Histological types of peritoneal mesothelioma

Membrane mesothelioma (peritoneal mesothelioma) for the primary in the peritoneal epithelium and mesothelial cancer organizations, clinical rare. Can be categorized as pathological adenomatoid mesothelioma (adenomatoid mesothelioma), cystic mesothelioma (cystic mesothelioma) and malignant mesothelioma (peritoneal malignant mesothelioma, PMM).
Malignant mesothelioma is also known as "mesothelial sarcoma." Mostly occurs in the pleura and peritoneum, testis sheath, pericardium, meninges. More men than women, the ratio of 1.33:1. Occurs can be divided into parts according to the limitations and diffuse types. Limitations may have good evil points, both diffuse malignant. Among them, mostly diffuse peritoneal and pericardial. Low incidence of malignant mesothelioma, clinical rare.

Peritoneal mesothelioma histologic sub-three types: epithelial 15%, connective tissue-type 25%, mixed 60%. Longitudinal spread along the peritoneal surface lesion showed growth and invasion, and less distant metastasis, multi-spread along the serosa to the adjacent organs, involving the adjacent serous cavity; dual lymph node metastasis may occur; distant metastasis. Particularly prevalent in the hepatopulmonary bone. This case is almost are evil CT of peritoneal mesothelioma, symptoms of non-specific and therefore difficult early diagnosis. The main symptoms were (1), abdominal pain, generally expressed as a fixed part of the dull pain. (2) abdominal mass. (3) of the patients have incomplete obstruction. (4) ascites is a common symptom, and many more abdominal distension with ascites treatment. (5) late shows weakness, weight loss, weight loss, more than half a year were found; a minimum of two weeks. Easy-to-tissue adhesion tumor removal surgery is not easy.

CT manifestations of its performance, often as follows: (1) ascites, the amount of the number of ranges, and often bloody. (2), diffuse peritoneal thickening, thickening of the omentum and mesentery density increased, and some may have calcification, mesangial shadow blurred between the blood vessels. (3), nodule or mass formation, in the backdrop of ascites nodules more clearly, especially in the liver margin of spleen edge more pronounced. (4), omentum, or mesentery tumor was tie-shaped cakes, mesenteric stiffness, shrinkage star-shaped radiation bowels into a fan-shaped distribution of the fixed focus. But not its unique, ovarian, colon, pancreas, and mesenteric lymphoma may be represented by similar change.