Intestinal lymphangiectasia caused severe diarrhea and generalized edema in a 40-year-old man. The diagnosis was established by clinical, laboratory, and duodenal biopsy findings. The abnormalities detected on computed tomography (CT) and scintigraphy using 99mTc human serum albumin are herein described and pertinent literature is briefly reviewed.
Gastric emptying studies, using an indigenously prepared radiolabeled solid food marker in the form of Indian bread called Chapati, were performed on 13 patients with systemic sclerosis. Six patients had limited cutaneous disease and seven had diffuse cutaneous disease. Earlier, the procedure was standardized in 30 healthy volunteers. Seven of the 13 (54%) patients (five with diffuse and two with limited cutaneous disease) had delayed gastric emptying. Most of these patients had gastric symptoms. This pattern of gastric emptying may be clinically significant, particularly in patients with diffuse cutaneous disease.
Some factors, such as the effect of mannitol as 'stabilizer', increased concentration of thiosulfate, autoclaving conditions, etc., that can affect the preparation of 99mTc-sulfur colloid and consequently its biodistribution into different tissues are discussed. Also discussed are parameters, such as distribution with respect to time, effect of storage, preloading dose, etc., that can influence the uptake of the radiopharmaceutical by the RES in animals and humans.
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