Articles Related to Immunohistochemical Staining
A Case of Solitary Fibrous Tumor of the Mesorectum: Usefulness of Immunohistochemical Staining for a Differential Diagnosis from a Gastrointestinal Stromal Tumor
Extrapleural solitary fibrous tumors (SFT) and gastrointestinal stromal tumors (GISTs) are similar morphologically and on imaging studies. We report a case of a patient with a giant pelvic tumor, which was difficult to be diagnosed. A 71-year-old male presented to our hospital with a complaint of urinary retention. A radiological examination showed a giant pelvic tumor mass, which ventrally compressed the urinary bladder and rectum, and was supplied by vascular flow from the right internal iliac artery. The resected specimen was 15 × 10 cm, elastic soft, and solid pale yellow in color. Because the tumor was histologically composed of spindle-shaped cells and was CD34 positive, cytokeratin negative, epithelial membrane antigens negative and KIT negative, we first thought the tumor was a KIT-negative GIST.
Sudden Death Due to Sarcoma: An Unusual Case and Literature Review
Sudden death has varied causes, and autopsy is usually required to determine cause of death. Sarcoma involvement is very infrequent, and detailed pathological evaluation is needed for correct diagnosis.