Abstract
Langerhans cell histiocytosis (LCH) manifesting as a parotid gland mass is an extremely rare clinical presentation. We report a case of LCH involving the bilateral parotid glands in an 81-year-old Japanese female. Pathologically, the lesion was characterized by numerous lymphoid follicles, dense lymphoplasmacytoid infiltrate and cystic dilatation of the parotid gland duct in addition to nodular and diffuse proliferation of LCs. Moreover, both LCs and small T-lymphocytes invaded the ductal epithelium forming a lymphoepithelial lesion-like morphology. The present case indicates that LCHs should be added to the different diagnosis for marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue type involving the salivary glands.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
