1/56. Retroperitoneal liposarcoma.The diagnosis of retroperitoneal fatty tumour is not extremely difficult provided that the possibility of its presence is kept in mind by the surgeon in all cases of distended abdomen in an apparently well-nourished patient. A careful clinical examination and a good excretory pyelogram are very important in the diagnosis. Surgical excision requires a considerable amount of patience and boldness on the part of the surgeon and is always gratifying, even if the tumour cannot be totally removed. Three cases of retroperitoneal tumour treated by us are presented. All three had had previous unsatisfactory treatment, the first two being incorrectly diagnosed and the third being inadequately excised. The pathology, diagnosis and treatment of these tumours are briefly discussed.- - - - - - - - - - ranking = 1keywords = abdomen (Clic here for more details about this article) |
2/56. Recurrent liposarcomas of the abdomen and retroperitoneum: three case reports.We report three cases of patients with liposarcomas of the abdomen who had been treated during the last 13 years (1980-1993). Two patients were men, aged 29 and 51 years, with tumors of the retroperitoneal space and the third patient was a woman aged 64 years with a tumor in the peritoneal cavity. Therapeutic treatment was as aggressive as possible excision of the tumor. In the case of the first male patient, the histological examination revealed a retroperitoneal myxoid liposarcoma which recurred 5 times within 13 years. In the second male patient, it revealed a well differentiated retroperitoneal liposarcoma of the sclerosing type which recurred 5 times within 5 years since the first treatment. Finally, the one female patient had 2 recurrences of myxoid liposarcoma of the abdomen 9 years after the first operation, presented with an infected mass and has been well since then.- - - - - - - - - - ranking = 6keywords = abdomen (Clic here for more details about this article) |
3/56. Retroperitoneal teratoma presenting as acute abdomen in an elderly person.A 56-year-old man presented with acute abdomen. Clinically, he was diagnosed as having perigastric abscess. On exploration, a retroperitoneal cystic teratoma was encountered. Postoperatively, he recovered uneventfully and has no residual disease two years later.- - - - - - - - - - ranking = 5keywords = abdomen (Clic here for more details about this article) |
4/56. Retroperitoneal extraosseous osteosarcoma. A case report and review of literature.Extraosseous osteogenic sarcoma is a rare and highly malignant neoplasm. A 57 year old male patient presented with a mass in the abdomen involving the left lumber region. The ultrasound and computerized tomography (CT) scan showed a large mass arising from upper pole of the left kidney. Left radical nephrectomy was performed in April 1995. Histopathology report revealed a high grade extraosseous osteogenic sarcoma. Patient was disease free for 23 months. Although the prognosis is grave, aggressive surgical treatment with adjuvant therapy helps in prolonging the survival.- - - - - - - - - - ranking = 1keywords = abdomen (Clic here for more details about this article) |
5/56. Encasement of the spleen: case report.In a patient with extensive reticulum cell sarcoma involving the abdomen and thorax, encasement of the spleen was demonstrated by scintillation imaging. The features of this observation, not previously reported, and its diagnostic significance are discussed.- - - - - - - - - - ranking = 1keywords = abdomen (Clic here for more details about this article) |
6/56. Multiple tumors and a novel E2F-4 mutation. A case report.Defects in the dna mismatch-repair are known to cause microsatellite instability (MSI) in hereditary nonpolyposis colorectal cancer (HNPCC) as well as sporadic colorectal cancer (CRC). We previously reported that the E2F-4 gene, which encodes an important transcription factor in cell cycle control, had frequent tumor-specific mutations at the trinucleotide coding region microsatellite (CAG)n in a subset of human sporadic CRC with MSI. We report a 65-year-old man with triple tumors in the abdomen, including colon cancer, stomach cancer, and lipoma of the retroperitoneum, with the analysis of E2F-4 mutation. We report the first case of colon cancer with a homozygous E2F-4 mutation along with a detailed analysis of other cancer related genes as well as a prognosis.- - - - - - - - - - ranking = 1keywords = abdomen (Clic here for more details about this article) |
7/56. Endoscopic resection of a pelvic neurogenic tumor through the retroperitoneal approach.A pelvic neurogenic tumor resected endoscopically through the retroperitoneal approach is described. Close examination of a 62-year-old man who complained of dull pain in the lower abdomen revealed a tumor on the posterior surface of the iliacus muscle. The tumor was extracted endoscopically without the need for a laparotomy. This procedure involves a less invasive approach that may be useful for benign retroperitoneal pelvic tumors.- - - - - - - - - - ranking = 1keywords = abdomen (Clic here for more details about this article) |
8/56. A case of retroperitoneal lipoleiomyoma.We report a case of lipoleiomyoma which arose in retroperitoneum and presented with progressively distended abdomen in a 56-yr-old woman. The tumor was well encapsulated and consisted of two components, benign smooth muscle cells and mature adipose tissue without any atypia. It is likely to be mistaken as extrarenal angiomyolipoma, well-differentiated liposarcoma and leiomyoma with fatty change. We review the histologic characteristics of previously reported myolipoma and describe essential points of differential diagnosis.- - - - - - - - - - ranking = 1keywords = abdomen (Clic here for more details about this article) |
9/56. Extraovarian granulosa cell tumor.A 54-year-old woman was admitted to our hospital complaining of postcoital bleeding. Sonography of the abdomen showed a 8.2 x 8.9 cm-sized solid heterogeneous mass occupying the cul-de-sac, which appeared to be in no way connected with the ovary. On exploratory laparotomy, the tumor mass protruded from the posterolateral retroperitoneum of the pelvic cavity and severely replaced the uterus and adnexa with the outer surface being grossly intact. It grossly measured 10 cm in maximal diameter. The histologic features closely resembled those of ovarian granulosa cell tumor. The primary extraovarian granulosa cell tumor is extremely rare such that in the English literature only 7 cases have been reported to date. Of those granulosa cell tumors are especially rare and only two cases have been reported to arise from retroperitoneum. We herein present a case of retroperitoneal granulosa cell tumor with special regard to differential diagnosis from other solid tumors with similar histology.- - - - - - - - - - ranking = 1keywords = abdomen (Clic here for more details about this article) |
10/56. 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 = 1keywords = abdomen (Clic here for more details about this article) |
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