- Case records of the Department of Medicine University of Mississippi Medical Center. 1) Malignant lymphoma, low-grade, polymorphic. T cell small lymphocytic lymphoma versus lymphomatoid granulomatosis, involving intestines, mesentery, omentum, refroperitoneal lymph nodes, lungs heart, liver, and spleen. 2) Malignant ascites. Mihas, A.A., Cole, R.K., Hughson, M.D. Journal of the Mississippi State Medical Association. (1999)