Joints
Nonneoplastic disease
Cutaneous metaplastic synovial cyst


Topic Completed: 1 February 2013

Minor changes: 26 September 2019

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PubMed Search: Cutaneous metaplastic synovial cyst

Related topics: Synovial cyst

Vijay Shankar, M.D.
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Cite this page: Shankar V. Cutaneous metaplastic synovial cyst. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/jointscutaneousmetaplasticsynovialcyst.html. Accessed May 24th, 2020.
Definition / general
  • Lined by metaplastic synovial tissue
  • May be due to local trauma
Case reports
Treatment
  • Surgical excision; recurrence is rare
Clinical images

Images hosted on other servers:

Solitary, well demarcated 3 cm mass

Cystic lesion filled with gelatinous material

Microscopic (histologic) description
  • Cystic structure with papillary projections lined by epithelium resembling synovium
Microscopic (histologic) images

Images hosted on other servers:

Numerous villous-like structures

Villous structures
lined by membrane
of varying cellularity

Vimentin+ CD34- CD68-

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