RT Journal A1 RAUCH RF T1 REtroperitoneal lymphangioma JF A.M.A. Archives of Surgery JO A.M.A. Archives of Surgery YR 1959 FD January 1 VO 78 IS 1 SP 45 OP 50 DO 10.1001/archsurg.1959.04320010049008 UL http://dx.doi.org/10.1001/archsurg.1959.04320010049008 AB Lymphangioma has been called the rarest of tumors found in the retroperitoneal region. Only isolated case reports of cavernous or cystic retroperitoneal lymphangiomas have been seen.1-4,7-13,15,17-21 I am reporting two cases of retroperitoneal cystic lymphangioma because of the rarity of the lesion. A review of the literature of all previously recorded cases of retroperitoneal lymphangioma has been added to acquaint the general surgeon, urologist, and gynecologist with the clinical findings of this condition.Report of Cases  Case 1.  —A 17-year-old sheet-metal worker entered Mount Carmel Hospital on July 10, 1955, complaining of nausea, vomiting, and generalized abdominal pain of 14 hours' duration. The colicky pain increased with activity and defecation. The past history was negative.Physical examination disclosed a well-developed. well-nourished youth who appeared acutely ill. The temperature was 100.2 F, pulse 92, B. P. 114/80, and respirations 24. Physical examination was essentially normal except for muscle spasm throughout