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Vol.37 No.7 contents | Japanese/English |
- Case Report -
A Case of Surgically Treated Endobronchial Granular cell tumor
Hiroki Moriyama, Kazuhiko Kataoka, Motoki Matsuura, Noritomo Senoo, Yoshirou Tachiyama* and Hiroo Matsuura*Department of Chest Surgery, Hiroshima City Hospital, *Department of Pathology
A rare case of endobronchial granular cell tumor, which developed as a mass at the orifice of B3a of the right upper lobe, was treated with right upper lobectomy. A 57-year-old man under observation after surgery for cecal cancer underwent fiberoptic bronchoscopy twice at a clinic to clarify an abnormal shadow on chest X-ray. No definitive diagnosis was established. He was referred to our department for further examination. Bronchoscopy performed at our department revealed a polypoid lesion which almost completely occluded the orifice of B3a of the right upper lobe. Because the abnormal shadow on chest X-ray appeared larger compared with previous films, right upper lobectomy was performed under a suspected diagnosis of malignant tumor. Although intraoperable frozen-section analysis suggested hamartoma, the excised specimen after formalin fixation was diagnosed as granular cell tumor because it showed positive staining for PAS and S-100 protein. Endobronchial granular cell tumor is a rate condition with only 34 reported cases in Japan. Although granular cell tumor is considered to originate from nerve cells and is histologically benign, this tumor has been treated surgically in most cases.
key words: Granular cell tumor, Endobronchial tumor
Received: May 16, 1997
Accepted: September 26, 1997
JJLC 37 (7): 991-995, 1997
