The left minor fissure

Radiology
J H Austin

Abstract

A left minor fissure (LMF) has been described anatomically as being present in 8%-18% of left lungs. Analogous to the right minor fissure (RMF), the LMF separates the anterior segment of the left upper lobe from the lingula. Two thousand consecutive normal radiographic examinations of the adult chest (posteroanterior, left lateral views with the subjects in the erect position) were reviewed prospectively. A definite LMF was identified in 32 of the subjects (1.6%). The fissure was dome-shaped (convex superior) on at least one projection in 26 (81%) of 32 subjects. The position of the LMF was usually more cephalad than that of the RMF (25 of 31 subjects, or 81%). The lateral end of the LMF was usually superior to the medial end (25 of 32; 78%) and rarely inferior to the medial end (three of 32; 9%). The LMF infrequently was horizontal (four of 32; 12%). In a number of additional patients whose control chest radiographs showed no evidence of an LMF, subsequent radiographs revealed an LMF outlined by active pulmonary or pleural disease.

Citations

Oct 16, 2008·General Thoracic and Cardiovascular Surgery·Ryu KanzakiKen Kodama
Jul 27, 2004·Journal of Thoracic Imaging·Aamer AzizKuniaki Hayashi
Jan 30, 2016·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Guillaume ChassagnonDominique Sirinelli
Aug 26, 2006·Morphologie : Bulletin De L'Association Des Anatomistes·A P Gesase
Oct 1, 1992·Clinical Imaging·R M SofranikD L Spizarny
Feb 27, 2015·Japanese Journal of Radiology·Thitiporn SuwatanapongchedSuvipaporn Siripornpitak
May 13, 2014·Radiología·C García Villafañe, C S Pedrosa
Aug 27, 1999·Pediatric and Developmental Pathology : the Official Journal of the Society for Pediatric Pathology and the Paediatric Pathology Society·A W Bates

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