This is the report of an 18-year-old patient with a large abdominoscro
tal hydrocele (ASH) and secondary hydroureteronephrosis on the right s
ide resulting from contiguous pressure for several months. The literat
ure review revealed hydronephrosis to be the most frequent complicatio
n of ASH. The diagnosis is established by magnetic resonance imaging o
r computerized tomography. Complete surgical excision through a groin
incision is recommended. After removal, healing is usually complete, i
ncluding regression of the hydroureteronephrosis.