Anatomy of the Broncho Pulmonary Segments.

Senthamilselvi, A (2007) Anatomy of the Broncho Pulmonary Segments. Masters thesis, Madras Medical College, Chennai.


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The present study included both (adult and foetal) cadaveric dissections with luminal casting, bronchogram pictures and clinical study. The branching pattern of the broncho - pulmonary segments is recognised as an important anatomical tree is placing the diagnosis of any lesion in the lungs with its extent, the familiarity of which is an absolute need for the anatomists to teach, physicians to diagnose the lesions and the surgeons especially the cardio - thoracic surgeons while planning for and performing the procedure of pneumonectomy and lung transplantation from a simple segmental resection and draining of an abscess. The extensive study of the lungs is relation to the size, number, fissures, lobes and the branching pattern of the bronchopulmonary tree under various method are concluded as follows :- In all the right lung specimens studied, the oblique fissure was present and the complete horizontal fissure was found in 90.6% and incomplete horizontal fissure in 9.4% dividing the right lung into upper, middle and lower lobes. Accessory horizontal tissue was present in 6.3% of right lungs, in these specimens four lobes are present. Was observed in left lung, the presence of oblique tissue in 93.8% and left lung is divided into two lobes. The horizontal tissue was present in 6.2% of the left lungs and in these specimens three lobes are present. Trachea divides into two principal bronchi in all specimens. In 71.9% superior lobar bronchus arises from the right primary bronchus, the latter then continues as bronchus intermedius which gives left middle and inferior lobar bronchi which is the normal pattern. The superior lobar bronchus divides into apical, posterior and anterior segmental bronchi in 65.6% of the specimens. Middle losar bronchus arises from the superior lobar bronchus and the intermediate bronchus continues as the inferior losar bronchus in 25%. The middle lobar and inferior lobar bronchi arise from the superior lobar bronchus and the intermediate bronchus is rudimentary in 3.1%. In left lung specimens, the primary bronchus divides into superior and inferior lobar bronchi in 96.9%. In 3.1% of specimens there is lobar and segmental bronchial agenesis. Hence, a thorough knowledge of the anatomy of the bronchial tree is essential, not only for the diagnosis of many chest conditions, but for the planning and execution of the majority of pulmonary operations. I believe that, ever there is a wish to have a will for the way, in understanding the anatomy of the broncho-pulmonary tree and its clinical significances - as the segmental architecture of the lungs is fairly uniform, infections and neoplastic processes are often localized to one or more adjacent segments and conservation of lung tissue is thus often possible in removal of the diseased areas.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Broncho Pulmonary Segments.
Subjects: MEDICAL > Anatomy
Depositing User: Kambaraman B
Date Deposited: 22 Jun 2017 05:38
Last Modified: 22 Jun 2017 06:31

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