cystadenocarcinoma of ovary in preadolescence: An ordinary tumor but at an unexpected age.
Ovarian neoplasms Surface Origin epithelium Germ cells Frequency 65 - 70% 15 - 20% % of malignant 90% 3 - 5 % Age 20+ 0 - 25+ Types Serous Teratoma Mucinous
Dysgerminoma Endometrioid Endodermal sinus Clear Cell Choriocarcinoma Brenner Origin Parenchyma (sex cord-stroma) Metastases Frequency 5 - 10% 5% % of malignant 2 - 3% 5% Age All Variable Types Fibroma Granulosa-theca cell tumor Sertoli-Leydig cell tumor Cystadenofibroma Adapted from: Robbins and Cotran; Pathologic Basis of Disease, 7th Ed Copyright [C] 2005 Elsevier Junqueira and Carneiro; Basic Histology, 11th Ed Copyright [C] 2005 McGraw-Hill Antonio Westphalen, M.
The basic pathophysiology in PMP is leakage of mucus containing epithelial cells into the peritoneal cavity from a ruptured mucinous
Mucoceles are frequently discovered incidentally, as most are the result of a mucinous
cystadenoma that causes no inflammation (2).
The histopathology of these tumors varies from predominantly ductal to lobular, mixed ductal and lobular, tubulolobular, mucinous
, and adenoid cysticlike.
cystic neoplasms of the liver: a clinicopathological study and comparison with intraductal papillary neoplasms of the bile duct.
The final histology revealed mucinous
cyst adenoma of the appendix (fig 2).
Eight patients with pancreatic neoplasia were confirmed by surgery or fine-needle aspiration (10% yield of screening); of these, six patients had benign intraductal papillary mucinous
neoplasms (IPMNs), one had an IPMN that progressed to invasive ductal adenocarcinoma, and one had a PanIN-1.
The book is organized by type of proliferation of the lesions: ductal, apocrine, mucinous
Moore said it was close to or at 100% in all but mucinous
type is composed of mucous (goblet) cells, while nonmucinous type has clara cells and type II cells.
Many younger patients (<50 years) were black South Africans and presented with proximal tumours that were often poorly differentiated or mucinous
and with significant risk of loss of hMS[H.