Limping as the first manifestation of malignant round cell tumor

Results Whole body bone scan revealed asymmetrical increased up take in ankle and linear increased up take in left metatarsus (3th). His abdominal CT Scan showed multiple variable size hypodense lesions in bilateral kidneys and buldging and distortion of renal border. Bone marrow biopsy performed that revealed positive for CD45 and CD3. His renal lesions biopsy confirmed the diagnosis of Malignant Round Cell Tumor compatibale with TCell Leukemia and finally he went under the chemotherapy in oncology ward. Conclusion As the result of this article we conclude that midfoot arthritis is an alarming sign in children because of the assosiation with malignacies. So it is important to exclude malignacies in children whom presenting with only midfoot arthritis.