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Revista argentina de radiología

versión On-line ISSN 1852-9992

Resumen

CARRERA, Cecilia et al. Petersen's hernia: Complication of gastric bypass: CT findings. Rev. argent. radiol. [online]. 2012, vol.76, n.3, pp.241-244. ISSN 1852-9992.

The Roux-en-Y gastric bypass (RYGBP) is one of the techniques of choice in patients with morbid obesity, and at present, it is the most commonly performed bariatric procedure. It is a mixed technique, it is mainly restrictive but it also generates some degree of malabsorption. This procedure may be performed with a conventional surgical approach or with laparoscopic techniques, with the latter being the method of choice. Retrocolic anastomosis creates a space in the mesentery, allowing for the formation of a transmesenteric type of hernia known as Petersen's hernia. The aim of this article is to describe and analyze the CT findings of Petersen's hernia in patients with a history of gastric bypass. The medical records of 92 patients with a history of RYGBP (performed at our institution) were reviewed. Three patients had bowel obstruction and underwent abdominal multislice computed tomography (MSCT). Based on CT findings consistent with internal hernia, surgery was performed and the presence of Petersen's hernia was confirmed. Knowledge of the surgical technique, anatomical changes and possible complications is very useful for diagnosing the cause of abdominal pain in patients who underwent gastric bypass. MSCT provides information on extraluminal structures and its high spatial resolution allows for better visualization of both anatomical changes and probable complications of gastric bypass.

Palabras clave : Bariatric surgery; Gastric bypass; Bowel obstruction; Hernia.

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