Retroperitoneal lipoma arising from the urinary bladder
نویسندگان
چکیده
Retroperitoneal benign lipomas are extremely rare and represent about 2.9% of all primary retroperitoneal tumors. About 80% of the tumors in the retroperitoneal cavities are malignant neoplasms. We experienced a case of a retroperitoneal lipoma simulating an ovarian mature cystic teratoma. A diagnosis was correctly made by magnetic resonance imaging (MRI) prior to surgery, and a total tumorectomy was performed. The retroperitoneal lipoma was recognized to have arisen from the urinary bladder. Histological sections revealed a tumor consisting of typical adipose cells without atypia. These types of lipomas should be carefully followed-up because they often recur and undergo malignant transformations.
منابع مشابه
Urinary Bladder Hemangioma –A Rare Urinary Bladder Tumor in a Child
Urinary bladder hemangiomas are rare, accounting for 0.6% of the urinary bladder tumors. Hemangioma is considered arising from embryonic stem cells of an angioblastic lineage. A 3-year old boy presented with hematuria. He had past operative history of excision of extensive lymphatic malformation involving retroperitoneum, pelvis and upper thigh. Computed tomography scan of abdomen and pelvis wi...
متن کاملRare Case of Retroperitoneal Lipomatosis in an Indian Woman.
Retroperitoneal lipomatosis is a rare but distinct clinicopathological entity characterized by non encapsulated lipoma development in the retroperitoneum. Presenting complaints in the early stages are vague, and patients with retroperitoneal lipomatosis are often misdiagnosed because considerable abnormality is not detected by abdomino-pelvic sonography. However, because of the progressive natu...
متن کاملRhabdomyosarcoma of Urinary Bladder
A 10 year old boy presented with straining, weak stream, sense of incomplete voiding, suprapubic discomfort and occasional dribbling of urine for 6 months. General and systemic examinations revealed no abnormality. Urine examination showed plenty of red blood cells (RBCs) and few pus cells; however the culture was sterile. Hematological and biochemical investigations were normal. Ultrasonograph...
متن کاملSimultaneous occurrence of urothelial bladder carcinoma and primary retroperitoneal leiomyosarcoma.
A case of primary carcinoma of the urinary bladder associated with a primary retroperitoneal leiomyosarcoma is presented. Due to the lack of early symptoms, diagnosis of the retroperitoneal leiomyosarcoma was late and therefore the prognosis was poor. Twelve months after diagnosis the patient died not of the bladder tumor, but of the recurrent leiomyosarcoma.
متن کاملPlasmacytoid Urothelial Carcinoma of Ureter with Retroperitoneal Metastasis: A Case Report
BACKGROUND Plasmacytoid is a rare histological variant of urothelial carcinoma (UC). Since the first reported case of plasmacytoid urothelial carcinoma (PUC), in 1991, only about 100 cases have since been reported, with most cases involving the bladder. Urothelial carcinomas of the upper urinary tract represent only 5% of urothelial cancers. To the best of our knowledge, there has only been 1 r...
متن کامل