Is it common to have an abscess after a splenectomy?

No, but can occur: Abscess or fluid collections after splenectomy are not that common, but do occur. If the person having the splenectomy has a hematologic or immune disorder (leukemia, myelofibrosis, etc.), or if the spleen is very enlarged before surgery, then the risks are increased for post-operative infections.

Splenectomy complic.: Postop complications following splenectomy can occur. Most common complications include wound infections. Abscesses may form in the site of the splenectomy. Injury to the tail of the pancreas may also occur resulting in pancreatitis or pancreatic fistula. Postoperative abscess is much less common following laparoscopic splenectomy than an open procedure.