Abstract
UNTIL a few years ago pseudotuberculosis was thought to be a rare disease, and it received almost no attention in clinical or laboratory diagnosis. Then, in 1953, Masshoff1 and Masshoff and Dölle2 described an abscess-forming reticulocytic lymphadenitis, usually in children operated on for supposed appendicitis. Since the histologic changes in affected lymph nodes rather resembled those of cat-scratch lymphadenitis and of lymphogranuloma inguinale, Masshoff assumed that the morbid process he observed was due to a viral infection. Hörstebrock,3 on the other hand, classified it as blastomycosis.The causative organism was identified in 1954 by Knapp4 and Knapp and Masshoff5 as . . .