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We present a 4-week-old neonate with acute onset of bloody stools and abdominal distention. Point-of-care ultrasound performed in the emergency department allowed for rapid diagnosis of a large amount of free intra-abdominal fluid, which together with the physical findings, prompted emergent operative exploration revealing chylous ascites. Although no areas of active volvulus were identified intraoperatively, findings in the case were suggestive of small bowel volvulus and deemed as the most likely etiology for this patient's presentation. In this report, we review the relevant aspects of ultrasonography for ascites and discuss the diagnosis of chylous ascites.

Lymphatic complications are uncommon after spinal surgery. Postsurgical collections of lymph may result in chyloma, chylothorax, chylous ascites, or chyloretroperitoneum. Recommended treatment of chylothorax or chylous ascites includes drainage, and a low-fat diet using medium-chain triglyceride or total parenteral nutrition. The only reported case of chyloretroperitoneum concluded with a recommendation for retroperitoneal drainage. The authors present a series of three patients who underwent anterior spinal procedures complicated by retroperitoneal lymphatic injury. All three were treated without retroperitoneal drains, and at follow-up, none has shown any adverse sequelae from this method of treatment. The authors disagree with past recommendations for drainage of the retroperitoneal space because this may prolong drainage and deplete nutrition.

Isolated fetal ascites is an unusual prenatal finding and must be differentiated from immune and nonimmune hydrops. This entity is most commonly associated with gastrointestinal and genitourinary anomalies. Fetal chyloperitoneum, however, should be considered as a possible cause. Pulmonary hypoplasia and abdominal dystocia during attempted vaginal delivery are potential complications. We present a case of isolated fetal ascites due to congenital chyloperitoneum.

The CT findings are presented in a patient with chyloperitoneum and chyloretroperitoneum following blunt trauma to the cysterna chyli. The simultaneous demonstration of both intraperitoneal and extraperitoneal water density fluid appears to be specific for this injury.