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In March 1999, a 70-year-old man presented with ulceration of the oral mucosa and difficulty in swallowing accompanied by pain.Clinically, the oral ulcerations were characterized by a punched-out appearance, and the circumscribed lesions showed a trend toward bleeding with pain. The clinical diagnosis was herpetic gingivostomatitis.After admission, the patient received systemic antiviral agents (aciclovir), and corticosteroid ointment was applied to the oral lesions. Despite treatment, the oral ulcers remained unchanged, and the patient had a fever of unknown origin. Microscopic examination of a specimen of the oral ulcer revealed no definitive evidence of viral infection. On immunological examination, anti-ATLA was positive, and PPD reaction was negative. Subpopulation analysis of blood lymphocytes showed an increase in CD 4-positive cells and an increased CD 4/CD 8 ratio.Viral esophagitis was confirmed histopathologically by gastrointestinal examination. These findings suggested severe immune deficiency. A diagnosis of acute adult T-cell leukemia (ATL) was made at the Third Department of Internal Medicine of our university hospital. Chemotherapy for ATL was performed; however, the patient died of respiratory dysfunction caused by ATL cell infiltration of the lung in May 2000.

A case of acute adult T-cell leukemia with severe ulcerative stomatitis considered as an early symptom.