All cases that present puzzling diagnostic problems are of interest, but this is especially true of cases in which there is known to be an abdominal tumor or in which a tumor is found at operation or autopsy. To the surgeon, the abdominal tumor is of particular interest. He wants to know if it is removable; if so, whether removal will result in permanent cure, and whether by the time the diagnosis is made if secondary growths have formed in other localities which will make cure impossible. It is of interest to know whether the tumors are primary or secondary to a growth at a distance. It is also of interest to know whether they represent local manifestations of general disease.
Because of personal experience, which will form the subject of this paper, I venture to discuss, under one title, some observations that may seem unrelated except for the fact
COHN I. RETROPERITONEAL TUMORS: REPORT OF CASES. Arch Surg. 1931;23(4):655–689. doi:10.1001/archsurg.1931.01160100114004
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