BACKGROUND Ovarian cancer is an important neoplasm that is difficult to diagnose and treat; therefore, prevention is the preferable strategy. Growing evidence indicates a protective effect of breastfeeding on ovarian cancer risk. OBJECTIVE The objective was to investigate the association between lactation and the risk of ovarian cancer among southern Chinese women. DESIGN A case-control stu...

CONTEXT Cystic neoplasms, which are less common forms of exocrine pancreatic neoplasms, consist of mainly intraductal papillary mucinous neoplasms (IPMN) and mucinous cystic neoplasms. Mucinous cystic neoplasms, unlike IPMN, are not associated with ductal growth, are usually multilocular in nature, and have ovarian type stroma. Mucinous cystadenocarcinoma is a type of mucinous cystic neoplasm m...

Cystic neoplasms of the liver are divided into two types: mucinous cystic neoplasm and cystic intraductal papillary neoplasm of the bile duct. We herein report two cases of cystic and papillary neoplasm of the liver which differed from the abovementioned types. Case  1. A 70-year-old man. Radiologically, a cystic tumor measuring 20 mm in diameter was found at the hepatic hilum. Right hepatectom...

A paraneoplastic neurological disorder (PND) may be defined as one in which a particular neoplasm associates with a remote but specific effect on the nervous system more frequently than would be expected by chance1. The range of tumours that can provoke these disorders is relatively limited. The commonest is small cell lung tumour, where a prospective study of 150 cases detected a paraneoplasti...

Being a family of scarce endometrial stromal tumor, low-grade endometrial stromal sarcoma (LGESS) is an uncommon malign neoplasm, whose occurrence outside the uterus, like peritoneum, is extremely rare in the absence of metastasis or invasion of a primary uterine neoplasm. Herein we present the patient of a 44-year-old woman with no specific discomfort and abdomen-related symptoms who underwent...

Mature cystic teratoma (MCT) is a common ovarian neoplasm in young females. A secondary malignant transformation occurs rarely in cystic teratomas at an older age. These secondary malignant neoplasms most commonly are squamous cell carcinomas (SCCs). Various mechanisms are reported, but the exact aetiology is unknown. We report three cases of SCC arising in cystic teratoma and one case of papil...

Non-inflammatory cystic lesions of the pancreas are increasingly recognized. Two distinct entities have been defined, i.e., intraductal papillary mucinous neoplasm (IPMN) and mucinous cystic neoplasm (MCN). Ovarian-type stroma has been proposed as a requisite to distinguish MCN from IPMN. Some other distinct features to characterize IPMN and MCN have been identified, but there remain ambiguitie...