RT Journal Article SR Electronic T1 Multiple Myeloma Involving the Thyroid Cartilage: Case Report JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 316 OP 318 VO 23 IS 2 A1 Sosna, Jacob A1 Slasky, B. Simon A1 Paltiel, Ora A1 Pizov, Galina A1 Libson, Eugene YR 2002 UL http://www.ajnr.org/content/23/2/316.abstract AB Summary: Multiple myeloma involving the thyroid cartilage is exceedingly rare. We describe a patient with progressive airway obstruction due to diffuse involvement of the thyroid cartilage with multiple myeloma. CT revealed a conglomerate of calcifications of the thyroid cartilage. Additional classic lytic lesions of multiple myeloma were subsequently found in the bones, without associated calcifications. Calcified matrix in multiple myeloma involving the thyroid cartilage should now be included as an additional manifestation of extraosseous multiple myeloma.