We report a patient in whom barium studies and computed tomography rev
ealed an intramural mass in the jejunum that consisted pathologically
of ectopic splenic tissue. Because the patient had a prior splenectomy
, the lesion probably represented splenosis rather than an accessory s
pleen. When intramural lesions are detected on barium studies in patie
nts who have had prior abdominal trauma or splenectomy, Tc-99m-tagged,
heated-red blood cell scintigraphy may be performed to confirm the di
agnosis, thereby eliminating the need for surgery in these patients.