Artery of Percheron Ischaemic Stroke: A Classic Presentation of a Rare Case

The artery of Percheron (AoP) is a rare anatomic variant, where the paramedian thalami and the rostral midbrain are supplied by an artery emerging from the P1 segment of the posterior cerebral artery. Ischaemic infarction of the artery of Percheron occurs rarely, accounting for 0.1 to 2% of all ischaemic strokes. AoP occlusion can lead to an infarction of the paramedian thalami and mesencephalon, resulting in a triad of clinical features; namely, altered mental status, vertical gaze palsy and memory impairment. A larger mesencephalon infarction can also feature oculomotor disturbances. We describe here the case of an 88-year-old patient, presenting with this triad of features.

Thoracoscopic Resection of a Rare Congenital Lung Lesion With a Tracheal Bronchus

A tracheal bronchus is a rare anatomic variant characterized by a bronchus originating from the trachea rather than the carina. These are most commonly asymptomatic and found incidentally but can cause recurrent pneumonias in children. Here, we present a case of a thoracoscopic resection of an azygous lobe with a tracheal bronchus in a 9-year-old female.

Gallbladder duplication as an incidental finding: a rare anatomic variant.

Resumen La duplicidad de la vesícula biliar es una malformación congénita poco frecuente que puede presentarse de tres formas diferentes en función de la morfología de la propia vesícula y de la vía biliar. La sintomatología que suele provocar es superponible a los casos de vesícula biliar única, siendo la mayor parte de los casos asintomáticos. Es importante realizar un correcto diagnóstico mediante pruebas de imagen para que, en el caso de que tenga que intervenirse quirúrgicamente, orientar al cirujano de forma precisa.

Rare Anatomic Variation: The Hepatosplenomesentericophrenic Trunk

The rare anatomic variants of the celiac trunk and superior mesenteric artery include the hepatosplenic, hepatosplenomesenteric (HSMT), celiacomesenteric, hepatomesenteric and gastrosplenic trunks. We report a 72-year-old female patient whose computed tomography angiograms indicated a rare anatomic feature whereby the right inferior phrenic artery was inserted in the origin of an HSMT, thus modifying it into a hepatosplenomesentericophrenic trunk (HSMPT). Above the HSMPT, the insertion of the left inferior phrenic artery in the origin of the left gastric artery determined a left gastrophrenic trunk (GPT). Proper identification of this type of rare anatomic variant is of utmost importance prior to different surgical procedures. For example, an HSMT origin of the right inferior phrenic artery is surgically relevant if this artery is an extrinsic pedicle of a hepatocellular carcinoma and is used for embolization of the tumor.