Kidney tumor
Other adult malignancies
Metanephric / mesonephric adenosarcoma

Author: Sean R. Williamson, M.D.

Revised: 19 April 2018, last major update July 2012

Copyright: (c) 2003-2018, PathologyOutlines.com, Inc.

PubMed Search: Metanephric adenosarcoma OR mesonephric adenosarcoma

Cite this page: Williamson, S.R. Metanephric / Mesonephric adenosarcoma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/kidneytumormalignantmetaadenosarcoma.html. Accessed October 16th, 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