NONTRAUMATIC spontaneous rupture of an apparently normal spleen, considered by some as an impossibility, is indeed a rarity. Ask-Upmark1 studied a total of 120 cases of rupture of the spleen, and it included only 2 cases in which the history was absolutely negative regarding trauma. One of the cases concerned a 43 year old man in whom the ruptured spleen was macroscopically normal. No microscopic examination was made. The other case was that of a 30 year old man. The ruptured spleen weighed 250 Gm., and it contained no coagula. The microscopic examination showed hyalinization of the arterioles and increase of stroma. Ask-Upmark concluded that a spontaneous rupture of a normal spleen is possible, explaining it on a basis of a functional lienal apoplexy.
Zuckerman and Jacobi2 reported a case of genuine spontaneous rupture of a normal spleen in a 29 year old woman, with a report of