DOI: http://dx.doi.org/10.18203/2320-6012.ijrms20211383

Bilobed right lung: a case of absent horizontal fissure

Ankita Chauhan, Suman Yadav, Nitin Patiyal

Abstract


The human lungs are organs of respiration present in the greater part of thoracic cavity on each side of heart in the mediastinum resting on diaphragm. The right lung is classically divided into three lobes namely superior, middle and inferior by the oblique and horizontal fissures. The left lung is divided into superior and inferior lobes by a single deep oblique fissure. The fissures help in expansion of lungs during respiration. During the routine dissection of thoracic region of human cadaver, bilobed right lung with absent horizontal fissure was observed. The right lung was divided into superior and inferior lobe by a single oblique fissure. The left lung had normal anatomy in this case. The variations in the fissures and lobar pattern of lungs are common and are due to altered developmental process during intrauterine life. The anatomical knowledge of these disparities in fissures is important for clinicians prior to performing any pulmonary surgical procedures and to prevent postoperative complications.

 


Keywords


Absent horizontal fissure, Bilobed right lung, Case report

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References


Muresian H. Lungs and diaphragm. In; Stringer MD, Standring S, editors. Gray's anatomy: the anatomical basis of clinical practice. 41st ed. London: Elsevier. 2016;957-8.

The thorax. In Romanes GJ, editors. Cunningham’s Manual of practical anatomy. Thorax and abdomen.15th ed. Oxford university press. 2010;30-4.

Snell RS. Clinical anatomy by regions. Wolters Kluwer (India). 2018;78-9.

The lungs. In Dutta AK. Essentials of human anatomy (Thorax and Abdomen).10th ed. Current books international: India. 2018;32-7.

Craig SR, Walker WS. A proposed anatomical classification of the pulmonary fissures. J Royal College Surgeons Edinburgh. 1997;42(4):233-4.

Respiratory system. In; Sadler TW. Langman's medical embryology. 12th ed Wolters Kluwer (India). 2019;229-33.

Schoenwolf GC, Bleyl SB, Brauer PR, Francis-West PH. Development of the Respiratory System and Body Cavities. In Larsen's human embryology 5th ed. Philadelphia: Elsevier. 2015;252-5.

Meenakshi S, Manjunath KY, Balasubramanyam V. Morphological variations of the lung fissures and lobes. Indian J Chest Dis and Allied Sci. 2004;46:179-82.

Chauhan A, Yadav S, Patiyal N. Right lung with distinct lobar pattern: an unusual variant. Int J Sci Res. 2020;9(11):11-2.

George BM, Nayak SB, Marpalli S. Morphological variations of the lungs: a study conducted on Indian cadavers. Anatomy cell biol. 2014;47(4):253-8.

Ughade JM, Kardile PB, Tekade PR. Variation in lobes and fissures of lung. Int J Anat Res. 2018;6(1.3):4973-80.