The ventriculoperitoneal shunt placement procedure is common throughout the world, with a prevalence of approximately 30,000 procedures per year in the United States (5). However, the rate of complications is still important and must be remembered, with a percentage of 11 to 25% after the first year of implantation. Abdominal complications are described in 5–47% of the cases (6), and the abdominal pseudocyst is one of them. We present the case of a patient colonized by multidrug-resistant bacteria, who underwent exteriorization surgery of a ventriculoperitoneal shunt. Intraoperatively, a blue coloration was observed in the catheter, a phenomenon previously described in urinary infections (1)(2) but not before in pathologies of the central nervous system. Our objective is to present an atypical case of dysfunction of the ventriculoperitoneal shunt, whose diagnosis couldbe evidenced through the coloration of the catheter exteriorized in surgery.

脑室腹腔分流术在世界各地都很常见，在美国每年约有 30,000 例手术 (5)。然而，并发症的发生率仍然很重要，必须记住，植入第一年后的百分比为 11% 至 25%。5-47% 的病例有腹部并发症 (6)，腹部假性囊肿就是其中之一。我们介绍了一名被多重耐药细菌定植的患者的病例，该患者接受了脑室腹膜分流术的外置手术。术中，在导管中观察到蓝色，这种现象以前在泌尿道感染中描述过(1)(2)，但在中枢神经系统病理中未曾描述过。我们的目的是提出脑室腹腔分流功能障碍的非典型病例，其诊断可以通过手术中取出的导管的颜色来证明。