1/60. Anomalies of the human hyaloid system.We describe two asymptomatic cases of persistent anomalies of the human hyaloid system. fluorescein angiography of a cyst of the hyaloid system shows leakage from the hyaloid vessels.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
2/60. Vascular adrenal pseudocyst: cytologic and immunohistochemical study.Adrenal vascular cysts are rare lesions that might be considered in the differential diagnosis of adrenal tumors. Their origin is not clear. We report the clinicopathological findings of a large adrenal hemorrhagic pseudocyst (AHP) in a 73-yr-old man who complained of abdominal pain. An abdominal CT showed a 9 cm tumor in the left adrenal. A fine-needle aspiration biopsy (FNAB) was hemorrhagic and inconclusive. The tumor was excised and touch imprints were taken showing groups of spindled and fusiform cells with elongated nuclei, without atypia. Histologically, the tumor was well delimited by a fibrous capsule and contained numerous cystic spaces lined by endothelial cells and filled with erythrocytes, fibrin thrombus, and necrotic debris. Immunohistochemical study showed strong positivity for factor viii-RA, CD31, and CD34. Also, the remaining adrenal showed a prominent frame of thin and medium caliber vessels, supporting a vascular origin for this entity. This case illustrates the difficulty in making a diagnosis by FNA and to keep in mind AHP when hematic aspirates are obtained from an adrenal tumor mass.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
3/60. Enteric duplication cyst associated with melanosis peritonei.melanosis peritonei is usually associated with benign cystic teratomas of the ovary. We describe a one-and-a-half-year-old girl with melanosis peritonei associated with enteric duplication cyst. Melanophages were seen in aggregates in and around the serosal blood vessels, nerve bundles, and scattered within the muscular wall of the cyst. Presence of hyperplastic nerve bundles associated with melanophages suggests their origin from the neural crest.- - - - - - - - - - ranking = 8.8502696201198keywords = blood vessel, vessel (Clic here for more details about this article) |
4/60. Omphalocele and umbilical cord cyst. prenatal diagnosis.We present a case of intrauterine fetal death at 32 week's gestation with omphalocele, umbilical cord allantoic cyst and polyhydramnios. Ultrasound diagnosis of anomalies was performed at 23 weeks of gestation. Fetal karyotype was normal: 46 XX. This association has been found to have a high rate of chromosomal abnormalities, especially trisomy 18. It's difficult to explain the reason why intrauterine fetal death has happened; one possible hypothesis is that the cord cyst, compressing umbilical vessels, have caused intrauterine vascular compromise of blood flow.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
5/60. Ivemark syndrome: asplenia with kidney collecting duct cysts and polysplenia with cerebellar cyst.Two newborns, one male and one female, from two different families, with Ivemark syndrome proven at autopsy are reported. One of them had asplenia and another had polysplenia. Both newborns had complex cardiac defects with isomerism of the lungs. The newborn with asplenia had dextrocardia, transposition of the great vessels, stenosis of the pulmonary artery, common atrioventricular canal and patent ductus arteriosus. The newborn with polysplenia had a common atrium, hypoplastic left ventricle and patent ductus arteriosus. The patient with asplenia had cystic dilated collecting ducts of the kidney and the patient with polysplenia had cerebellar cyst. These associate malformations have not been reported previously. Both cases were sporadic.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
6/60. Relationships of virtual reality neuroendoscopic simulations to actual imaging.Advances in computer technology have permitted virtual reality images of the ventricular system. To determine the relevance of these images we have compared virtual reality simulations of the ventricular system with endoscopic findings in three patients. The virtual fly-through can be simulated after definition of waypoints. Flight objects of interest can be viewed from all sides. Important drawbacks are that filigree structures may be missed and blood vessels cannot be distinguished clearly. However, virtual endoscopy can presently be used as a planning tool or for training and has future potential for neurosurgery.- - - - - - - - - - ranking = 8.8502696201198keywords = blood vessel, vessel (Clic here for more details about this article) |
7/60. Adventitial cystic disease in the common femoral artery.The rare condition of adventitial cystic disease with massive cysts in the common femoral artery was treated in a 49-year old man. The symptoms were calf and thigh claudication. Angiography showed occlusion of the common femoral artery and the deep femoral artery. The condition was obvious peroperatively, and after clearing the deep artery, a bypass (ePTFE) to the two femoral run off vessels was needed. After an uneventful postoperative period, it was observed at three months' follow-up, that the patient had foot pulses.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
8/60. Juxtapapillary subretinal pigment epithelial polypoid pseudocysts associated with unilateral tilted optic disc: case report with clinicopathologic correlation.OBJECTIVE: To describe the unique preoperative appearance, successful postoperative clinical course, and histopathologic features of a cluster of progressively enlarging pseudocysts that arose at the temporal margin of a unilateral tilted optic disc. STUDY DESIGN: Case report. methods: Clinical observation, color fundus photography, fluorescein angiography, and optical coherence tomography, as well as routine histologic and immunohistochemical studies of tissue removed by subretinal surgery. RESULTS: Subretinal surgical excision of the lesions resulted in retinal reattachment with improved postoperative visual acuity. Histologic examination disclosed a cluster of fluid-filled polypoid pseudocysts lined by small vessels of choroidal origin lying beneath the basement membrane of the overlying retinal pigment epithelium (RPE). CONCLUSIONS: We postulate that buds of small vessels of choroidal origin grew through or around the edge of Bruch's membrane at the temporal margin of the tilted optic disc and then passed under the juxtapapillary RPE. Ensuing leakage of proteinaceous fluid from these vessels eventuated in formation of a cluster of polypoid pseudocysts and subsequent localized papillomacular retinal separation with visual loss. The lesions were amenable to subretinal surgical removal with restoration of visual acuity.- - - - - - - - - - ranking = 3keywords = vessel (Clic here for more details about this article) |
9/60. thoracic duct cyst presenting as an hour-glass shaped mass in the left supraclavicular area: case report.thoracic duct cyst presenting as an hour-glass shaped mass in the left supraclavicular area: case report. thoracic duct cysts are a very rare entity in the head and neck pathology. We present a case of a 52 year-old man, who was referred to our service, complaining by a 30 days left cervical mass, with no other symptoms. A 6 cm cystic mass was revealed after ultrasonography and CT. Needle aspiration confirmed the presence of lymph in the cyst. The treatment was simple excision. Special care was taken to ligate the connected lymphatic vessels.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
10/60. Retroperitoneal cystic metastasis from a small clear cell renal carcinoma.A 39-year-old housewife was referred to our hospital for the treatment of a small renal tumor. A 25 x 35 mm cystic mass that had been detected by computerized tomography scan just caudal to the renal hilus proved to be a metastasis from the renal carcinoma of clear cell type. The pathogenesis may have been due to tumor cells obstructing a lymphatic vessel draining the kidney. Cystic metastasis from renal cell carcinoma is very rare and this appears to be the second published case in the world.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
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