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Large-cell neuroendocrine carcinoma of the lung: a clinicopathologic study of eighteen cases and the efficacy of adjuvant treatment with octreotide.

Filosso PL, Ruffini E, Oliaro A, Rena O, Casadio C, Mancuso M, Turello D, Cristofori RC, Maggi G

Department of Thoracic Surgery, San Giovanni Battista Hospital, University of Torino, Torino, Italy. pierluigifilosso@tiscalinet.it

OBJECTIVE: This study was undertaken to evaluate the efficacy of a new adjuvant protocol with octreotide, alone or in combination with radiotherapy, in radically resected large cell neuroendocrine carcinomas of the lung. METHODS: Between 1990 and 2001, a total of 18 consecutive patients affected by large cell neuroendocrine carcinomas of the lung were operated on. Lobectomy and systemic lymphadenectomy were performed in all cases. Postoperative radiotherapy was performed when stage was higher than Ib. Ten patients with positive results of preoperative indium In-111 pentetreotide scintigraphy received octreotide after the operation. RESULTS: Nine patients (50%) had local recurrences or distant metastases (mean recurrence time 14 months); palliative chemotherapy was given, but all patients died. In 10 cases (55.5%) octreotide alone or in combination with radiotherapy was administered as adjuvant treatment; 9 of these patients (90%) are alive and free of disease ( P = .0007), and the other had liver and brain metastases 21 months after surgery. CONCLUSIONS: Our preliminary results seem to demonstrate the efficacy of octreotide as adjuvant therapy in large cell neuroendocrine carcinomas of the lung when results of preoperative indium In-111 pentetreotide scintigraphy were positive. Further study are required to assess the utility of octreotide in patients with negative results of indium In-111 pentetreotide scintigraphy.

Published 11 April 2005 in J Thorac Cardiovasc Surg, 129(4): 819-24.
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