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Volume 24, Number 6, 2019

First report of pulmonary large cell neuroendocrine carcinoma treated with stereotactic body radiation therapy

Shearwood McClelland, Gregory A. Durm, Thomas J. Birdas, Paul M. Musto, Tim Lautenschlaeger

Summary:

Introduction Pulmonary large-cell neuroendocrine carcinoma (LCNEC) is a very rare disease, comprising approximately 3% of lung cancers. Even for Stage I disease, recurrence after resection is common, with a poor five-year overall survival. We present the first report of stereotactic body radiotherapy (SBRT) for pulmonary LCNEC. Methods A 54-year-old woman with a left upper lobe pulmonary nodule underwent a wedge resection with thoracoscopic mediastinal lymph node dissection, revealing a 2.3 cm pT1b N0 LCNEC. Approximately one year later, surveillance imaging demonstrated a new left upper lobe PET-avid nodule, resulting in completion left upper lobectomy revealing LCNEC, with 0/6 involved lymph nodes and negative staging studies. The patient subsequently chose surveillance over adjuvant chemotherapy; unfortunately 23 months later imaging revealed an enlarging 0.7 cm nodule adjacent to the previous resection site, despite the patient remaining in good health (KPS = 90). Subsequent restaging demonstrated no evidence of metastatic disease. Due to the morbidity of a third operation in this region, and based on the safety of SBRT for Stage I non small-cell lung cancer, the consensus decision from our thoracic oncology team was to proceed with SBRT as preferred management for presumptive second recurrence of LCNEC. The patient shortly thereafter underwent SBRT (50 Gy in 10 Gy/fraction) to this new nodule, 41 months following initial LCNEC diagnosis. Results Four months following SBRT, the patient remains in excellent clinical condition (KPS 90), with no evidence of disease spread on surveillance studies. The nodule itself demonstrated no evidence of growth following SBRT. Conclusions This first report of SBRT for pulmonary LCNEC demonstrates that SBRT is a feasible modality for this rare disease. A multidisciplinary thoracic oncology approach involving medical oncology, thoracic surgery, radiation oncology and pulmonology is strongly recommended to ensure proper patient selection for receipt of SBRT.

Signature: Rep Pract Oncol Radiother, 2019; 24(6) : 507-510


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Indexed in: EMBASE®, the Excerpta Medica database, the Elsevier BIOBASE (Current Awareness in Biological Sciences) and in the Index Copernicus.

http://www.sciencedirect.com/science/journal/15071367/19/2