peritoneal washing
Diagnostic procedure involving irrigation of the peritoneal cavity to collect fluid for cytological examination.
Full Definition
Peritoneal washing, also known as peritoneal lavage or peritoneal cytology, is a diagnostic procedure performed during gynecologic surgery to detect malignant cells within the peritoneal cavity. The technique involves instilling sterile saline solution into the pelvis and paracolic gutters, gently agitating the abdomen, then collecting the fluid for cytopathological analysis. This procedure is routinely performed during staging operations for ovarian, tubal, and primary peritoneal cancers, as well as during evaluation of suspicious pelvic masses. The presence of malignant cells in peritoneal washings can upstage certain cancers and influence treatment decisions, including the need for adjuvant chemotherapy.
Usage
Usage note: Specify timing relative to tumor manipulation; distinguish from therapeutic procedures.
In Context
- "Peritoneal washings were obtained prior to tumor manipulation during staging laparotomy." — oncologic procedure
- "Cytology from peritoneal washing revealed no malignant cells, confirming early-stage disease." — pathology report