Tonsillar calculus is a relatively rare disease. A 49-year-old man visited us with chief complaints of pharyngitis, and redness and swelling of the unilateral soft palate. Incision of Ciari's position produced no discharge of pus, and administration of antibiotios and antiinflammatory agents was ineffective. From these findings, under the suspicion of malignant tumor of the tonsil close examination was carried out. Facial lateral X-ray film revealed a stone in the tonsil. The size of the stone was 10 × 11 × 12mm.
