Lymph nodes - not lymphoma
Inclusions, pigment, ectopic cells or tissue
Squamous epithelium inclusions
Reviewer: William D. DePond, M.D. (see Reviewers page)
Revised: 3 July 2013, last major update June 2006
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.
- Also called lymphoepithelial cyst
- Most common in upper cervical nodes
- Depending on location, may be a branchial pouch derivative or derive from metaplastic calyceal urothelium (Hum Pathol 1990;21:1239)
- Small cystic structures lined by well differentiated squamous epithelium
Intranodal cystic epithelial inclusions in breast node
Axillary intranodal cyst (figure 1: H&E, inset CK5/6; 2: p63)
End of Lymph nodes - not lymphoma > Inclusions, pigment, ectopic cells or tissue > Squamous epithelium inclusions
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