The role of ultrasonography and other aids in the diagnosis of experimental surgical unilateral hydronephrosis of dogs

Abstract EN

This study was carried out on 10 dogs were allotted into two groups, the first included 5 dogs subjected to experimentally- induced unilateral hydronephrosis, while the second represented by 5 dogs (Sham operated dogs) as a surgical control.

These dogs were subjected to clinical, haematological and urine examinations.

Also Biochemical analysis of serum collected from these dogs was carried out.

These dogs were examined ultrasonographically.

Also, postmortem and histopathological examinations were carried out on kidneys of necropsies dogs.

Results of this study can be summarized as follow.

Clinical examinations of dogs with surgical unilateral hydronephrosis showed intense lumbar pain at one week then dogs showed no symptoms but the enlarged left kidney could be palpated.

Haematological examinations indicated significant increase of PCV%, WBCs and neutrophil %, while significant decrease of lymphocyte % and monocyte %.

Biochemical analysis of serum of dogs with unilateral hydronephrosis showed significant decrease of albumin, total proteins and sodium, while significant increase of urea and creatinine.

Urine examination for dogs with surgical unilateral hydronephrosis revealed that urine pH was decreased after 20 days post- operative.

The specific gravity was decreased after 5 days post- operation.

Protein, Bilirubin and haemat-uria were detected after 5 days post- operative.

Ultrasonographic examinations for dogs with surgical unilateral hydronephrosis showed that left kidney size was increased and distended with fluid parenchyma became compressed and lost its normal architecture.

Post–mortem examination of kidneys revealed dilatation of ureter and enlargement of left kidney that filled with urine.

Microscopically revealed cystic dilatation of renal tubules and flattening of their lining epithelium.

Degeneration of the lining epithelium of some renal tubules with pres-ence of hyaline casts.