Ultrasound images Haemo-hydronephrosis

Blood within the dilated PCS may be due to trauma or other local or semilocal pathological processes such as infection or tumour. It is not usually possible to determine whether obstruction is caused by a blood clot or whether the blood is the result of an obstructing lesion which is also causing bleeding. Renal colic as a result of obstruction by a blood clot in the absence of trauma or blood dyscrasia must naturally be thoroughly investigated to exclude an underlying lesion.
Like pyonephrosis, low-level echoes may be seen on ultrasound within the collecting system (Fig. 7.13B). Although ultrasonically it is not possible to differentiate pyo- from haemohydronephrosis, the clinical picture can be suggestive of one or the other.
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ultrasound images A hyperechoic blood clot can be seen within the collecting system of this dilated kidney.
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