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The most common cause of visualization of the stomach on a bone scintigram is poor labeling with resultant free pertechnetate concentrating in the stomach. Hypercalcemia with metastatic calcifications is the second most common cause of visualization of the stomach. Small or large bowel visualization is seen with urinary diversion, necrotizing enterocolitis, and bowel infarction.
Artifacts.
Total body bone scan obtained 4 hours after the injection of the radiotracer shows free pertechnetate in the stomach, thyroid, and salivary glands. Technetium-99m colloid accumulation in the liver is also present.
Hyperparathyroidism
Whole-body bone scintigram shows increased uptake in the stomach and lungs in a patient with primary hyperparathyroidism.
Neuroblastoma
This whole-body bone scintigram demonstrates increased radionuclide
uptake in the left upper abdomen due to large neuroblastoma.
Ascites
Whole-body bone scintigram shows diffuse increased radiotracer uptake
over the protuberant abdomen in a patient with peritonitis.
Urinary Diversion
Bone scintigram (anterior view) in a patient with
ureterosigmoidostomy shows radionuclide activity in the colon.
Ileal Conduit
(A) Bone scintigram (anterior view) shows absence of the bladder and
a collection of activity projecting over the right hemipelvis, a finding
that corresponds to an ileal conduit seen on lateral view (B) and on
retrograde pyelography (C).
Urine contamination
Multiple hot spots are present on the anterior image (A) of a bone
scan. After removal of contaminated clothes, all hot spots disappeared
(B).