Variação morfológica no padrão lobar e nas fissuras dos pulmões: relato de caso / Morphological variation in the lobar pattern and in the fissures of the lungs: a case report

Modelo do estudo: Relato de caso. Importância do problema: Lobos e fissuras acessórias nos pulmões podem induzir a erros de interpretação e diagnóstico, além de favorecer a disseminação de patologias como a pneumonia para lobos adjacentes. Dessa forma, a constatação dessas alterações anatômicas pode colaborar em diagnósticos clínicos e procedimentos cirúrgicos. Comentários: Relatamos um caso raro de modificação anatômica nos lobos e fis-suras dos pulmões. O pulmão esquerdo exibia um lobo médio acessório e uma fissura horizontal completa. Por outro lado, o pulmão direito apresentava duas fissuras acessórias incompletas situadas inferiormente na face costal do lobo médio. Além disso, observamos que o hilo do pulmão esquerdo continha dois brônquios lobares (superior e inferior), um brônquio lobar acessório e três artérias pulmonares. O conhecimento das variações anatômicas aqui relatadas é fundamental, pois auxiliam os profissionais da saúde nos diagnósticos e nas decisões terapêuticas e cirúrgicas.(AU)

Study: Case Report. Importance: Lobos and accessory fissures in the lungs can induce errors of interpretation and diagnosis, as well as favor the spread of pathologies such as pneumonia to adjacent lobes. Thus, the confirmation of these anatomical alterations can collaborate in clinical diagnoses and surgical procedures. Comments: We report a rare case of anatomical variation in the lobes and fissures of the lungs. The left lung showed an accessory middle lobe and a complete horizontal fissure. On the other hand, the right lung had two incomplete accessory fissures located inferiorly in the costal face of the middle lobe. In addition, we observed that the left lung hilum contained two lobar bronchi (upper and lower), one accessory lobar bronchus and three pulmonary arteries. Knowledge of the anatomical variations reported here is fundamental, as they help health professionals in diagnoses and therapeutic and surgical decisions (AU)

Variation In Lobes And Fissures Of Lung

Introduction: Lungs are the paired vital organs meant for respiration situated in the thoracic cavity on either sideof the heart. The right lung is divided into supe-rior, middle & inferior lobes by oblique and horizontal fissure.While the left lung is divided into supe-rior & inferior lobes by an oblique fissure. The fissures permit distensionof the lobes during respiration. The fissures may be complete, incomplete or absent.Aim: To find out the variations in fissures and lobes along with their patterns, in human lungs; collected fromcadavers.Result: Out of 50 right lung specimen, the horizontal fissure was absent in two cases whereas the horizontalfissure was incompletely seen in 18 specimens. Incomplete oblique fissure was seen in 7 right sided lungs. Wereported accessory fissures and accessory lobes in 14 specimens. The oblique fissure was absent in 4 left lungsand it was incomplete in 14 lungs. Accessory fissures and lobes were present in 8 specimens.Conclusion: Knowledge of any variations is necessary in performing segmental resection and lobectomy. Accessoryfissures indicate persistence of prenatal fissures.

An anatomic variant caudate lobe in a cadaver.

The liver can present a number of congenital anomalies. Most common among them are the irregularities in shape and the number of lobules. Less common variations include presence of accessory lobes or accessory fissures. The accessory lobe may be attached to the liver through a mesentery or a bridge of hepatic tissue and they are usually asymptomatic. An accessory liver lobe though a very rare occurrence but when it exists it becomes clinically important because of its rarity. We are reporting one such case of accessory caudate lobe of liver found during routine dissection of embalmed cadaver of a 60 year old male. It was separated from the caudate lobe by a well-defined fissure. The quadrate lobe and fissure for ligamentum teres were totally absent. Ligamentum teres was found embedded in the substance of the liver on its inferior surface. The presence of additional lobes and fissures or the absence of normal lobes and fissures might lead to confusion during surgery or clinical misdiagnosis. Knowledge and awareness of these anomalies is useful to the clinician to rule out diseases, surgeons during segmental resection of liver and radiologist when interpreting liver radiologic findings.