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1.
上皮样血管内皮瘤(epithelioid hemangioendothelioma,EHE)是一种罕见的血管源性肿瘤。1982年首先由Weiss等报道,好发于四肢软组织、肺脏、骨、肝脏等器官。其中肝上皮样血管内皮瘤(hepatic epithelioid haemangioendothelioma,HEHE)更为少见,1984年Ishak等首次报道T32例HEHE。近年来对于该病的认识虽逐渐提高,但在临床上仍极易误诊、漏诊。本文报道了本院1例HEHE患者的诊治并对该病的临床、影像、病理学特征进行探讨。  相似文献   

2.
正上皮样血管内皮细胞瘤(epithelioid hemangioendothelioma,EHE)是临床罕见的血管源性肿瘤,其恶性度介于血管瘤及血管肉瘤间~([1])。由Weiss等~([2])于1982年首次命名,好发于肢端深部软组织及肺、骨、脑等。1984年Ishak等~([3])首先报道了肝上皮样血管内皮瘤(hepatic epithelioid hemangioendothelioma,  相似文献   

3.
<正>肝上皮样血管内皮细胞瘤(hepatic epithelioid hemangioendothelioma, HEHE)是一种较为少见的血管源性肿瘤,生物学行为具有恶性转移潜能[1]。HEHE起病隐匿,缺少特异性临床表现及实验室检查,易出现漏诊误诊。回顾性分析收治的3例HEHE患者临床资料,并结合文献探讨HEHE的诊断及治疗,为临床医师作出合理诊疗决策提供参考。1 病例资料病例1:患者男性,58岁,  相似文献   

4.
<正>上皮样血管内皮瘤(epithelioid hemangioendothelioma,EHE)是一种罕见的血管瘤,在所有血管瘤中比例小于1%,具有上皮样组织细胞外观,起源于血管内皮或前内皮细胞。最常发生于肝脏(21%),其次是肝和肺同时受累(18%),肺单独受累(12%),骨单独受累(14%)~([1])。也可发生于头颈部、乳腺、淋巴结、纵膈、脑、脑膜、脊柱、皮肤、腹部和其他组织。1975年由Dail和Liebow首次对一例肺EHE(P-EHE)进  相似文献   

5.
上皮样血管内皮瘤(epitthelioid hemangioendothelioma,EHE)是一种罕见的恶性血管肿瘤,胸膜上皮样血管内皮瘤(PEH)发病率更低,且临床症状和体征多不典型,极易误诊,现将我科收治的1例报道如下。  相似文献   

6.
<正>肝上皮样血管内皮瘤(eplthelioid hemangioendothelioma,EHE)是一种低度恶性源于血管的少见肿瘤。Weiss等[1]于1982年报道了41例发生于软组织的类似肿瘤,并命名为EHE。lshak等[2]于1984年报道过肝原发性EHE,临床症状和实验室检查无特异性,最终诊断需要结合病理检查。1病例资料患者男性,59岁,因"发现肝占位半个月"于2014年1月  相似文献   

7.
正肝脏上皮样血管内皮瘤(hepatic epithelioid hemangioendoth elioma,HEHE)是一种少见的间叶细胞来源的肿瘤,发病率约为0.1/10万~([1]),在1984年由Ishak等人最先报道。目前国内对该病患者行肝移植的报道相对较少~([2-3]),由于其临床症状和体征表现各异,治疗方案迄今未达成共识。我院器官移植研究所在2015年3月19日对1例肝上皮样血管内皮瘤患者成功实施了原位肝移植手术,现报道如下。  相似文献   

8.
张晓山  李晓辉 《山东医药》2010,50(35):53-53
肝脏上皮样血管内皮瘤(EHE)属一种罕见的低度恶性血管源性肿瘤,由Weiss和Enzinger 在1982年作为一种独立的肿瘤首先描述,为介于血管瘤和血管肉瘤间的一种间质源性肿瘤,具有上皮样细胞和血管内皮细胞的组织学特征.2010年4月我们采用CT诊断肝脏EHE 1例,现报告如下.  相似文献   

9.
肝脏上皮样血管内皮细胞瘤(epithelioid haemangioendothelioma,EHE)是一种罕见的生物学行为恶性的血管源性肿瘤,易漏诊或者误诊,主要依靠组织形态学和免疫组织化学确诊.以手术切除为主要治疗方法.我们报道1例肝EHE并结合相关文献进行分析.  相似文献   

10.
<正>肝上皮样血管内皮瘤(hepatic epithelioid haemangioen-dothelioma,HEHE)是一种罕见的以上皮样细胞为特征的血管内皮肿瘤,主要累及成年女性,大多数患者无特  相似文献   

11.
The immunoneuroendocrine role of melatonin   总被引:19,自引:0,他引:19  
Abstract: A tight, physiological link between the pineal gland and the immune system is emerging from a series of experimental studies. This link might reflect the evolutionary connection between self-recognition and reproduction. Pinealectomy or other experimental methods which inhibit melatonin synthesis and secretion induce a state of immunodepression which is counteracted by melatonin. In general, melatonin seems to have an immunoenhancing effect that is particularly apparent in immunodepressive states. The negative effect of acute stress or immunosuppressive pharmacological treatments on various immune parameters are counteracted by melatonin. It seems important to note that one of the main targets of melatonin is the thymus, i.e., the central organ of the immune system. The clinical use of melatonin as an immunotherapeutic agent seems promising in primary and secondary immunodeficiencies as well as in cancer immunotherapy. The immunoenhancing action of melatonin seems to be mediated by T-helper cell-derived opioid peptides as well as by lymphokines and, perhaps, by pituitary hormones. Melatonin-induced-immuno-opioids (MHO) and lymphokines imply the presence of specific binding sites or melatonin receptors on cells of the immune system. On the other hand, lymphokines such as -γ-interferon and interleukin-2 as well as thymic hormones can modulate the synthesis of melatonin in the pineal gland. The pineal gland might thus be viewed as the crux of a sophisticated immunoneuroendocrine network which functions as an unconscious, diffuse sensory organ.  相似文献   

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Abstract: The abundance of gap junctions between rat pineal astrocytes formed by connexin43 (Cx43) was studied during development. Levels and distribution of Cx43 were measured by immunoblotting and indirect immunofluorescence, respectively. The amount of Cx43 in cells located within the gland was low until about the 7th postnatal day and increased to adult values between the 14th and 21st days postpartum. Although astrocytes, recognized by their vimentin immunoreactivity, were scarce before birth, they were abundant by the 7th postnatal day suggesting that the low levels of Cx43 found at this age corresponded to a low expression of this protein. Localization of the immunoreactivity to Cx43 and vimentin showed a close correlation, indicating that mature or immature pineal astrocytes form gap junctions made of Cx43. Since Cx43 levels attained their adult values at about the time the innervation and the functional state of the gland reached maturity (2–3 weeks after birth), it is proposed that astrocyte gap junctions are involved in the function of the adult rat pineal gland.  相似文献   

14.
Abstract: Herein we documented the response of pineal melatonin production to electrolytes known to be effective on pineal function in view of a possible circadian stage dependence. We studied the release of melatonin by perifused rat pineal glands at 2 different circadian stages corresponding to the middle of the light and dark periods, i.e., respectively, 7 and 19 HALO (Hours After Light Onset, L:D = 12:12). The initial efflux rates were, as expected, much higher in the perifusates of glands removed from rats sacrificed during the dark phase than of those removed during the light phase. After 3 hr of perifusion, melatonin release reached similar levels which were found constant up to the 8th hr of perifusion, whatever the circadian stage. Perifusion of the glands with physiological concentrations for the rat of calcium (5.2 mmol/1) and magnesium (1.34 mmol/1) resulted in a stimulatory effect on the pineal glands removed from rats sacrificed in the middle of the dark period (19 HALO), whereas no effects were observed on the pineal glands removed from rats sacrificed during the light (7 HALO). Lithium (0.28 and 0.55 mmol/1) was ineffective on melatonin release in pineal glands removed 7 and 19 HALO. Our results show differences in the initial efflux rates of melatonin and in the response of perifused pineal glands to calcium and magnesium according to the circadian stage.  相似文献   

15.
Duodenal diverticula are a relatively common condition. They are asymptomatic, unless they become complicated, with perforation being the rarest but most severe complication. Surgical treatment is the most frequently performed approach. We report the case of a patient with a perforated duodenal diverticulum, which was diagnosed early and treated conservatively with antibiotics and percutaneous drainage of secondary retroperitoneal abscesses. We suggest this method could be an acceptable option for the management of similar cases, provided that the patient is in good general condition and without septic signs.  相似文献   

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Abstract: The use of antisera raised against bovine growth hormone (GH) and ovine prolactin (PRL) enabled the detection of related immunoreactive (ir) sequences of proteins in ovine pineal tissue. The isolation of PRL-like ir-material was accomplished using a 0.25 M ammonium sulphate (pH 5.5) extraction followed by ethanol precipitation, whereas the resulting 2.0 M ammonium sulphate (pH 7.0) precipitate contained a GH-like immunoreactivity. Gel chromatography of the GH-like immunoreactivity (Sephadex G-100) indicated the presence of several GH-like fragments ranging in the Mr range of 7,000 to 55,000. Analyses of the PRL-like ir-material found in pineal tissue on HPLC using a TSK 545-DEAE column led to the resolution into a single peak of immunoreactivity. A single peak of activity was also observed following chromatofocusing and hydrophobic interaction chromatography of the ir-peak from the TSK 545-DEAE column. The PRL-like ir-material inhibited the binding of [125I]ovine PRL-S14 to anti-ovine PRL antibodies without showing an affinity for binding to anti-rat PRL or anti-bovine GH antibodies. Scatchard analysis of the binding of pineal PRL-like ir-material and pituitary ovine PRL-S14 to liver membranes from day-20 pregnant rats revealed similar affinity constants (Ka of 4.7 ± 0.2 × 109 M-1). In addition, the replication of Nb 2 Node rat lymphoma cells was stimulated by pineal PRL-like ir-material, an effect known to be specific for lactogenic hormones. The pineal PRL-like immunoreactivity appeared on sodium dodecyl sulfate polyacrylamide gels as a single major band of Mr 24,000. The functional status of PRL-and GH-like ir-material in the ovine pineal remains to be determined, but evidence is presented that the overall protein synthesis rate of the rat pineal responded to circulating concentrations of PRL.  相似文献   

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PURPOSE: Individuals who are seropositive for the human immunodeficiency virus are at high risk for opportunistic infection and anorectal disorders. Little prospective information is available regarding anorectal pathogens in these patients. METHODS: One hundred sixty-three HIV-seropositive patients presented to the colorectal clinic between 1989 and 1992. Forty-seven (29 percent) patients were thought to have an infectious process and were prospectively studied using a standardized multiculture protocol. RESULTS: Mean age was 33 (range, 19–59) years. All were male; high-risk behavior accounted for 87 percent of HIV transmissions. Presenting complaints included anorectal pain (79 percent), pus per anum (28 percent), and blood per anum (26 percent). Examination revealed perianal tenderness (60 percent), condyloma (38 percent), perianal ulcers (38 percent), and anal fissures (34 percent). Sixty-six sets of cultures were performed; 28 patients had one set, 15 had two sets, and 4 had three sets. Thirty-two of these 47 patients (68 percent) had positive cultures including herpes (50 percent), cytomegalovirus (25 percent),Neisseria gonorrhoeae (16 percent), chlamydia (16 percent), acidfast bacilli (2 percent), and others (9 percent). Six of 32 patients with positive cultures had more than one organism cultured. Sixteen (50 percent) patients with positive cultures were treated medically, 8 (25 percent) were treated surgically and 8 (25 percent) were treated with both modalities. Sixty-one procedures were performed on 17 patients for condylomata. Eighteen patients had 20 procedures for abscesses, 50 percent of whom had positive cultures for other than common bowel flora; all improved. Fourteen patients underwent 33 procedures for perianal fistulas.Mycobacterium fortuitum was cultured from one patient who required 13 procedures for abscesses and fistulas. Forty-five (96 percent) patients were followed for an average of 12.5 months ±2.9 SEM (range, 1–94 months). Symptoms were improved or resolved in 22 of 32 (69 percent) patients with positive cultures and in 11 of 13 (84 percent) with negative cultures. CONCLUSIONS: Specific pathogens may often be identified in human immunodeficiency virus-seropositive patients with anorectal disorders if aggressively sought. Although patients without specific pathogens identified may be expected to improve with planned empiric treatment, positive identification allows more directed therapy.  相似文献   

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