Hidroureteronefrosis secundaria a un granuloma por probable cuerpo extraño en el muñón uterino tras una ovariohisterectomía en una perra

Resumen

A 2-year-old neutered bitch was presented with haematuria. An abdominal ultrasound was performed. A heterogeneous mass with a central hyperechoic area with acoustic shadow caudal to the bladder and ventral to the colon was observed. Cytology of the mass revealed a non-septic inflammatory process. The most likely diagnosis was a foreign body granuloma of the uterine stump, due to the use of silk for pedicle ligation, which was excised. One year later, the patient presented pollakiuria. A mass similar in appearance to the one seen in the previous ultrasound was observed, in addition to left hydronephrosis and hydroureter. A Computed Tomography scan was performed. In addition to the ultrasonographic findings, adhesions of the mass to the right ureter were visualized. Treatment included a left kidney nephrectomy. Three months later, the patient presented with lethargy and vomiting. Ultrasound examination revealed a mass with similar characteristics to the previous ultrasound exams, as well as right hydronephrosis and hydroureter. Due to the poor prognosis, euthanasia was recommended. In conclusion, hydroureteronephrosis secondary to foreign body granuloma, caused by the use of non-absorbable ligatures at the ovarian and uterine pedicles during ovariohysterectomy is a rare complication. However, this complication is possible and should be taken into account in patients with these clinical signs. The use of non-absorbable material as ligatures should be avoided.