抄録
A 31-year-old female who had had tonsillectomy six months earlier developed recurrent sore throat, slight fever and general fatigue. Medical history and local findings were highly suggestive of focal infection due to chronic inflammation of tonsil-like tissue in the left lower tonsillar fossa. After surgical extirpation, there was marked improvement. Histological examination of the extirpated tissue showed palatine tonsillar tissue with ulcer formation of crypt epithelium and proliferation of lymphatic follicular tissue, which resembled the characteristics of focal tonsils.
