Prostate
Other malignancies
Leiomyosarcoma

Authors: Kenneth Iczkowski, M.D. (see Authors page)

Revised: 24 March 2017, last major update January 2017

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

PubMed search: prostatic leiomyosarcoma
Cite this page: Leiomyosarcoma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/prostatelms.html. Accessed March 28th, 2017.
Definition / General
  • The most common malignant spindle cell tumor of the prostate
Essential Features
  • Rare, but the most common prostatic sarcoma
  • Aggressive
  • Nonsarcomatous spindle cell proliferations must be ruled out
Epidemiology
  • Leiomyosarcoma is the most common prostatic sarcoma in adults; it may also occur in children
  • Fewer than 200 cases are reported
Etiology
Clinical Features
  • Tumor causes obstruction, and involves adjacent organs
  • Can initially present with chest metastasis (J Cancer Res Ther 2013;9:743) or in other odd ways
  • Tends to recur
  • Metastases to liver and lung
  • Mean survival 3 - 4 years
Micro Description
  • A spindle cell proliferation with atypia and mitotic activity
  • Focal necrosis may be seen
Micro Images

Images hosted on PathOut server:

Contributed by Dr. Athanase Billis, State Univ. of Campinas, Brazil



Images hosted on other servers:

Various images

Positive Stains
Negative Stains
Molecular / Cytogenetics Description
  • Cytogenetics may disclose chromosome 2, 3, 9, 11 and 19 clonal rearrangements
Differential Diagnosis
Additional References