technetium-tc-99m-sulfur-colloid and Carcinoma--Renal-Cell

Heterotropic splenic tissue in renal fossa is characteristically asymptomatic and is usually an incidental finding that has been reported to mimic renal or adrenal tumors. A 55-year-old man with renal cell carcinoma had undergone radical nephrectomy together with splenectomy because of disrupture of the splenic capsule. During a follow-up examination, three nodules were detected by computed tomography scan in the splenorenal area and they slowly enlarged. Although local recurrence was highly suspected, we decided to rule out splenosis. We successfully diagnosed these masses as ectopic splenic tissues by a technetium sulfur colloid scan and unnecessary surgical exploration was avoided.

Topics: Carcinoma, Renal Cell; Diagnosis, Differential; Follow-Up Studies; Humans; Kidney Neoplasms; Male; Middle Aged; Neoplasm Recurrence, Local; Nephrectomy; Positron-Emission Tomography; Radiopharmaceuticals; Splenectomy; Splenosis; Technetium Tc 99m Sulfur Colloid; Tomography, X-Ray Computed

Separate imaging studies employing Tc-99m MDP, In-111 labeled leukocytes, and Tc-99m SC were performed in a patient receiving external beam radiation therapy to the mediastinum and left hemithorax. The leukocyte scan demonstrated greatly increased activity at the site of the radiation port. The bone marrow (sulfur colloid) scan was normal and the bone scan demonstrated only minimally increased activity in the irradiated region. The varying appearance of these scans may represent the difference in the early effect of radiation on bone and bone marrow elements.

Topics: Bone Marrow; Carcinoma, Renal Cell; Humans; Indium Radioisotopes; Leukocytes; Male; Mediastinal Neoplasms; Middle Aged; Radionuclide Imaging; Radiotherapy, High-Energy; Ribs; Technetium Tc 99m Medronate; Technetium Tc 99m Sulfur Colloid; Thoracic Neoplasms; Thoracic Vertebrae

A renal mass was correctly identified with Tc-99m sulfur colloid liver-spleen scan and Tc-99m glucoheptonate scintigraphy while CT scan was misinterpreted as showing a hepatic lesion.

Topics: Aged; Carcinoma, Renal Cell; Diagnosis, Differential; Humans; Kidney Neoplasms; Liver Neoplasms; Male; Organotechnetium Compounds; Radionuclide Imaging; Sugar Acids; Technetium; Technetium Tc 99m Sulfur Colloid