8472/1 Mucinous cystic tumor of borderline malignancy


Synonyms

Mucinous cystadenoma, borderline malignancy
Pseudomucinous cystadenoma, borderline malignancy
Mucinous tumor, NOS, of low malignant potential
Atypical proliferative mucinous tumor

Definitions

Fallopian tube and Uterine ligaments
ICD-O-3 topography code: C57

A low malignant potential cystic epithelial neoplasm arising from the exocrine pancreas. It occurs almost exclusively in women. Small tumors are usually found incidentally. Larger tumors usually produce symptoms related to compression of the adjacent structures. It is characterized by the presence of columnar, mucin-producing epithelial cells which form papillary projections or crypt-like invaginations. There is cellular pseudostratification and mitotic activity present. Complete surgical removal is usually associated with an excellent prognosis.



Ovary
ICD-O-3 topography code: C56

A low malignant potential cystic epithelial neoplasm arising from the exocrine pancreas. It occurs almost exclusively in women. Small tumors are usually found incidentally. Larger tumors usually produce symptoms related to compression of the adjacent structures. It is characterized by the presence of columnar, mucin-producing epithelial cells which form papillary projections or crypt-like invaginations. There is cellular pseudostratification and mitotic activity present. Complete surgical removal is usually associated with an excellent prognosis.