sodium-pertechnetate-tc-99m and Intestinal-Neoplasms

Topics: Aged; Erythrocytes; Female; Gastrointestinal Hemorrhage; Gastrointestinal Stromal Tumors; Hematocrit; Humans; Intestinal Neoplasms; Intestine, Small; Radionuclide Imaging; Radiopharmaceuticals; Sodium Pertechnetate Tc 99m

Hemangioma of the small intestine is rare, and the preoperative diagnosis of it is difficult. We report a patient with gastrointestinal bleeding for whom Tc-99m-labeled red blood cell scintigraphy was useful in diagnosing cavernous hemangioma of the small intestine. A 25-year-old man was referred to our hospital for recurrent iron deficiency anemia. Because of the patient's severe anemia, imaging was performed to locate the bleeding lesion in the gastrointestinal tract. Scintigraphy with Tc-99m-labeled red blood cells revealed pooling indicating a tumor and extravasation of blood from the tumor. Scintigraphy with Tc-99m pertechnetate revealed no abnormal accumulation. Partial resection of the small intestine was done, and cavernous hemangioma of the small intestine was diagnosed by using the specimen of resected tissue.

Topics: Adult; Anemia; Capillaries; Erythrocytes; Gastrointestinal Hemorrhage; Hemangioma, Cavernous; Humans; Intestinal Mucosa; Intestinal Neoplasms; Intestine, Small; Male; Radionuclide Imaging; Radiopharmaceuticals; Sodium Pertechnetate Tc 99m

The detectability of ectopic gastric mucosa by Technetium (Tc)-99m pertechnetate abdominal scanning was investigated by reviewing 62 such scans in 52 pediatric patients with gastrointestinal hemorrhage. The histologic diagnoses and clinical conditions were correlated to the findings of the scans. There were 21 true-positives, 35 true-negatives, one false-positive and five false-negative studies. The overall sensitivity of this scan for the detection of ectopic gastric mucosa was 81%, the specificity was 97% and the accuracy was 90%.

Topics: Adolescent; Child; Child, Preschool; Choristoma; Female; Gastric Mucosa; Gastrointestinal Hemorrhage; Humans; Ileal Neoplasms; Infant; Intestinal Neoplasms; Male; Meckel Diverticulum; Predictive Value of Tests; Radionuclide Imaging; Sensitivity and Specificity; Sodium Pertechnetate Tc 99m

Topics: Adult; Aged; Choristoma; Erythrocytes; Female; Gastric Mucosa; Gastrointestinal Hemorrhage; Humans; Intestinal Neoplasms; Male; Meckel Diverticulum; Middle Aged; Radionuclide Imaging; Sodium Pertechnetate Tc 99m; Technetium

Hypervascularity and persistent uptake were demonstrated in a small bowel leiomyoma not actively bleeding at the time of Tc-99m RBC scintigraphy. The potential value of Tc-99m RBC scanning in the evaluation of benign small bowel tumors is discussed.

Topics: Aged; Erythrocytes; Humans; Intestinal Neoplasms; Intestine, Small; Leiomyoma; Male; Radionuclide Imaging; Sodium Pertechnetate Tc 99m

A case of coexistent cystic and tubular duplications of the small intestine is presented. Staged resection resulted in maximal preservation of small intestinal length. Intraoperative radionuclide scanning is suggested as a technique to assure complete removal of ectopic gastric mucosa. The literature regarding multiple duplications is reviewed and the management of duplications involving long segments of the small intestine is discussed.

Topics: Choristoma; Gastric Mucosa; Humans; Infant; Intestinal Neoplasms; Intestine, Small; Male; Radionuclide Imaging; Sodium Pertechnetate Tc 99m

Two children with rectal bleeding were diagnosed as having ulcerative colitis and a bleeding colonic polyp respectively using abdominal scanning with Tc-99m pertechnetate. Early flow studies are recommended with careful attention paid to the amount of time abnormal areas of activity are seen on the abdominal scan.

Topics: Child; Colitis, Ulcerative; Female; Gastrointestinal Hemorrhage; Humans; Intestinal Neoplasms; Intestinal Polyps; Radionuclide Imaging; Rectum; Sodium Pertechnetate Tc 99m; Technetium; Time Factors