Table of Contents
What is a cystadenoma?
Cystadenoma is an uncommon, benign cystic epithelial neoplasm that frequently contains epithelium-lined papillary projections into the cystic spaces. They represented 0.7% of benign parotid tumors in a series based on the WHO classification.
What is papillary cyst?
A papillary projection is defined as solid tissue that protrudes into the cyst lumen with a height of at least 3 mm but with no upper limit of size. Histological diagnosis was mucinous cystadenocarcinoma Stage 1. (b) Solid tissue that does not protrude into the cyst lumen is not a papillary projection.
Can papillary projections be benign?
At pathology, papillary projections in an ovarian mass are considered diagnostic of epithelial stromal tumor, commonly referred to as epithelial tumors, which can be benign, borderline, or malignant [1–4].
Are papillary projections cancerous?
What is the pathophysiology of papillary cystadenoma?
Papillary cystadenoma is of mesonephric derivation. It originates in the efferent ductules of the head of the epididymis in the form of tiny precursor lesions. Histologically, papillary cystadenoma is characterized by cystic spaces with intracystic papillary projections lined by clear cells, with a resultant resemblance to renal cell carcinoma.
What is papillary cystadenoma of minor salivary glands?
Papillary cystadenoma of the minor salivary glands is a rare benign neoplasm that clinically resembles mucous cysts. Characteristic histological features are diagnostic. However, salivary gland histology is particularly difficult to interpret.
What is papillary serous cystadenocarcinoma?
Papillary serous cystadenocarcinoma is labeled at center right. As with most ovarian tumours, due to the lack of early signs of disease these tumours can be large when discovered and have often metastasized, often by spreading along the peritoneum.
What kind of cancer is a cystadenoma?
Know Cancer. Cystadenoma. A cystadenoma is a type of cystic adenoma, referred to as a cystadenocarcinoma when malignant. They can appear in different areas of the body but usually found in the salivary glands, ovaries, or pancreas; the three most common types of cystadenomas are: