Spontaneous and traumatic intra-peritoneal perforations of hepatic hydatid cysts: a case series.

Little is known about the presentation, management, outcome, and recurrence of hydatid cyst perforations. We reviewed the charts of all patients admitted to our emergency service for 7 years to identify patients who were surgically treated for intra-peritoneal hydatid cyst perforations. Twelve hydatid cysts were identified in 7 patients (5 males; median age 22 yr; range 8-67). The perforations occurred spontaneously in 5 patients, and were the result of mild trauma in 2 patients. Diagnostic tools included ultrasound (US, n = 4), computed tomography (CT, n = 3), and diagnostic peritoneal lavage (DPL, n = 1). The cysts were treated with radical (n = 3) or conservative (n = 9) operative techniques. Intra-cavitary and intra-abdominal spaces were washed in 6 and 5 patients, respectively. The median follow-up time was 41 months (range 3-58). Indirect hemagglutination test was positive in 3 patients, but CT confirmed cyst recurrence in only 2 of these patients. Both had had large cysts and had undergone conservative therapy (endocystectomy and external drainage). An intra-abdominal recurrence was observed in a patient whose abdomen had not been washed during surgery. In conclusion, patients with hydatid cyst perforations in our study generally presented with severe abdominal findings. US, CT, and DPL may be helpful for the diagnosis. Recurrence may be related to operative technique, location of the cyst, and abdominal wash during the surgery.