Chest
Volume 130, Issue 5, November 2006, Pages 1405-1411
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Original Research
Bronchoscopic Cryotherapy Treatment of Isolated Endoluminal Typical Carcinoid Tumor

https://doi.org/10.1378/chest.130.5.1405Get rights and content

Background

Bronchial typical carcinoid tumors are rare. The “gold standard” treatment is surgery, but there is literature to support bronchoscopic therapy with curative intent. Based on the efficacy of cryotherapy for in situ lung cancer, we studied the safety and efficacy of rigid bronchoscopic treatment with cryotherapy on isolated endoluminal typical carcinoid tumors.

Methods

All the patients from the Department of Pulmonary Diseases and Thoracic Oncology of St. Etienne University Hospital (France), and of Hôpital Notre Dame, University Hospital of Montreal referred with typical carcinoid were screened. Inclusion criteria included the following: proven typical carcinoid, strictly endoluminal disease amenable to bronchoscopic therapy, and no evidence of lymph node invasion. All patients had a complete removal of the tumor, and all patients received cryotherapy to the implantation base.

Results

Twenty-nine patients were screened, and 18 were included. Mean age was 47 years, and study population included 11 women. Median follow-up was 55 months. There was a single recurrence 7 years after the initial bronchoscopic treatment.

Conclusions

Cryotherapy is a safe and effective adjunct to endobronchial mechanical resection of typical carcinoids. Unlike other adjuncts that have been proposed, cryotherapy is not associated with long-term complications including bronchial stenosis.

Section snippets

Protocol

All the patients assessed by the Department of Pulmonary Diseases and Thoracic Oncology at St. Etienne University Hospital, France, and Department of Pulmonary Disease, Nôtre Dame Hospital, Montreal, Canada for typical carcinoid were screened. Endobronchial biopsies of these lesions were performed via flexible bronchoscopy to confirm that they were indeed typical carcinoids. Selection criteria included the following: proven typical carcinoid without additional pathology in the resected

Results

Of the 29 patients referred for endobronchial resection of carcinoid tumor, 18 satisfied the inclusion criteria and were enrolled. One patient was excluded due to the absence of a CT scan prior to bronchoscopy. This patient refused surgery and was subsequently treated using cryotherapy with an excellent result without evidence of disease recurrence in the 12-month follow-up period. In the other 10 patients, surgery was performed for the following reasons: in two cases (18%), the final pathology

Discussion

Carcinoid tumors of the lung are rare neuroendocrine tumors. The World Health Organization classifies carcinoids into typical and atypical. The most important criterion to differentiate between these two entities is the mitotic count; < 2/2 mm2 mitoses without necrosis2 is consistent with a typical carcinoid. Clinically, these patients present in a similar fashion as those included in our series.13

Typical carcinoids appear to be less aggressive, and a limited resection with bronchoplastic

Conclusion

Cryotherapy is a safe and effective adjunct to endobronchial mechanical resection of typical carcinoids. Unlike the other adjuncts that have been proposed, cryotherapy is not associated with long-term complications including bronchial stenosis, and it offers a tissue-sparing strategy.

ACKNOWLEDGMENT

We thank to Dr, Gaetane Michaud, Calgary for help in English-language reviewing.

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Reproduction of this article is prohibited without written permission from the American College of Chest Physicians (www.chestjournal.org/misc/reprints.shtml).

Drs. Jean-François and Vergnon are members of the French Speaking Group on Thoracic Endoscopy.

The authors have no conflicts of interest to disclose.

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