VARIATIONS OF FISSURES AND LOBES OF HUMAN LUNGS - A CADAVERIC STUDY

Dr. Soumali Biswas; Dr. Madhumita Datta; Dr. Asis Kumar Ghoshal

Volume : VII, Issue : V, May - 2018

VARIATIONS OF FISSURES AND LOBES OF HUMAN LUNGS - A CADAVERIC STUDY

Dr. Soumali Biswas, Dr. Madhumita Datta, Dr. Asis Kumar Ghoshal

Abstract :

Background – Both the human lungs are divided into lobes by fissures and the knowledge of this lobar anatomy, along with its variation, is important for both radiologist for C.T scan interpretation and surgeons for performing lobectomy.

Aim –To study the incidence of variation in lung fissures, grade it and study the presence of any accessory lobes.

Method – 100 formalin hardened human lungs were studied for the presence of any variation in the fissures, classified according to Craig and Walker criteria and presence of any accessory fissures or lobes were noted.

Result– Incomplete oblique fissure were seen in 36% of right and 24% of left lung; incomplete horizontal in 38% of right lung; absence of oblique fissure was noted in 6% and 2% of right and left lung respectively.12% showed absent horizontal fissure in right lung. Accessory fissure was seen in 6% of left lungs.

Conclusion– Variations in lung fissures are relatively common. This knowledge is important for surgeons and cardiothoracic surgeons while performing lobectomy in order to reduce the mortality and morbidity arising out of invasive procedures. Radiologist must be aware of presence of accessory lobes or fissures as this may lead to mis–interpretation of C.T scan.