Primary synchronous mesenteric neuroendocrine tumors: Report of a rare case with review of literature.

Most neuroendocrine tumors of the gastrointestinal tract are traditionally termed "carcinoid tumors." More than 90% of all gastrointestinal carcinoids are located in the appendix, small intestine, rectum, and mesenteric carcinoids are rare. Even when invasive, most carcinoids are relatively indolent and display minimal histological pleomorphism. A minority of these tumors is clinically more aggressive and has a less differentiated histological pattern. Carcinoid tumors of the intestine frequently invade the mesentery, but a primary carcinoid of the mesentery is extremely rare. Mesenteric carcinoid tumors can go unrecognized due to nonspecific symptoms. We report an unusual case of two large primary mesenteric carcinoid tumors in a 38-year-old male who had excellent recovery following surgery. A complete histopathologic, immunohistochemical, and radiologic workup enabled correct diagnosis in this case.

Solitary fibrous tumour of the kidney: case report with review of the literature.

Solitary Fibrous Tumour (SFT) is an unusual spindle cell tumour that usually occurs in the pleura, but has recently also been reported to be extra-pleural in origin. A renal presentation is very rare. Upto 90% of the tumours have benign characteristics. It is difficult to differentiate it from renal cell carcinoma by using imaging techniques. A definitive diagnosis can be made by doing a detailed pathological examination, which includes immunohistochemistry. We are reporting a case of a large solitary fibrous tumour of the kidney which here occurred in a 70-years-old male. Histological examination of the resected specimen confirmed the diagnosis, by revealing strongly positive reactions of the neoplastic cells for CD34, bcl-2, vimentin and negativity for Epithelial Membrane Antigen (EMA), Smooth Muscle Actin (SMA), S-100 protein and Ki-67. The patient suffered a cardiac arrest and died on the seventh day after his surgery.