Figure 1.

Endoscopic view of hypertrophic right ventricular fold (red arrow) of patient’s larynx infiltrated with extramedullary plasmacytoma (A). Neck CT scan of large tumour mass involving laryngeal structures on the right side with thyroid cartilage destruction and extralaryngeal infiltration of infrahyoid muscles (blue arrow) with increased tissue enhancement (B) and progressing to the subglottic level bilaterally with anterior part of cricoid cartilage destruction (yellow arrow) (C). Histological view of hematoxylin and eosin staining of core biopsy laryngeal specimen with mature plasma cells x10 (D). Immunohistochemical positivity for CD138 antigen x10 (E) with weak cytoplasmic kappa light chain positivity x10 (F) and complete absence of lambda light chain expresssion x10 (G).