Table of Contents
Definition / general | Case reports | Microscopic (histologic) description | Microscopic (histologic) images | Differential diagnosisCite this page: DePond W. Squamous epithelium inclusions. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/lymphnodessquamousepithelium.html. Accessed June 1st, 2020.
Definition / general
- 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)
Case reports
- 48 year old woman with axillary intranodal cysts associated with breast malignancy(Arch Pathol Lab Med 2004;128:361)
- 33 and 64 year old women with benign heterotopic epithelial inclusions in axillary lymph nodes (Arch Pathol Lab Med 2003;127:e25)
- 57 and 75 year old women with cystic lymphoepithelial lesions of peripancreatic nodes (Surg Today 1999;29:467)
- Epithelial inclusion in axillary lymph node associated with a breast carcinoma (Pathol Res Pract 1999;195:263)
Microscopic (histologic) description
- Small cystic structures lined by well differentiated squamous epithelium
Microscopic (histologic) images
Images hosted on other servers:
epithelial inclusions
in breast node
cyst (figure 1: H&E,
inset CK5/6; 2: p63)
Differential diagnosis
- Metastatic well differentiated squamous cell carcinoma: often undergoes cystic change
