2025 Volume 3 Issue 2 Pages 123-127
Anomalous systemic arterial supply to the normal basal segment is a rare congenital anomaly in which the basal segment of the lung has a normal bronchial pattern but lacks a normal pulmonary artery. Instead, it receives blood supply from the aorta and drains into a normal pulmonary vein. A 75-year-old woman was incidentally found to have a left lower lobe mass on abdominal magnetic resonance imaging. Contrast-enhanced computed tomography (CT) revealed a nodule in left S10 segment along with anomalous systemic arterial supply to the normal basal segment. 18F- fluorodeoxyglucose positron emission tomography/CT demonstrated fluorodeoxyglucose uptake in the left lower lobe nodule. Bronchoscopy and transbronchial biopsy confirmed the diagnosis of invasive mucinous adenocarcinoma. Since it was not possible to resect the tumor surgically, chemotherapy was initiated. Although the coexistence of primary lung cancer with anomalous systemic arterial supply to the normal basal segment is rare, histopathological diagnosis should be actively considered for masses near the aberrant artery rather than relying solely on imaging findings to ensure timely diagnosis and treatment.
