Acta Medica Okayama 78巻 4号
2024-08 発行
Furukawa, Chieko
Department of Otolaryngology Head and Neck Surgery, Japanese Red Cross Society Himeji Hospital
Tachibana, Tomoyasu
Department of Otolaryngology Head and Neck Surgery, Japanese Red Cross Society Himeji Hospital
Nobuhisa, Tetsuji
Department of Surgery, Japanese Red Cross Society Himeji Hospital
Kanie, Yuichiro
Department of Radiology, Japanese Red Cross Society Himeji Hospital
Wani, Yoji
Department of Pathology, Japanese Red Cross Society Himeji Hospital
Matsumoto, Jun-Ya
Department of Otolaryngology Head and Neck Surgery, Japanese Red Cross Society Himeji Hospital
Kariya, Akifumi
Department of Otolaryngology Head and Neck Surgery, Japanese Red Cross Society Himeji Hospital
Sato, Asuka
Department of Otolaryngology Head and Neck Surgery, Japanese Red Cross Society Himeji Hospital
Ishikawa, Iichiro
Department of Surgery, Japanese Red Cross Society Himeji Hospital
Naoi, Yuto
Department of Otolaryngology Head and Neck Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Ando, Mizuo
Department of Otolaryngology Head and Neck Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
No previous study has published magnetic resonance imaging (MRI) findings for a subglottic pleomorphic adenoma. Here, we describe the case of a 62-year-old man with a subglottic pleomorphic adenoma. Endoscopic findings revealed a smooth-surfaced tumor arising from the subglottic posterior wall. MRI revealed the lesion as an isointense region on T1-weighted images, which was homogeneously enhanced. This lesion showed a heterogeneously hyperintense region on T2-weighted images. Diffusion-weighted imaging (DWI) showed slightly high intensity in the same area, with a normal or only slightly high apparent diffusion coefficient (ADC). Laryngomicrosurgery was performed for transoral excision of the subglottic tumor, resulting in a postsurgical diagnosis of pleomorphic adenoma.
