[Post-traumatic rupture in ureteropelvic junction obstruction syndrome: two case reports]

Post-traumatic rupture of UPJ obstruction is a rare event, with few reported cases in the literature. Diagnosis is suggested on imaging studies, especially US and CT findings. The presence of an anterior pelvic hematoma associated with thinning of kidney parenchyma, very distended pelvis and non dilated ureter is suggestive of pre-existing pathology.