Heip, my husband was diagnosed with a peritoneal cyst about two years ago, he was rushed into emergency surgery to have it opened to drain. It has recurred at least six more times (lost count) of which 4 required surgery. He has been seen by a surgeon, who quarterized (sp) the last site (between his scrotum and rectum) who suggested he see an gastroenterologist who did a colonoscopy and a cat scan, but found nothing. He in turn recommended he see a dermatologist! All the while this thing is leaking blood/pus and will build up only to open up when he least expects it. We are beside ourselves. Who would you recommend we see to make a diagnosis and solve his problem.