Rana, ASingh, MJha, RVerma, S2026-07-232026-07-231999https://hdl.handle.net/20.500.14572/7044Abstract Puerperal haematoma occurs in 1/300 to 1/1500 deliveries. A characteristic presentation of post-delivery collapse with signs of internal haemorrhage and clinically palpable left-sided pelvic mass causing gross hydronephrosis on ipsilateral side was confirmed as a case of retroperitoneal haematoma on ultrasound, which resolved completely on conservative management. Keywords: puerperal haematoma, retroperitoneal haematoma, post-delivery collapseen-USpuerperal haematomaretroperitoneal haematomapost-delivery collapseArticle