[Aniridia and Wilms tumor: 2 cases of fetal rhabdomyomatous nephroblastoma].
BACKGROUND
Wilms tumor is associated in 7 to 10% of patients with congenital abnormalities. Among those, aniridia is the most constant feature of the WAGR syndrome that includes, in one third of cases. Wilms tumor. We report two cases of aniridia associated with fetal rhabdomyomatous nephroblastoma.


METHODS
Case 1. A one-year old girl with congenital aniridia was admitted for macroscopic hematuria. Abnormal ultrasonography and tomodensitometry revealed a large, bilateral, kidney tumor. The patient was given actinomycin and vincristine, without efficacy. Bilateral tumorectomy was performed 6 months later and the histological study showed a fetal rhabdomyomatous nephroblastoma. This patient is in remission at the age of 5. Case 2. A boy, also with congenital aniridia, presented with macroscopic hematuria at the age of 2 years revealing a nephroblastoma located on his right kidney. Preoperative chemotherapy remained uneffective and the nephrectomy performed 1 month later permitted the diagnosis of fetal rhabdomyomatous nephroblastoma. The patient is well 4 years later.


CONCLUSIONS
Both cases of fetal rhabdomyomatous nephroblastoma, a histological variant of Wilms tumor, seem to be the first reported in the WAGR syndrome.
Schneider
P
P
Service de pédiatrie et génétique médicale, hôpital Charles-Nicolle, Rouen, France.
Drouin-Garraud
V
V
Bachy
B
B
Brasseur
G
G
Lahsinat
K
K
Hemet
J
J
Vannier
J P
JP
Tron
P
P
D015783:Aniridia / Q000150:complications*; D005260:Female; D006801:Humans; D007223:Infant; D007680:Kidney Neoplasms / Q000150:complications* / Q000473:pathology / Q000628:therapy; D008297:Male; D012207:Rhabdomyoma / Q000473:pathology*; D017624:WAGR Syndrome / Q000175:diagnosis; D009396:Wilms Tumor / Q000150:complications* / Q000473:pathology / Q000628:therapy