Endpoints
Seroma, hematoma, seroma, abscess
ABSCESS, SEROMA, HEMATOMA, SEROMA, COMPLICATIONS
The endpoints were registered during a follow up period of thirty days. The primary endpoint was the presence of a fluid collection on postoperative day 30 (POD 30). All patients underwent an ultrasound to objectively assess the presence or absence of a collection. Collections were subdivided into seroma, hematoma and abscess. Seroma was defined as a subcutaneous fluid collection without a solid component. The hematoma was characterized by the presence of debris, and abscess was confirmed by the presence of pus on a puncture.Secondary endpoints were complications, classified according to Clavien-Dindo classification [