Objective: Carcinosarcoma is a rare malignant tumor with both carcinomatous and sarcomatous components. Carcinosarcoma can appear in various organs, but its occurrence in the head and neck, particularly larynx, is extremely rare. Furthermore, its response to treatment has not been well established.
Methods: We report the case of a 79-year-old man with a 6-month history of hoarseness who presented with a mass having a polypoid appearance at the anterior commissure of the larynx. Further analyses revealed carcinosarcoma in the larynx that consisted of squamous cell carcinoma and an inflammatory myofibroblastic tumor (IMT).
Results: The tumor was excised at the first hospital visited. Because pathological examination revealed an IMT and positive margin, the patient was referred to our hospital. A front lateral vertical partial laryngectomy was performed for further treatment. Histological examination demonstrated a biphasic component, consisting of squamous cell carcinoma (SCC) and IMT.
Conclusions: IMT rarely occurs in the head and neck region. Moreover, to best of our knowledge, no carcinosarcoma cases consisting of SCC and IMT in the larynx have been reported in the literature. The prognosis of carcinosarcoma is considered to be dependent on the type of malignant mesenchyme, and surgical excision with wide margins is generally used to treat IMT. Therefore, the treatment of laryngeal carcinosarcoma consisting of IMT can be best accomplished with complete excision of the tumor.
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