Long-term follow-up of infantile Wilms tumor treated according to International Society of Pediatric Oncology protocol: seven years' follow-up.
OBJECTIVE
To report the long-term follow-up of patients with infantile Wilms tumor treated according to the International Society of Pediatric Oncology study 9 protocol.


METHODS
We retrospectively reviewed our medical reports for diagnosed WT in patients aged 6-12 months from January 2001 to January 2009. The clinical presentation, stage, operative details, pathologic findings, and outcomes for these infants were analyzed. We reviewed the charts of these patients throughout the whole disease course through long-term follow-up, paying particular attention to the details of the clinical presentation, stage at presentation versus postoperative stage, intraoperative findings, pathologic findings, and outcomes.


RESULTS
The records revealed 16 patients with a median age of 7.5 months. All patients had presented with an abdominal mass, and 25% had presented with abdominal pain and hematuria. Associated congenital anomalies were observed in 16.7% of the patients. A favorable histologic type was found in 91.7% of the patients and 8.3% had an unfavorable histologic type. The median follow-up period was 57 months. Postoperative complete remission was achieved in all patients who underwent surgery. Relapse developed in 1 patient. The 7-year disease-free survival rate was 93.8%, and the 7-year overall survival rate was 75%.


CONCLUSIONS
The long-term follow-up data using the International Society of Pediatric Oncology study 9 protocol revealed good outcomes. The protocol was a safe and an effective line of therapy, associated with decreased morbidity and improved survival. Also, the reduction in tumor volume resulted in easier surgical procedures, with no intraoperative complications.
Department of Pediatric Oncology, South Egypt Cancer Institute, Assuit University, Assiut, Egypt.
Heba Abdel Razik
HA
Sayed
Amany Mohamed
AM
Ali
Hesham Mahmoud
HM
Hamza
Medhat Ahmed
MA
Abdalla
D002985:Clinical Protocols; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007680:Kidney Neoplasms / Q000628:therapy*; D008297:Male; D017410:Practice Guidelines as Topic; D012189:Retrospective Studies; D013997:Time Factors; D009396:Wilms Tumor / Q000628:therapy*