Nuchal Fibrocartilaginous Pseudotumor



Nuchal Fibrocartilaginous Pseudotumor


Cyril Fisher, MD, DSc, FRCPath









Hematoxylin & eosin shows chondroid metaplasia within dense fibrous tissue of nuchal ligament, shown here at its junction with deep fascia. (Courtesy J.X. O’Connell, MD.)






Hematoxylin & eosin shows nuchal fibrocartilaginous pseudotumor with area of cartilaginous metaplasia, which displays variable basophilic staining of chondroid stroma. This area is sparsely cellular.


TERMINOLOGY


Definitions



  • Metaplastic (pseudoneoplastic) nodule of fibrocartilage originating within nuchal ligament


ETIOLOGY/PATHOGENESIS


Environmental Exposure



  • Nuchal ligament subject during neck flexion to mechanical trauma from spinous processes



    • Sesamoid bone formation might result from fibrocartilaginous metaplasia


  • Most patients have history of whiplash or direct trauma, commonly motor vehicle crash


  • Rare examples are spontaneous


CLINICAL ISSUES

Jul 9, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Nuchal Fibrocartilaginous Pseudotumor
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