1/23. Multiple nodular metastases in mesenteric panniculitis by uterine papillary serous adenocarcinoma (UPSC): CT appearance of a case.Intra-abdominal panniculitis is a thickening of the mesentery of the small/large intestine due to infiltration of lipid-laden macrophages associated with a variable amount of fibrosis. This condition is rarely associated with malignant neoplasms. We report the computed tomography (CT) findings of a patient treated for uterine papillary serous adenocarcinoma (UPSC). She had mesenteric panniculitis where metastatic tumor nodules implanted. This was the only intraperitoneal recurrence. To our knowledge, no such finding has been reported in the gynecologic and radiologic literature to date. On CT images, the differential diagnosis is with cystic dilatations of mesenteric lymph vessels.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
2/23. Preperitoneal lipoleiomyoma of the abdominal wall in a postmenopausal woman.OBJECTIVE: Extrauterine leiomyomas are rare events. These tumors may be easily misdiagnosed as ovarian tumors at the clinical investigation. We present the first case of an otherwise healthy postmenopausal woman, hysterectomized 20 years ago, who developed a preperitoneal lipoleimoyoma in the 30-year-old scar of a Pfannenstiel incision. The patient received continuous hormone replacement therapy (HRT) for 5 years with 1.25 mg conjugated estrogen and 5 mg medrogeston per day. methods: In sections of the tumor, immunohistochemical reactions with antibodies against actin, desmin, vimentin, estrogen and progesterone receptors and factor viii related antigen was performed. RESULTS: Histologic findings revealed cellular fascicles of spindle-shaped smooth muscle cells in a whorled arrangement. Mitotic figures were absent. Central degenerative changes and focal edema were observed. Between muscle fascicles, a significant amount of fat cells (20% of tumor volume) was visible. Leiomyocytes showed immunohistochemicaly positive reactions with actin, desmin, vimentin, and steroid hormone receptors. Based on these findings, the tumor was diagnosed as lipoleiomyoma. CONCLUSIONS: Origin of the tumor of smooth muscle cells of vessels located in the abdominal wall and development under influence of oral steroids seems most probable. HRT appears to promote the development of extrauterine leiomyomas in postmenopausal women.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
3/23. Diffuse, retroperitoneal mesenteric and intrahepatic periportal plexiform neurofibroma in a 5-year-old boy.We present a case of plexiform neurofibroma involving the retroperitoneum, mesentery, and liver in a 5-year-old boy who underwent evaluation for extent of a palpable left neck mass. The mass had intrathoracic extension with great vessel encasement and extension into the abdomen. Abdominal CT revealed a diffuse low-attenuation non-enhancing mass encasing the retroperitoneal vessels with serpiginous extension into the liver along the portal vein. This spread pattern of plexiform neurofibroma is an unusual manifestation of neurofibromatosis in a young child.- - - - - - - - - - ranking = 2keywords = vessel (Clic here for more details about this article) |
4/23. Mesenteric paraganglioma: a case report and review of the literature.Approximately 5% to 10% of paragangliomas occur in extra-adrenal sites, which can extend from the upper cervical region to the pelvis, parallel to the autonomic nervous system. This distribution corresponds to the embryologic development of the paraganglia from neural crest cells. Rarely, extra-adrenal paragangliomas can also occur aberrantly outside this distribution. We report such a case of extra-adrenal paraganglioma occurring in the anterior mesentery in a 76-year-old man. Two case reports exist in the literature describing extra-adrenal paragangliomas in the posterior mesentery. Normal paraganglionic tissue has been described at the roots of the superior and inferior mesenteric arteries, theoretically explaining the origin of the posterior mesenteric paragangliomas. Our case can best be attributed to the ventral migration of paraganglionic tissue through these vessels to reach the anterior mesentery, where they could potentially give rise to paragangliomas in this site.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
5/23. lymphangioma of the lesser omentum associated with abdominal esophageal carcinoma: report of a case.A case of lymphangioma of the lesser omentum associated with abdominal esophageal carcinoma is described herein. The patient was a 54-year-old man who initially presented with dysphagia. Gastrointestinal fiberscopy (GIF) revealed an esophageal carcinoma and abdominal computed tomography (CT) detected a 3-cm, low-density lesion on the median aspect of the fornix, which was diagnosed as a metastatic lymph node. A radical operation was performed to resect the esophageal carcinoma, and a cystic lesion the size of a hen's egg was found in the lesser omentum of the stomach. The cystic lesion, which contained serous fluid, was unilocular and attached to the serosa of the stomach. The histological diagnosis was omental lymphangioma. Our review of the Japanese literature revealed 29 cases of lesser omental lymphangioma, but only two of these were associated with an advanced malignant tumor. Although the etiology of omental lymphangioma is unclear, the findings in our case suggested that obstruction of the lymphatic vessels invaded by the esophageal carcinoma may be one of the causes of this disease.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
6/23. Mesenteric malignant lymphoma detected with routine color Doppler ultrasonography.This report concerns a case of primary mesenteric malignant lymphoma detected with routine color Doppler ultrasonography. When a 44-year-old man underwent a first-time medical checkup, ultrasonographic imaging and computed tomography showed the presence of a large tumor measuring about 8 cm in transverse diameter. color Doppler ultrasonography identified the characteristic vessel structure of a nodal lesion, namely, a hilar vessel, a curved section of the central vessel together with peripheral branches, and focal absence of perfusion in a hypoechoic imaging of the left periumbilical area. These findings contributed to the diagnosis of a malignant lymphoma and the surgical treatment of the tumor was successful.- - - - - - - - - - ranking = 3keywords = vessel (Clic here for more details about this article) |
7/23. Antiangiogenic treatment of mesenteric desmoid tumors with toremifene and interferon alfa-2b: report of two cases.PURPOSE: Desmoid tumors are uncommon, benign, fibrous lesions occurring sporadically and in association with familial adenomatous polyposis. Typical clinical features include a locally aggressive behavior, an unpredictable course, and a high propensity for recurrence after surgical resection. There are no standard medical or surgical approaches, and no markers for monitoring medical therapy of desmoid tumors. methods: We report two cases of mesenteric desmoid tumors treated with interferon alfa-2b and toremifene, a novel regimen devised to block angiogenesis. Pre- and posttreatment desmoid tumor tissues were obtained in one patient during a repeat resection for recurrent stenosing Crohn's disease and examined for mean vessel count and cellular proliferation levels by immunostaining for the endothelial surface antigen CD31 and the proliferation associated nuclear antigen, Ki-67, respectively. We assessed plasma D-dimers, a potential marker of angiogenic activity, and followed this throughout the course of antiangiogenic therapy in our two patients. RESULTS: Examination of posttreatment tissue revealed a significant decrease in microvessel density (P<0.02) and Ki-67-positive nuclei (P<0.0001) compared with pretreatment tissue. Both patients demonstrated a prompt and sustained drop in previously elevated plasma D-dimer levels, which correlated clinically with lesion regression and sustained remission. CONCLUSIONS: Treatment with toremifene and interferon alfa-2b was successful and well tolerated in our two patients. Our data suggest a combined antiangiogenic and antiproliferative mechanism of action. Furthermore, normalization of previously elevated plasma D-dimers may emerge as a strategy to monitor treatment efficacy in mesenteric desmoid tumors.- - - - - - - - - - ranking = 2keywords = vessel (Clic here for more details about this article) |
8/23. hemangiopericytoma of mesentery: a case report.Mesenteric tumors are rare, most commonly encountered lesions are fibromatoses and leiomyoma. A case of hemangiopericytoma of mesentery in a 38 years old female is reported for its rarity. The classical histological findings and recticulin stain to demonstrate blood vessels & recticulin fibers, encircling individual tumor cells aids in the correct diagnosis.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
9/23. Conservative treatment of a mesenteric lymphangiomyomatosis in an 11-year-old girl with a long follow-up period.The authors report the case of a 11-year-old girl admitted for a mesenteric tumor discovered during an appendicectomy. The abdominal Doppler echography and computed tomography (CT) scan showed a 8 x 6 x 7-cm multinodular mass involved in the mesenterium. biological markers and iodine 131 meta-iodobenzylguanidine (MIBG) scintigraphy results were normal. Percutaneous biopsies were performed. pathology results showed perilymphatic proliferation of smooth muscle cells leading to cystic lesions. No sign of malignancy was seen. laparotomy showed a multinodular fixed mass involved from the root of the mesenterium. The superior mesenteric vessels were encircled by the tumor, which could not be resected completely. Partial resection was performed. The pathology and the immunohistochemical tests confirmed the diagnosis of lymphangiomyomatosis. At 21 years of age, she remains asymptomatic. An echography and CT scan showed the mass remaining unchanged in size and echopattern. Lymphangiomyomatosis (LMA) is thought to affect exclusively women in their reproductive life, and the steroid hormones are supposed to play an essential role in the pathology and in the behavior of this condition. Infantile LMA is exceptional. The patient reported is remarkable for her young age, the location of the tumor, her long history, and her benign course. Because the tumor is supposed to be hormone dependent, the surge of oestrogen in this 21-year-old woman may initiate the extensive form of lymphangiomyomatosis with pulmonary involvement, the prognosis of which is extremely poor.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
10/23. Benign lymphangioma of the jejunal mesentery: an unusual cause of small bowel obstruction.Lymphangiomas are rare tumours of lymphatic vessels, most commonly found in children. We present the unusual case of small bowel obstruction caused by benign lymphangioma in a middle aged woman.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
| | Next -> |