A T THE present time it is most unusual to encounter abdominal tumors of great size. Last year before the Pathological Society of Philadelphia I reported the successful removal of an ovarian cyst weighing 33 pounds. It was thought then that the limit in size had been reached until this patient presented herself for operation. Larger and heavier tumors have been reported than the case under consideration. The reader is referred to Gould and Pyle’s book 011 Anomalies ad Curio&d in Medicine. Before operation a diagnosis of ovarian cyst was made. During the operation it was also thought that we were dealing with a huge cyst of the ovary. In certain areas thin walls were noted which contained fluid, while in other areas, solid masses could be felt throughout the tumor mass. After the examination by the pathologist it was decided that this particular neoplasm originally arose from uterine tissue because the tumor was attached to the uterus, and part of the fundus of the uterus had to be sacrificed in its final removal. The pedicle was rather short and fixed. A. R., age thirty-ilve years, admitted to the Mt. Sinai Hospital March 2, 1930. The chief complaint was an enormous swelling of the abdomen. About nine years ago patient was seized with sharp abdominal pain in conjunction with her menstrual period. About that time she first noticed a small swelling in her lower abdomen which has become progressively larger. The patient was walking about and working as a druggist up to six weeks ago. when following a nervous breakdown due to business reverses she was advised to rest in bed. She is usually very thirsty, dyspneic, appetite good, and bowels regular. She has no urinary symptoms. Menstruation began at thirteen, was regular, no excessive bleeding. No pain associated with menstruation. She has menstruated about three times in the past three years, last period about ten months ago. Even in the presence of the tumor she considered that she enjoyed good health, except that in the past six weeks she has felt quite weak. She has never been pregnant. Blood pressure 104/58. She was a white, poorly nourished female adult sitting in bed, complaining of thirst, breathing with slight difficulty, with an enormously distended abdomen. On account of the size of the abdomen the edematous legs are sharply abducted and cannot be addueted unless the tumor is raised with the assistance of two persons. The contour of the chest is rendered insignificant as a result of the huge abdomen. The heart action is regular, and the organ is displaced to the left. The abdomen is enlarged to a sphere whose circumference is 5 feet 8 inches. The skin is enormously stretched from the epigastric region to the apex of the swelling. The umbilicus is at a point opposite the epigastric region. The skin of the abdomen is edematous. Upon palpation there are felt areas of fluctuation and other areas of solidity on the lateral aspects of the mass. The mass is painless. Urea nitrogen 13. Blood sugar 0.115. Wassermann weakly positive, Type III. Gruskin test negative. Urine showed no albumin or sugar. Hemoglobin 33, R. B.C. 2,170,000, W. B. C. 6700, polymorphonuclear 88, S.M. 7, L.M. 1, TR. 2, eosinophiles 1. Myelocytes-Polychrom, Anesopoikilocytes present.