technetium-tc-99m-pyrophosphate and Laryngeal-Diseases

SPECT findings in a very rare case of primary amyloidosis localized in the laryngotracheobronchial area are reported. SPECT using Tc-99m PYP revealed widespread uptake in the larynx and the entire tracheobronchial tree up to the subsegmental divisions; the areas corresponded to diffuse thickening and calcification of the walls on CT. SPECT using Ga-67 citrate also showed marked uptake in the same area, consistent with the findings shown by SPECT using Tc-99m PYP.

Topics: Adult; Amyloidosis; Bronchial Diseases; Evaluation Studies as Topic; Gallium Radioisotopes; Humans; Laryngeal Diseases; Male; Respiratory Tract Diseases; Technetium Tc 99m Pyrophosphate; Tomography, Emission-Computed, Single-Photon; Tomography, X-Ray Computed; Tracheal Diseases