Definition / general 75% males Usually presents with solitary asymptomatic lymphadenopathy of head and neck; more frequently in elderly in Japan (Int J Surg Pathol 2003;11:101) May be part of evolutionary spectrum with follicular hyperplasia and follicular [pathologyoutlines.com]

Epithelioid histiocytic clusters, immunoblasts, mononuclear cells, and eosinophils may also be present. Solitary or multiple nodules may be found. The immunophenotypes of both PTGC and NLPHD may be identical (CD45+, CD20+, CD15-, CD30-). [pubmed.ncbi.nlm.nih.gov]

Treatment[edit] PTGC is treated by excisional biopsy and follow-up. [en.wikipedia.org]

PTGCs is a reactive process of undetermined etiology, that is usually characterized clinically by localized lymphadenopathy and is typically asymptomatic. [commons.wikimedia.org]