Rare Manifestation of Primary Pulmonary Carcinoid Tumor as Non-Obstructive Consolidation with Angiogram Sign

Abstract

Pulmonary carcinoid tumors are considered to be a low grade malignancy, and comprise 1-2% of pulmonary malignancies. Pulmonary carcinoid tumors are usually distributed centrally, resulting in atelectasis or consolidation secondary to bronchial obstruction. With regard to peripheral pulmonary lesions, the tumors are ovoid or lobulated. However, in our patient with pulmonary typical carcinoid tumor, the main pulmonary lesion was a nonobstructive consolidation, which has never been reported in the literature. In addition, the computed tomography (CT) angiogram sign seen in our case is a rare finding in pulmonary carcinoids. Chemotherapy-related deep vein thrombosis and pulmonary embolism occurred 2 weeks after the initiation of cisplatin and etoposide therapy, leading to a poor prognosis. (Thorac Med 2011; 26: 338-345)