This paper is based on a careful study of nine cases of submucous lymphoid cell tumor of the small intestine which have been diagnosed at the Surgical Pathological Laboratory of Johns Hopkins Hospital as round cell sarcoma or chronic inflammatory tumor. The report also includes three cases of similar tumors in the large intestine. For the purpose of comparison, four cases of tuberculosis, three of carcinoma, three of adenoma and one of myxofibroma are also reported.

The name chronic inflammatory tumor has been used by various pathologists to designate various lesions which are on the borderline between true neoplasms and chronic inflammatory tissue. Osteitis fibrosa, giant cell tumor of the bone, xanthoma and Hodgkins' disease of the lymph glands belong to this category. The term granulation tissue tumor is also applied to these lesions.

The histologic study of the nine tumors of the small intestine and three of the colon