Thyroid-stimulating hormone-secreting ectopic pituitary adenoma of the nasopharynx |
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Authors: | Suetaka Nishiike Ke-ita Tatsumi Takashi Shikina Chisako Masumura Hidenori Inohara |
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Institution: | 1. Department of Otorhinolaryngology – Head and Neck Surgery, Osaka University Graduate School of Medicine, Suita, Japan;2. Department of Otorhinolaryngology – Head and Neck Surgery, Osaka Rosai Hospital, Sakai, Japan;3. Department of Laboratory Medicine, Osaka University Graduate School of Medicine, Suita, Japan |
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Abstract: | Thyroid-stimulating hormone-secreting ectopic pituitary adenoma of the nasopharynx is highly unusual, with only three reported cases in the world literature. We describe the clinical presentation and radiologic findings in one patient with such rare lesions. A 46-year-old male with typical symptoms of Grave's disease was found to have a mass on magnetic resonance imaging. An otolaryngologic examination revealed a nasopharyngeal mass lesion, which was endoscopically resected. The results of immunohistochemical staining for thyroid-stimulating hormone were positive. After the resection, the patient's TSH was within normal limits. The clinical significance of the case and a brief literature review are presented. |
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Keywords: | Hyperthyroidism TSH Ectopic pituitary adenoma Rathke's pouch Extracranial |
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