The authors report the case of patient with IgA deficiency presented with a
low-grade renal abscess. Doe to the atypical nature of the clinical featur
es and imaging, the diagnosis was nor established prior to surgery. Despite
radical surgery, the abscess recurred several weeks later In the light of
this case, the authors discuss the various possible diagnoses that must be
considered in the presence of these types of images and the therapeutic app
roach during initial management. They discuss the various immune deficienci
es to be investigated in a particular infectious context.