NCIt definition : A rare, non-invasive, serous cystic tumor that arises from the paratesticular structures.
It is characterized by the presence of irregular papillary formations with irregular
branching. The papillae are lined by atypical columnar epithelial cells with eosinophilic
cytoplasm. Mitoses are rare. Metastases have not been reported.;
Neoplastic status : Uncertain Malignant Potential;