title: Malignant granular cell tumor in larynx mimicking laryngeal carcinoma.
abstract: A 72-year-old man presented to our clinic with progressed husky voice, dysphagia and globus pharyngeus. Fiberoptic laryngoscopy showed a large subglottic mass with an irregular surface. A chest roentgenogram revealed multiple nodules over the right upper and lower lobes. Under the impression of malignant laryngeal tumor with lung metastasis, he underwent direct laryngeal biopsy and excision. Pathologic findings showed malignant granular cell tumor. Postoperative palliative chemotherapy was done for his lung metastasis. The multiple pulmonary nodules were decreased in size and number but not complete remission. The laryngeal tumor has not recurred after a 14-month follow-up.
authors.affiliation: Department of Otolaryngology, Head and Neck Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan.
authors.forename: Ming-Ju
authors.initials: MJ
authors.lastname: Chiang
authors.forename: Tuan-Jen
authors.initials: TJ
authors.lastname: Fang
authors.forename: Hseuh-Yu
authors.initials: HY
authors.lastname: Li
authors.forename: I-How
authors.initials: IH
authors.lastname: Chen
authors.forename: Kam-Fai
authors.initials: KF
authors.lastname: Lee
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000175:diagnosis; D017024:Chemotherapy, Adjuvant; D003680:Deglutition Disorders / Q000209:etiology; D003937:Diagnosis, Differential; D004417:Dyspnea / Q000209:etiology; D016586:Granular Cell Tumor / Q000175:diagnosis* / Q000473:pathology / Q000556:secondary / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D007822:Laryngeal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D007828:Laryngoscopy; D008175:Lung Neoplasms / Q000188:drug therapy / Q000556:secondary*; D008297:Male; D010166:Palliative Care