background: rhabdomyosarcoma (rms) is one of the common malignant tumors in infants and children, but it is extremely rare in the kidney. in this paper, we present a case of rms the kidney of a child. case presentation: a 6-month old girl presented with agitation, low fever and abdominal distention which started 5 days ago. on physical examination, the infant had a large and firm soft tissue ma...