RT Journal Article SR Electronic T1 Multiple myeloma involving the thyroid cartilage. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 570 OP 572 VO 17 IS 3 A1 C W Van Dyke A1 T J Masaryk A1 P Lavertu YR 1996 UL http://www.ajnr.org/content/17/3/570.abstract AB Extraosseous multiple myeloma involving the larynx is rare. We describe a patient with multiple myeloma and a plasmacytoma involving the thyroid cartilage. Ossification of the thyroid cartilage with formation of a marrow space could explain the occurrence of multiple myeloma in this unusual location.