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GAMMA HEAVY CHAIN DISEASE; REPORT OF AN AUTOPSY CASE WITH A REVIEW OF THE LITERATURES

An autopsy report of a 76 years old Japanese male, who had suffered from gamma‐HCD, was presented. This Is the fifth case of gamma‐HCD In Japan and this communication is the first autopsy report made on gamma‐HCD in our country. The primary pathological alteration of this disorder is a neoplastic proliferation of atypical lympho‐plasmacytes extending throughout the entire hematopoietic and parenchymatous organs. Pathological characteristics of our case were compared with the same disorders reported in the world literatures.