Kidney tumor - Adult malignancies
Other neoplasms - Adult or adult/child
Metanephric / Mesonephric adenosarcoma

Author: Sean Williamson, M.D. (see Authors page)

Revised: 8 February 2017, last major update July 2012

Copyright: (c) 2003-2017,, Inc.

PubMed Search: Metanephric adenosarcoma OR mesonephric adenosarcoma

Cite this page: Metanephric / Mesonephric adenosarcoma. website. Accessed March 19th, 2018.
Definition / general
  • Very rare tumors with sarcomatous stroma and benign epithelium
Case reports
Microscopic (histologic) description
  • Separate but contiguous or intimately mingled epithelial and stromal components
  • Epithelium: small cuboidal cells with scant cytoplasm, forming papillary projections, tubules, acini, solid appearing areas, psammoma bodies, glomeruloid papillae (absence of necrosis / mitotic figures)
  • Stroma: spindle cell proliferation with high mitotic rate and necrosis
Negative stains
Differential diagnosis