Absence of Horizontal Fissure of Right Lung

The right lung is divided into three lobes names superior, middle, inferior by the oblique and the transverse (horizontal) fissures. The fissures in the lung assistance even expansion of lung tissue and serve as a reliable landmark on the lung. Occasionally, an extra fissure divides a lung or a fissure is absent. In the present case, which was during the routine cadaver dissection detected, we report absence of horizontal fissure of the right lung in a 60 year old male cadaver. The position of fissures of the lung is clinically important anatomic landmarks for surgeons performing lobectomy and segmentectomy, radiologists in interpreting the MRI and CT scans