Renal hydatid infection

Renal hydatid infection is extremely rare manifestation of hydatid disease.

For a general discussion, and for links to other system specific manifestations, please refer to the article on hydatid disease

Renal hydatid infection is seen in less than 5% of patients with hydatid disease 1.

Clinical manifestations are variable, and have polymorph symptomatology which is rarely specific 3. Hydaturia is a pathognomonic sign of renal hydatidosis and results from the rupture of a hydatid cyst into the collecting system 1.

Infection is caused by a parasitic zoonosis with the Echinococcus tape worm. The kidneys are the most commonly affected urinary organs, but bladder, prostate, seminal vesicles and testis can also be involved 2.

The plain x-ray may show a soft-tissue mass or a ring-shaped calcification in the renal region.

May demonstrate caliceal distortion, caliectasis and a non-functioning  kidney, possibly caused by the mass effect of cystic lesions.

 May show anechoic lesions with well-defined margins.

CT is more accurate and sensitive 2,and shows a unilocular or multilocular cysts with or without peripheral calcifications 1. CT may also show a detached membrane, a multiloculated cyst with mixed internal density, and daughter cysts with lower density than the maternal matrix 2.

The surgical approach remains the treatment of choice; particularly using laparoscopy and the resection should be mostly conservative 3.

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Article information

rID: 21847
System: Urogenital
Synonyms or Alternate Spellings:
  • Renal hydatid infections
  • Renal hydatid cyst
  • Renal hydatid cysts

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