Coexistent dermoid cysts of the pouch of the Douglas and ovary resected by laparoscopy

Dermoid cysts of the ovary are one of the most common ovarian neoplasms, but parasitic dermoid cysts as well as coexistent dermoid cysts are unusual. Almost all reports of coexistent dermoid cysts involve the omentum and ovary, but our case involved the pouch of Douglas and ovary. We managed this case by laparoscopy.     

Ruptured intracranial dermoid: an unusual cause of headache in an older patient

A 76-year-old woman with a history of migraine presented with worsening headache. Computerized tomography brain scan and magnetic resonance imaging brain scan showed the presence of fat globules in the cerebrospinal fluid space. This appearance was suggestive of ruptured intracranial dermoid. She recovered spontaneously. While headache is a known presentation of ruptured intracranial dermoid, the condition is unusual to present in older people.     

A case of dermoid cyst of the floor of the mouth: ultrasonography was more useful than computed tomography and magnetic resonance imaging in the preoperative diagnosis

Dermoid cysts are rare in the floor of the mouth. This report presents a case of dermoid cyst (dermoid type) of the floor of the mouth in a 21-year-old man. The preliminary preoperative assessment was made by using three modalities: computed tomography (CT), magnetic resonance imaging (MRI), and ultrasonography (US). CT depicted the lesion as a well-circumscribed, unilocular, homogeneous low-density mass. MRI showed a mass lesion located in the submental region between the geniohyoid and mylohyoid muscles. The lesion exhibited homogeneous intermediate signal intensity on T1-weighted images and homogeneous high signal intensity on T2-weighted images. The wall of the lesion was well enhanced on gadolinium-enhanced MRI. CT and MRI could not demonstrate any fatty components within the lesion and only indicated that the lesion was cystic in nature. In contrast, on US, multiple echogenic foci that seemed to be caused by keratin and sebaceous material were detected within the lesion, and this US finding was useful information for the differential diagnosis. In this case, of the three modalities, only US suggested that the lesion might be a dermoid cyst.     

椎管内上皮样囊肿和皮样囊肿的MRI诊断(附16例报告)

笔者报告了16例经手术病理证实的椎管内上皮样囊肿（9例）和皮样囊肿（7例）的MRI表现。讨论了上皮样囊肿和皮样囊肿的MRI诊断和鉴别诊断。     

Presacral dermoid cyst in a young female patient: A case report

Presacral dermoid cysts are rare, benign tumors of developmental origin that primarily affect women. Surgical resection is the mainstay of treatment for these cysts, even if asymptomatic, with the laparoscopic approach being safer and more efficient.     

Asymptomatic traumatic rupture of an intracranial dermoid cyst: A case report

BACKGROUNDPrevious studies reported that most of the intracranial dermoid cyst ruptures were spontaneous, and only a few were traumatic, with asymptomatic much rarer than the symptomatic ruptures. Hence, how to deal with the asymptomatic traumatic rupture of intracranial dermoid cyst remains a challenge in the clinic.CASE SUMMARYA 59-year-old man was accidentally diagnosed with intracranial dermoid cyst through a cranial computed tomography (CT) scan due to a car accident. A mixed-density lesion with fat and a calcified margin was observed in the midline of the posterior fossa, accompanied with lipid droplet drifts in brain sulci, fissures, cisterns, and ventricles. After 1 wk of conservative observation, no change was observed on the updated cranial CT scan. After 2 wk of conservative observation, magnetic resonance imaging examination confirmed that the lesion was a traumatic rupture of a posterior fossa dermoid cyst with lipid droplet drifts. As the patient exhibited no adverse symptoms throughout the 2 wk, a 6-mo follow-up visit was arranged for him instead of aggressive treatment. Nonetheless, the patient did not show any abnormal neurological symptoms in the 6 mo of follow-up visits.CONCLUSIONAsymptomatic traumatic rupture of intracranial dermoid cyst could be just followed or treated conservatively rather than treated aggressively.     

Congenital cranial and spinal dermal sinuses: A report of 3 cases

Three cases of congenital dermal sinus are presented—2 female and 1 male. Frontal, thoracic, and lumbosacral congenital dermal sinuses were explored. All patients presented with skin findings, but no neurologic deficits. The case with frontal localization was associated with a corpus callosum lipoma and dermoid tumor, and the patient presented with recurrent meningitis. The case with sacral localization was associated with an epidermoid tumor. Morphogenetic, clinical, and radiologic aspects of these cases are discussed. The midline should be carefully examined whenever a child suffers from meningitis. Dermal sinus tracts should be excised prophylactically.     

颅内皮样囊肿破裂的MRI诊断

目的探讨MRI对颅内皮样囊肿破裂的诊断价值。方法收集经手术病理证实的颅内皮样囊肿破裂7例,回顾性分析MRI特征。结果7例皮样囊肿均为单发,位于前颅窝底4例,鞍上池2例,中颅窝底部1例。病变在MRI上呈信号不均的表性病灶,其内均可见短T1脂肪信号,其中1例可见脂一液平面,邻近脑沟均可见短T1信号脂滴,脂肪抑制序列短T1信号均可被抑制;增强扫描2例出现脑膜强化,其中1例并室管膜强化。结论颅内皮样囊肿破裂MRI表现具有特征性,脂肪抑制序列具有重要价值,皮样囊肿破裂可引起化学性脑膜炎或室管膜炎。     

Ultrasound Evaluation of Dermal Sinuses/Fistulas in Pediatric Patients

A dermal sinus/fistula is a common condition; the relevant department should be consulted for appropriate treatment. It is important for radiologists to have adequate knowledge of these conditions to provide the correct diagnosis and recommend subsequent management. This review describes the following lesions: preauricular sinus, midline sinus of the upper lip, nasal dermoid sinus cyst, cheek fistula, first branchial cleft anomaly/sublingual branchial cleft anomaly, thyroglossal duct cyst/fistula, lateral cervical sinus/fistula, congenital dermal sinus/fistula of the anterior chest region, congenital skin sinus/fistula with a sternal cleft, and congenital prepubic sinus. On the basis of the skin orifice location and ultrasound images, radiologists can provide useful information to physicians.     

Radial artery cannulation: A comparison of 15.2- and 4.45-cm catheters

Eighty-nine patients were studied prospectively to compare the incidence of postdecannulation arterial thrombosis and ischemic complications associated with percutaneous insertion of two different radial artery catheters. Patients scheduled for peripheral vascular surgery were randomized to receive a 15.2-cm (6 in, Argon Medical Corp.) or 4.45-cm (1.75 in, Arrow International, Inc.) 20-gauge, Teflon catheter. Extremity blood flow was evaluated prior to cannulation and again after decannulation with the modified Allen's test, pulse-volume plethysmography, and Doppler ultrasound. The incidence of postdecannulation radial artery occlusion for 15.2-cm catheters was significantly less than for 4.45-cm catheters (4 of 45 cases versus 11 of 44 cases,p=0.05). No case of temporary or permanent ischemic injury occurred. Radial artery transfixion (16 of 45 cases versus 5 of 44 cases,p=0.01) and hematoma formation (5 of 45 cases versus 0 of 44 cases,p=0.02) occurred more frequently during insertion of 15.2-cm catheters than 4.45-cm catheters. The number of arterial punctures during catheter insertion and the duration of cannulation were similar for both groups. Of the 8 patients with positive modified Allen's test who underwent radial artery cannulation, one suffered arterial occlusion. Radial artery cannulation with a 15.2-cm catheter was associated with a lower incidence of postdecannulation radial artery thrombosis than cannulation with the 4.45-cm catheter. Radial artery cannulation with longer catheters (>5.0 cm) appears to be a safe practice.     

Radial artery cannulation: A comparison of 15.2- and 4.45-cm catheters

Eighty-nine patients were studied prospectively to compare the incidence of postdecannulation arterial thrombosis and ischemic complications associated with percutaneous insertion of two different radial artery catheters. Patients scheduled for peripheral vascular surgery were randomized to receive a 15.2-cm (6 in, Argon Medical Corp.) or 4.45-cm (1.75 in, Arrow International, Inc.) 20-gauge, Teflon catheter. Extremity blood flow was evaluated prior to cannulation and again after decannulation with the modified Allen's test, pulse-volume plethysmography, and Doppler ultrasound. The incidence of postdecannulation radial artery occlusion for 15.2-cm catheters was significantly less than for 4.45-cm catheters (4 of 45 cases versus 11 of 44 cases,p=0.05). No case of temporary or permanent ischemic injury occurred. Radial artery transfixion (16 of 45 cases versus 5 of 44 cases,p=0.01) and hematoma formation (5 of 45 cases versus 0 of 44 cases,p=0.02) occurred more frequently during insertion of 15.2-cm catheters than 4.45-cm catheters. The number of arterial punctures during catheter insertion and the duration of cannulation were similar for both groups. Of the 8 patients with positive modified Allen's test who underwent radial artery cannulation, one suffered arterial occlusion. Radial artery cannulation with a 15.2-cm catheter was associated with a lower incidence of postdecannulation radial artery thrombosis than cannulation with the 4.45-cm catheter. Radial artery cannulation with longer catheters (>5.0 cm) appears to be a safe practice.     

A case of ovarian dermoid cyst with malignant transformation perforated into the rectosigmoid colon and small intestine

A 72-year-old female was admitted to hospital with diarrhea containing hair. The abdominal plain film showed teeth-like structures in the right lower quadrant. Barium enema and endoscopic examination were performed, and the results indicated a possible dermoid cyst perforated into the rectosigmoid colon and small intestine. The operation revealed a dermoid cyst of the right ovary perforated into the rectosigmoid colon and small intestine. Histopathologically, a dermoid cyst and in part well-differentiated squamous cell carcinoma invading the rectosigmoid and small intestine were demonstrated.     

Is vaginal dermoid cyst a rare occurrence or a misnomer? A case report and review of the literature.

Vaginal dermoid cyst is a rare finding. Preoperative diagnosis of this lesion is difficult as the sonographic features are similar to those of an epidermal inclusion cyst. We report a case of vaginal dermoid cyst and present its sonographic characteristics.     

Sonographic and clinical characteristics of struma ovarii.

Our objective was to evaluate the preoperative clinical, laboratory, and sonographic characteristics of struma ovarii in comparison to ovarian dermoid cysts. A retrospective review of gynecologic patients operated on for mature cystic teratoma over a 10 year period identified 12 cases of struma ovarii. These cases, combined with 4 additional cases from an earlier report, were the subject of this study. Results were compared to 32 cases of ovarian dermoid cysts. Ovarian struma ovarii occurred in 12 (4.8%) of 251 cases of ovarian dermoid cysts. Most patients were premenopausal, and the mean lesion diameter was 57.3 mm (range, 30-95 mm). Struma ovarii occurred more frequently (68.8%) in the right adnexa and was seen with a normal CA-125 level. Blood flow, assessed by Doppler ultrasonography, was located in the center of the lesion in all cases of struma ovarii. Rare cases were seen with elevated tumor markers and low resistance blood flow. With regard to dermoid cysts, blood flow had a higher resistive index. In addition, no blood flow could be detected from the center of the echoic lesion in dermoid cysts (P < 0.0001). In summary, it is difficult to distinguish between struma ovarii and dermoid cysts on the basis of their sonographic appearance. Nevertheless, Doppler flow may aid in the preoperative diagnosis of struma ovarii. Blood flow signals, detected from the center of the echoic lesion, and low resistance to flow may be more common in struma ovarii.     

Limbic dermoid in a New Zealand White rabbit (Oryctolagus cuniculus).

Superficial keratectomy was performed in a New Zealand White rabbit for a suspected limbic dermoid. Histology confirmed the diagnosis. Ocular dermoids have been reported in a variety of laboratory animals. This is the first report of a corneal dermoid in rabbits.     

颌面骨缝皮样囊肿的临床分析

目的探讨颌面骨缝皮样囊肿的病理特征、临床表现、诊断要点及治疗措施.方法回顾分析了10例颌面骨缝皮样囊肿患者的临床资料,对手术方法,切除范围及手术疗效进行分析.结果无手术并发症,术后随访2～8年,治愈率90%.5例术前CT扫描,2例MRI提示与病理诊断相符.结论颌面骨缝皮样囊肿临床表现、影像学有一定特征,手术是目前唯一有效的治疗手段.     

Choledochal cyst in adults

Choledochal cysts are being recognized with an increasing frequency among the adult population. In this series a correct preoperative diagnosis was established in eight of the ten patients. The clinical triad of obstructive jaundice, right upper abdominal pain, and a palpable flactuant mass was noted in only two cases but at least one of these symptoms was present in all patients. Acute pancreatitis, cholecystitis, and biliary calculi were the commonly associated findings. New etiologic and clinical concepts of choledochal cysts are reviewed and the spectrum of radiographic features in adults is presented.Presented at 77th Annual Meeting of the American Roentgen Ray Society, Washington, D.C., September 1976     

50例畸胎瘤的B超诊断

本文总结50例畸胎瘤的B超图象表现,分为三种类型,即囊液型、混合型、实质型。并声像图与手术结果对照分析;从而提出畸胎瘤B超诊断的特异性回声。并对畸胎瘤作鉴别诊断分析     

眼眶皮样囊肿及表皮样囊肿的CT表现

目的 评价CT对眼眶皮样、表皮样囊肿的诊断价值。方法 总结分析21例眼眶皮样囊肿的CT表现并与术中所见和病理诊断进行对照。结果 21例CT检查均发现眶内占位，圆形、椭圆形、半圆形或哑铃状，肿块内均有负CT值区，3例呈均匀一致的透明区，其余18例高度不均质，4例可见明显密度分界面，2例强化扫描，囊内容不强化，囊壁呈环状强化。18例位于眶骨膜下间隙者均可见眶骨壁受压所致的骨窝、骨孔、骨洞、骨缺损、骨嵴、骨增生以及骨吸收等改变。21例均接受手术治疗，术中所见囊肿的位置、形状以及眶骨壁改变与CT发现一致，术后均被病理检查证实。结论 肿块密度不均匀，有负CT值区、眶骨壁发生改变是眼眶皮样囊肿的特征性表现，CT检查具有定性、定位诊断价值。