Thyroid & parathyroid

Other thyroid nonneoplastic

Postoperative spindle cell nodule

Last author update: 1 August 2014
Last staff update: 31 December 2020

Copyright: 2014-2023,, Inc.

PubMed Search: postoperative spindle cell thyroid

Sheren Younes, M.D., Ph.D.
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Cite this page: Younes S. Postoperative spindle cell nodule. website. Accessed September 30th, 2023.
Definition / general
Clinical features
  • Thyroid mass
  • History of surgery or FNA
Radiology description
Case reports
Microscopic (histologic) description
  • Spindle cell proliferation
  • Bland cytology, no pleomorphism
  • Low mitotic count, no atypical mitoses
  • Other features may be seen as scattered inflammatory cells and histiocytes, focal myxoid change and delicate blood vessels
Microscopic (histologic) images

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Gross and microscopic findings

Cytology description
  • Spindle cells with histiocytes, vague granulomatous pattern
Cytology images

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Fragments of fibrocollagenous tissue

Positive stains
Electron microscopy description
  • Characteristic myofibroblastic features
Differential diagnosis
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