Benign lymphoepithelial lesion

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Benign lymphoepithelial lesion, also known as benign lymphoepithelial cyst, is a rare benign lesion of the head and neck.

It should not be confused the lymphoepithelial lesion found in the GI tract.

General

  • Usually parotid gland.
  • Associated with autoimmune disease, e.g. Sjoegren disease, may not remain benign.[1]

Microscopic

Features:

  • Lymphocytes.
  • Ductal epithelial cells.[2]

Note:

IHC

  • CD20, CD3 -- mixed population.
  • Kappa ~ lambda.

See also

References

  1. Goto, TK.; Shimizu, M.; Kobayashi, I.; Chikui, T.; Kanda, S.; Toshitani, K.; Shiratsuchi, Y.; Yoshida, K. (May 2002). "Lymphoepithelial lesion of the parotid gland.". Dentomaxillofac Radiol 31 (3): 198-203. doi:10.1038/sj/dmfr/4600690. PMID 12058269.
  2. Metwaly, H.; Cheng, J.; Ida-Yonemochi, H.; Ohshiro, K.; Jen, KY.; Liu, AR.; Saku, T. (Jul 2003). "Vascular endothelial cell participation in formation of lymphoepithelial lesions (epi-myoepithelial islands) in lymphoepithelial sialadenitis (benign lymphoepithelial lesion).". Virchows Arch 443 (1): 17-27. doi:10.1007/s00428-003-0824-0. PMID 12761623.