首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
An early diagnosis and multidisciplinary team approach are mandatory in the management of eating disorders. Serious organic symptoms and nutritional effects can mimic a systemic illness, particularly in those with atypical presentations. A 15-y-old adolescent male presented with poor growth, low weight, abdominal pain and yellow pigmentation. Further bizarre multi-system symptomatology resulted in a protracted admission with multiple investigations. An initial diagnosis of teratoma proved negative on abdominal laparotomy. A multidisciplinary approach followed by a feeding challenge led to the diagnosis of an eating disorder. The disorder, although more common in girls and adolescents, is increasing in incidence in both males and younger children. Conclusion: Atypical eating disorders are potentially serious and life-threatening illnesses, and paediatricians and psychologists should be aware of unusual presentations.  相似文献   

2.
OBJECTIVES: To describe the frequency and range of pancreatic disorders in children requiring surgical intervention and to highlight the importance of multidisciplinary management. METHODS: An audit of all children under 17 years of age referred with surgical disorders of the pancreas or pancreatitis to a regional pediatric gastroenterology unit in the United Kingdom during a 10-year period. A retrospective chart review of clinical features, pathology and outcome was undertaken. RESULTS: Surgical intervention was required for the following pancreatic disorders: persistent hyperinsulinemic hypoglycemia of infancy (n = 4), pancreatic tumors (n = 5), pancreaticobiliary malunion (n = 12), pancreatic trauma (n = 6) and pancreatitis (n = 10). The indications for surgery in acute pancreatitis were a persistent pseudocyst (n = 1) and treatment of an underlying cause of pancreatitis (n = 4); in chronic pancreatitis, surgery was used to treat symptomatic pancreatic duct strictures (n = 4). One child died of a progressive lymphoma but all others who underwent surgery are alive and well. All 33 children with acute pancreatitis, including four with pancreatic necrosis, survived. CONCLUSIONS: Surgery for pancreatic disorders in children is rarely required but may be necessary a) for definitive management of primary pancreatic pathology, b) to treat sequelae of acute or chronic pancreatitis and c) to treat an underlying cause of pancreatitis. There is a broad spectrum of potential pathologies. These patients are best managed by a multidisciplinary team approach.  相似文献   

3.
BACKGROUND: Gastroesophageal reflux disease (GERD) symptoms are very common in children with major presenting symptoms of abdominal pain, heartburn and regurgitation. The presence of GERD symptoms often result in an impaired health-related quality of life for both the patients and their parents. Evaluation of children with GERD symptoms continues to challenge physicians due to the lack of a validated measure for GERD symptoms. AIMS: To develop and test a multidimensional measure for GERD symptoms in children and to evaluate the responses of the measure among children attending pediatric gastroenterology (GI) clinics. METHODS: We conducted a cross-sectional study that enrolled children with GERD symptoms from pediatric GI clinic. All children and parents received a standardized questionnaire concerning socio-economic parameters, GERD symptoms, duration, frequency, intensity and missed activities due to GERD symptoms. Each child and parent pair was interviewed by a physician to complete baseline information for the multidimensional measure that consisted of four scales: symptoms scale (10 items), pain intensity scale (3 items); disability scale (3 items) and satisfaction scale (2 items). RESULTS: One hundred and thirty-three children participated in the study; 59% girls, ages 4 to 18 years, mean age = 10 +/- 3, 50%, 10 years and younger. There was an excellent correlation between the four-scales measure among children 7 years and younger (R = 0.70, p = 0.0001) and children >7 years (R = 0.74, p = 0.0001). The inter-item consistency (Cronbach's co-efficient alpha) for the symptoms items, pain intensity items, disability items and satisfaction items were 0.71, 0.74, 0.78 and 0.60, respectively, demonstrating adequate reliability of the measure. CONCLUSION: Children with GERD symptoms have good responses to the multidimensional measure for GERD symptoms, showing that the measure performed well across populations. The measure is reliable and specific for assessing the symptoms of GERD in children and is an appropriate outcomes measure for clinical trials involving GERD symptoms in children.  相似文献   

4.
PURPOSE: Noonan's syndrome is a common dysmorphic syndrome in which failure to thrive and gastrointestinal symptoms are frequent but poorly understood. DESIGN: Twenty five children with Noonan's syndrome were investigated by contrast radiology, pH monitoring, surface electrogastrography (EGG), and antroduodenal manometry (ADM). RESULTS: Sixteen had poor feeding and symptoms of gastrointestinal dysfunction. All 16 required tube feeding. Seven of 25 had symptoms of foregut dysmotility and gastro-oesophageal reflux. In the most symptomatic children (four of seven) EGG showed fasting frequency gradient loss along the stomach fundus and pylorus with antral postprandial frequency loss. ADM showed shortened fasting cycle length, with abnormal phase III and shortened postprandial activity containing phasic contractions. IMPLICATIONS: Gastroduodenal motor activity was reminiscent of 32-35 week preterm patterns. The feeding difficulties appear to resolve as gut motility matures. In Noonan's syndrome, feeding problems appear to be the result of delayed gastrointestinal motor development.  相似文献   

5.
Chronic intestinal pseudo-obstruction describes a heterogeneous group of disorders characterized by signs and symptoms of intestinal obstruction in the absence of a mechanical lesion. We studied antroduodenal motility in 13 children with pseudo-obstruction. The diagnosis was based on radiographic evidence in all, surgery in 11, and specific pathologic features in four. Antroduodenal motility was abnormal in all 13. Qualitative abnormalities in the patterns of antroduodenal contractions permitted separation into groups: (1) postprandial hypomotility (n = 3), (2) absent migrating motor complexes, with phase 3-like activity at the start of meals (neuropathic variety) (n = 5) (3) very low amplitude or absent contractions (myopathic variety) (n = 2); the remaining patients (n = 3) had other distinctive abnormalities. Cisapride, a new gastrointestinal prokinetic drug, stimulated proximal duodenal contractions in the 30 minutes after a meal in nine of 10 patients tested. These studies indicate that antroduodenal manometry is useful for characterizing intestinal pseudo-obstruction, and cisapride stimulates postprandial duodenal contractions in patients with pseudo-obstruction.  相似文献   

6.
Background: The purpose of the present paper was to assess efficiency of treatment and long-term functional outcome of complex regional pain syndromes (CRPS) in children who were treated in the chronic pain clinic at a major tertiary hospital in Israel.
Methods: The files of 14 children with CRPS were analyzed retrospectively. Demographic data, initiating event, referring source, time needed for referral to pain clinic, clinical evaluation, treatment, recurrence and complications were recorded.
Results: Fourteen children with CRPS types I and II were included in the study. Girls were affected in 71%. Lower extremities were affected in 57%. The median time from onset of symptoms to seeking medical help was 4.46 weeks (range 2–82 weeks). The median time to referral to pain clinic was 24.51 weeks (range 1.2–94). In 45% the referral source was the pediatrician. A total of 85.8% of patients were referred to various consultations before the pain clinic. Most children had reduced pain and improved function on non-invasive treatment approach. Invasive treatments were used in 28.5%. Full or partial recovery was accomplished in 93%. Recurrence was observed in 29%.
Conclusions: CRPS in children and adolescents is still underdiagnosed, although many of the epidemiologic features of pediatric CRPS are similar in different countries/cultures. Early recognition and management is the major factor in improving outcome and preventing resistant CRPS, but even children with delayed diagnosis still have a good outcome. The management of this disease by an experienced multidisciplinary team is recommended. Because psychosocial factors play an important role, it is recommended to provide psychological evaluation and cognitive behavioral treatment as soon as possible.  相似文献   

7.
We examined the usability of smartphones for accessing a web-based e-Diary for self-monitoring symptoms in children and adolescents with sickle cell disease (SCD). One group of participants (n = 10; mean age, 13.1 ± 2.4 y; 5 M; 5 F) responded to questions using precompleted paper-based measures. A second group (n = 21; mean age, 13.4 ± 2.4 y; 10 M; 11 F) responded based on pain and symptoms they experienced over the previous 12 hours. The e-Diary was completed with at least 80% accuracy when compared to paper-based measures. Symptoms experienced over the previous 12 hours included feeling tired (33.3%), headache (28.6%), coughing (23.8%), lack of energy/fatigue (19.0%), yellowing of the eyes (19.0%), pallor (19.0%), irritability (19.0%), stiffness in joints (19.0%), general weakness (14.3%), and pain (14.3%), rating on average as 2.0 ± 1.7 (on 0 to 10 scale). Overall, sleep was good (8.1 ± 1.4 on the 0 to 10 scale). In conclusion, children with SCD were able to use smartphones to access a web-based e-Diary for reporting pain and symptoms. Smartphones may improve self-reporting of symptoms and communication between patients and their health care providers, who may consequently be able to improve pain and symptom management in children and adolescents with SCD in a timely manner.  相似文献   

8.
目的 了解丙氨酰-谷氨酰胺强化营养支持对于腹型过敏性紫癜患儿的临床有效性。方法 将需要营养支持的腹型过敏性紫癜患儿依据年龄、性别、病情进行分层,随机分为对照组(n=118)和强化营养组(n=107)。对照组未使用丙氨酰-谷氨酰胺,强化营养组使用丙氨酰-谷氨酰胺,根据病情给予静脉激素,其余治疗相同。比较两组患儿住院总时间、静脉激素使用率和时间、住院期间症状有无反复、全静脉营养使用率、体重降低发生率、禁食 > 5 d比例;并在出院后随访3个月,了解症状有无复发。结果 两组住院总时间、全静脉营养使用率、禁食 > 5 d比例比较差异无统计学意义(P > 0.05);对照组静脉激素的使用比例和时间、症状反复、体重下降比例均高于强化营养组(P < 0.05)。出院后随访3个月,所有患儿均恢复了正常饮食,两组消化道症状复发率均小于20%,主要以腹痛为主要表现(83.33%,30/36),其次为呕吐和腹胀,无消化道出血表现,予以对症治疗可缓解,两组间消化道症状复发率比较差异无统计学意义(P=0.693)。结论 丙氨酰-谷氨酰胺强化营养支持治疗腹型过敏性紫癜患儿能够减少静脉激素的使用,降低体重的下降,但是对住院总时间和出院后复发无影响。  相似文献   

9.
OBJECTIVES: The aims of this study were to determine the electrogastrographic patterns in children with functional dyspepsia and to investigate the correlations among electrogastrogram (EGG), gastric emptying (GE), and pain severity. METHODS: We studied 30 children (19 F; mean age 11.4 years) with functional dyspepsia. Electrogastrography was performed for 30 minutes fasting and for 1 hour during a GE test after ingestion of an isotope-labeled solid meal. The percent emptying was measured every 10 minutes for 1 hour after the meal. The dominant frequency of the EGG, the change in the postprandial peak power (deltaP), and percent dysrhythmia during each recording session were calculated. Specific symptoms were graded from 0 (none) to 4 (severe) by the patient. RESULTS: Of 30 patients, 14 (47%) had slow GE, and 15 (50%) had abnormal EGG (dysrhythmia > or = 30% or deltaP < 0). GE was slow in 73% of patients with an abnormal EGG but was slow in only 20% of patients with normal EGG (P = 0.009). GE was negatively correlated with fasting bradygastria (r = -0.383, P = 0.04). Abdominal pain was the most severe dyspeptic symptom, both during fasting and after the meal. Patients with an abnormal EGG had an increased mean pain severity score (3.5 +/- 0.2 vs. 2.5 +/- 0.2, P = 0.002). CONCLUSIONS: Sixty percent of functional dyspepsia subjects had either slow GE or abnormal EGG. Patients with abnormal EGG were more likely to have slow GE. EGG abnormalities were associated with more severe postprandial pain and should be considered a possible mechanism for dyspeptic symptoms.  相似文献   

10.
目的:探讨儿童慢性肠系膜缺血的临床特点及诊治方法,提高儿科医生对本病的诊疗水平。方法:回顾性分析首都医科大学附属北京儿童医院收治的1例12岁因慢性肠系膜缺血所致的急性肠坏死女性患儿,体重14 kg,身高115 cm,曾有6年餐后腹痛病史,以持续性腹痛3 d,伴呕吐入院。入院诊断为急性消化道穿孔。急诊行开腹探查,术中见空...  相似文献   

11.
BACKGROUND: Percutaneous or surgical insertion of gastrostomy tubes for feeding children has been well described. However, there is no report of percutaneous gastrostomy for chronic decompression in children with chronic gastrointestinal obstruction. The objective of this study was to evaluate this technique. METHODS: Eighteen gastrostomies were performed for gastrointestinal decompression in children. The patients ranged in age from 2 to 125 months (median: 15.5), and all had prolonged hospital stays for severe disease: severe gastroparesis and/or duodenal dysmotility (n = 8), duodenal stenosis (n = 2), chronic intestinal pseudo-obstruction (n = 4), enterocolitis (n = 2), and metastatic abdominal carcinomatosis (n = 2). The duration of symptoms before gastrostomy placement ranged from 0.5 to 44 months (median: 2), with major symptoms including epigastric pain, early satiety, nausea, vomiting, and bloating. RESULTS: The goals of gastric decompression and removal of the nasogastric tube were achieved in all patients, and all had significant relief of both nausea and emesis. Oral intake of liquids and soft foods was possible in 17 of 18 of the children. The tubes were kept in place for a median of 22.5 months (range, 2-73). There was neither long-term morbidity nor mortality associated with the presence of the tube. Seventeen patients returned home with gastric decompression and cyclic parenteral nutrition, two of them for terminal care. Six patients died. In all patients, gastrostomy was used throughout and did not contribute to the death of the patients. For seven children, tubes were removed because of resolution of small bowel or gastric outlet obstruction. CONCLUSIONS: Gastrostomy is an efficient and well-tolerated method of achieving long-term gastric decompression in children with abdominal obstruction not amenable to surgery and/ or resistant to medical treatment.  相似文献   

12.
A clinical profile and the course and outcome with therapy of 126 infants and children with gastroesophageal reflux (GER), diagnosed at a median age of 2.5 months and followed for 1.5 to 3.5 years is presented. Features included repeated regurgitation or rumination (99%), signs suggesting esophageal pain (49%, excessive crying "colic," sleep disturbance, Sutcliffe-Sandifer syndrome, respiratory symptoms 42%), failure to thrive (18%), and minor hematemesis (18%). Feeding problems and maternal distress were common, associated with child abuse in four cases. Therapy was initially conservative (posture, thickening of feeds, antacids, bethanechol), augmented by cimetidine in those with proven esophagitis (n = 34, 0.27%). Most (81%) were symptom-free by 18 months of age (55% by 10 months of age); 17 percent had fundoplication with good results; 2 percent have persisting symptoms beyond 2 years of age (1% failed surgery). No deaths were recorded. Surgery was performed for recurrent apneas/aspiration (6%), refractory esophagitis or stricture (5%), and failed medical management (7%). Esophagitis was a significant determinant to outcome, and the importance of selective early endoscopy is emphasized. GER is a cause of considerable morbidity in infants but, with active therapy, is self-limiting in the majority. Certain distinctive clinical signs indicate those patients who require detailed investigation and to whom more aggressive therapeutic efforts should be directed.  相似文献   

13.
AIM: The aim of this study was to investigate the prevalence of pain and characteristics of pain (frequency, duration, intensity) among children and adolescents and to compare them across different age and gender groups. METHODS: 735 children and adolescents aged 10-18 y from schools in the Luebeck region of Germany were surveyed using a modified German version of the self-completion pain questionnaire of Perquin and co-workers. RESULTS: 715 out of 735 questionnaires (97.3%) were returned completed. Pain during the preceding 3 mo was reported by 85.3% (n = 610) of the respondent children and adolescents. The prevalence of pain increased with age. The most common complaints were headache (65.6%), abdominal pain (47.7%), limb pain (46.4%) and back pain (38.6%). A pain duration of longer than 3 mo was reported by 45.5% (35.4% for longer than 6 mo). Pain once a week or more frequently was reported by 33.7% of children and adolescents. CONCLUSION: Almost half of the surveyed children and adolescents had suffered complaints for longer than 3 mo. The experience of pain in general and especially pain with a duration of longer than 3 mo is very common in children and adolescents, and requires further attention. Further studies are necessary to investigate the natural course, functional implications and prognosis due to pain complaints in children and adolescents.  相似文献   

14.
Cardiac abnormalities in children with systemic lupus erythematosus   总被引:2,自引:0,他引:2  
Children and adolescents with systemic lupus erythematosus (SLE, n = 14) with no cardiac symptoms were examined for cardiac involvement by physical examination, electrocardiography (ECG) and echocardiography. The indexes of left ventricular (LV) systolic and diastolic function were compared with the findings of 20 healthy, age-matched control subjects. Echocardiographic examination revealed mild tricuspid valve regurgitation in three, and moderate tricuspid and mitral valve regurgitation in two patients. Pericardial thickening was found in one patient. Indexes of LV systolic and diastolic function of SLE patients differed significantly from control subjects, with marked reduced ejection fraction (EF) and fractional shortening (FS) as well as reduced peak early diastolic filling velocity (E) and ratio of early-to-late diastolic filling velocity (E/A). Deceleration time (DT) was longer in the patients than in the control group. Late filling velocity (A) and isovolumic relaxation time (IRT) did not differ between the two groups. Valvular and pericardial involvement was found to be lower than previous reports. We conclude that asymptomatic diastolic and systolic dysfunction is common in children with SLE, most likely representing myocardial involvement. Routine cardiac evaluation by echocardiography can be recommended in the follow-up of children with SLE in order to detect silent cardiac abnormalities.  相似文献   

15.
OBJECTIVE: To retrospectively review our institutional experience of adolescents with idiopathic thrombocytopenic purpura (ITP). STUDY DESIGN: Medical record review of all patients diagnosed with ITP between the ages of 10 and 18 years seen at our center from January 1976 to March 2000. RESULTS: Data were collected from 126 patients. Of the evaluable 110 cases, 63 (57%) satisfied the criteria for chronic ITP, 30 (27%) for acute ITP, and 17 (15%) were uncertain. Sex distribution and mean ages were similar in all 3 groups. Platelet count at presentation was higher in patients with chronic ITP. Splenectomy was performed in 24 patients, with 17 (77%) of 22 having normal platelet counts at last follow-up. Outcome for the nonsplenectomized patients with chronic ITP included normalization of platelet count (n = 4), minimal or no bleeding without treatment (n = 29), treatment for ongoing symptoms (n = 5), and unknown (n = 1). Two patients died, 1 from intracranial hemorrhage and 1 from Escherichia coli sepsis and pulmonary hemorrhage. CONCLUSIONS: Patients 10 to 18 years of age with ITP are more likely than younger children to have chronic disease. Many patients with ITP recover without drug therapy or need for splenectomy. ITP in adolescents shares features of both childhood and adult ITP.  相似文献   

16.
An age-appropriate questionnaire (GASP-Q) was used to assess the frequency and severity of the gastroesophageal reflux disease (GERD) symptoms: abdominal/belly pain, chest pain/heartburn, pain after eating, nausea, burping/belching, vomiting/regurgitation, choking when eating, and difficulty swallowing, in adolescents age 12 to 16 years. The primary objective was to compare the mean composite symptom score (CSS) at week 8 with baseline after treatment with 20 or 40 mg of pantoprazole. Statistically significant (p < 0.001) improvement in CSS occurred in both groups. Safety was comparable between the 2 groups. Pantoprazole was safe, well tolerated, and effective in reducing symptoms of GERD in adolescents.  相似文献   

17.
BACKGROUND: It has recently been shown that obese adults have a disturbed metabolism of postprandial lipoproteins, resulting in postprandial hypertriglyceridemia. To the best of our knowledge, there are no data about postprandial triglyceridemia in obese and non-obese children and adolescents. SUBJECTS: 12 obese and 12 non-obese adolescents, aged 11.0 to 13.8 years. METHODS: Body composition and fat distribution (waist-to-hip circumference ratio and triceps/ subscapular skinfold thickness ratio) were assessed by anthropometry. An oral fat tolerance test was carried out, and fasting and postprandial lipid-lipoprotein serum concentrations were measured. RESULTS: We observed a significant increase in triglyceride serum concentrations 2 and 4 hours after the oral fat load, in both obese and non-obese adolescents. In obese and non-obese adolescents there were significant correlations between some variables of postprandial lipemia and the studied indices of body fat distribution. When we compare postprandial lipemia in adolescents having a central pattern of fat distribution with those having a peripheral pattern of fat distribution, we observed higher variables related to postprandial lipemia in those having a central pattern of fat distribution compared with those with a peripheral pattern (sum of serum triglyceride concentrations: 6.06 vs 4.41, p = 0.0243). CONCLUSIONS: We present a protocol to study postprandial lipemia in children and adolescents that allowed us to observe significant changes after an oral fat load. Results obtained indicate that the pattern of distribution of adipose tissue may be more important for lipid metabolism disturbances than total adipose tissue per se.  相似文献   

18.
Failure-to-thrive (FTT) is a chronic symptom accounting for 1% of all patients admitted to pediatric hospitals. FTT, which is traditionally attributed to organic (OFTT) and/or nonorganic (NFTT) causes, results in undernutrition. Undernutrition has potentially serious effects on child development, behavior, and cognitive skills. We undertook a study of children with FTT to determine whether multidisciplinary team treatment resulted in improved weight gain compared with children treated in a primary care setting. Fifty-three children with NFTT referred to our outpatient FTT consultative clinic and 107 children with NFTT identified as comparison subjects from our primary care clinic (PCC) were enrolled in the study. Growth outcomes over a 6-month follow-up were analyzed using growth quotient (GQ) analysis. Children followed in the multidisciplinary team clinic grew better (GQ = 1.75 +/- 0.39 SD) than did children in the PCC (GQ = 1.18 +/- 0.42 SD, p less than .001). The use of a multidisciplinary team offers special advantages in the rapid correction of undernutrition in children with NFTT.  相似文献   

19.
BACKGROUND: In adults there is evidence that the affective-cognitive processes of rumination and overgeneral autobiographical memory retrieval may play a part in maintaining depression. This study investigated the effects of induced rumination as compared to distraction on mood and categoric overgeneral memory in adolescents with first episode Major Depressive Disorder (MDD), and the specificity of any effects to MDD. METHOD: Three subject groups; adolescents with first episode MDD (N = 75), non-depressed psychiatric participants (N = 26) and community controls (N = 33) were recruited. An experimental design was used, with repeated measures of 'in the moment' depressed mood and categoric overgeneral memory before and after rumination and distraction, induced on separate occasions and counterbalanced in order across participants. RESULTS: In adolescents with MDD, induced rumination as compared to distraction differentially increased depressed mood. There were no significant differences in this effect between full current MDD participants and those in partial remission. This differential effect was also seen in community controls but was absent in non-MDD psychiatric participants. In addition, rumination as compared to distraction increased overgeneral memories to negative cues in MDD participants, but this increase was not significantly related to mood change, and was specific to MDD, being absent in non-MDD psychiatric and community control groups. CONCLUSIONS: Experimentally induced rumination as compared to distraction increases depressed mood and negative categoric memories in adolescents with first episode MDD. These results suggest that rumination has a deleterious effect on mood and memory retrieval processes in adolescents with first episode MDD. Increased negative overgeneral memories with rumination may be a process of particular importance for adolescents with MDD rather than psychiatric disorder in general. The findings imply that strategies to interrupt ruminative processes may be helpful in minimising persistence of first episode MDD in adolescence.  相似文献   

20.
We described the clinical presentations, radiological findings, urodynamic patterns and endoscopic management in a series of patients with symptomatic lacuna magna (LM). The medical records of 14 boys diagnosed as LM were reviewed, retrospectively. The presence of LM was first diagnosed based on clinical history, physical exam, and radiological findings; then confirmed by urethroscopy. Urodynamic study was performed in 10 boys before and after the procedure. Transurethral incision and fulguration of the valve was performed in all patients. The mean (range) age of patients was 3.1 years (6 months to 8 years). The boys presented with dysuria (n = 9), postvoid dribbling (n = 4), hematuria (n = 3), bloody spotting (n = 3), enuresis (n = 4), and glanular irritation and pain (n = 6). The post-operative period was uneventful in all patients. The symptoms were relieved and repeat radiological exam showed complete resolution of LM in all children by the 3rd post-surgical month. Before the procedure, main urodynamic abnormalities in children were high P(detmax) and detrusor instability that significantly improved within 3-6 months after treatment. Despite evidence suggesting that a LM is a frequent, normal anatomical variant, the valve may cause symptoms such as intermittent hematuria, dysuria, and bloody spotting of underwear. The lesion may be associated with obstructive urodynamic patterns in some children. Endoscopic treatment of patients effectively relieves the symptoms and corrects the urodynamic abnormalities.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号