What would cause free pelvic fluid and slightly prominent bilateral lymph more on left side in a 3 year old female?

Free pelvic fluid can be caused by conditions such as bowel perforation, ascites, urinary tract obstruction, trauma, peritonitis, abdominal abscesses, bleeding disorders, and conditions associated with increased abdominal pressure.

Slightly prominent bilateral lymph nodes, more on the left side, can be indicative of an underlying infection or inflammation in that area. This can be due to conditions such as viral or bacterial infections, tonsillitis, pharyngitis, otitis media, dental infections, or lymphadenitis. Depending on the exact location of the lymph nodes and other associated symptoms, further evaluation and diagnostic tests may be necessary to determine the exact cause.