1999 年 45 巻 8 号 p. 533-535
A 16-year-old boy presented with a submental mass, which on biopsy proved to bea lymph node with atypical follicular hyperplasia. Seven months after the biopsy, enlarging lymph nodes of left submandibular and left retroauricular region were detected. A second biopsy was performed. After further histological study, this case was correctly diagnosed as lymphadenitis with progressive transformation of germinal centers.