Venieratos Dionysios, Tsoucalas Gregory, Panagouli Eleni
Department of Anatomy, Medical School, National and Kapodistrian University of Athens, Greece.
History of Medicine, Department of Anatomy, Democritus University of Thrace, Alexandroupolis, Greece.
Acta Med Acad. 2018 Nov;47(2):199-203. doi: 10.5644/ama2006-124.232.
The appearance of a middle mesenteric artery is a rare branching variation, with an incidence lower than 0.1%. Our case reports such an anatomical artery pattern which was discovered in a male Caucasian cadaver during routine educational dissection. This alternation is seldom encountered and may trouble diagnostic and surgical interventions.
The case of a Middle Mesenteric Artery is described, as a vessel originating from the Abdominal Aorta 3.3 cm below the origin of the Superior Mesenteric and 3.8 cm above the origin of the Inferior Mesenteric Artery. The middle mesenteric artery, directed upwards, gives two branches for supplying blood to the head of the pancreas. We first mention the thinner branch, corresponding to the posterior one of the inferior pancreaticoduodenal artery, and second the thicker branch corresponding to the anterior branch of the Inferior Pancreaticoduodenal Artery. The main artery continues its course between the two sheets of the mesocolon to supply the transverse colon, thus substituting the normal colic artery.
The occurrence of a Middle Mesenteric Artery constitutes a very rare anatomic variation. We present, to our knowledge, the first case described where the Middle Mesenteric Artery provides blood to the pancreas.
肠系膜中动脉的出现是一种罕见的分支变异，发生率低于0.1%。我们的病例报告了在一名男性白种人尸体常规教学解剖过程中发现的这种解剖动脉模式。这种变异很少见，可能会给诊断和手术干预带来麻烦。
描述了一例肠系膜中动脉，该血管起源于腹主动脉，在肠系膜上动脉起点下方3.3厘米处，肠系膜下动脉起点上方3.8厘米处。肠系膜中动脉向上走行，发出两个分支为胰头供血。我们首先提到较细的分支，对应于胰十二指肠下动脉的后支，其次是较粗的分支，对应于胰十二指肠下动脉的前支。主动脉在结肠系膜的两层之间继续走行，为横结肠供血，从而替代了正常的结肠动脉。
肠系膜中动脉的出现是一种非常罕见的解剖变异。据我们所知，我们呈现了首例描述肠系膜中动脉为胰腺供血的病例。
