PMID- 22658515 OWN - NLM STAT- MEDLINE DCOM- 20130317 LR - 20130114 IS - 1879-355X (Electronic) IS - 0360-3016 (Linking) VI - 85 IP - 2 DP - 2013 Feb 1 TI - Outcomes of patients with revised stage I clear cell sarcoma of kidney treated in National Wilms Tumor Studies 1-5. PG - 428-31 LID - S0360-3016(12)00570-6 [pii] LID - 10.1016/j.ijrobp.2012.04.023 [doi] AB - PURPOSE: To report the clinical outcomes of children with revised stage I clear cell sarcoma of the kidney (CCSK) using the National Wilms Tumor Study Group (NWTS)-5 staging criteria after multimodality treatment on NWTS 1-5 protocols. METHODS AND MATERIALS: All CCSK patients enrolled in the National Wilms Tumor Study Group protocols had their pathology slides reviewed, and only those determined to have revised stage I tumors according to the NWTS-5 staging criteria were included in the present analysis. All patients were treated with multimodality therapy according to the NWTS 1-5 protocols. RESULTS: A total of 53 children were identified as having stage I CCSK. All patients underwent primary surgery with radical nephrectomy. The chemotherapy regimens used were as follows: regimen A, C, F, or EE in 4 children (8%); regimen DD or DD4A in 33 children (62%); regimen J in 4 children (8%); and regimen I in 12 children (22%). Forty-six patients (87%) received flank radiation therapy (RT). Seven children (13%) did not receive flank RT. The median delay between surgery and the initiation of RT was 9 days (range, 3-61). The median RT dose was 10.8 Gy (range, 10-36). The flank RT doses were as follows: 10.5 or 10.8 Gy in 25 patients (47%), 11-19.9 Gy in 2 patients (4%), 20-29.9 Gy in 9 patients (17%), and 30-40 Gy in 10 patients (19%). The median follow-up for the entire group was 17 years (range, 2-36). The relapse-free and cancer-specific survival rate was 100% at the last follow-up examination. CONCLUSIONS: The present results have demonstrated that children with revised stage I CCSK using the NWTS-5 staging criteria have excellent survival rates despite the use of varying RT doses and chemotherapy regimens in the NWTS 1-5 protocols. CI - Copyright (c) 2013 Elsevier Inc. All rights reserved. FAU - Kalapurakal, John A AU - Kalapurakal JA AD - Northwestern University, Chicago, Illinois, USA. j-kalapurakal@northwestern.edu FAU - Perlman, Elizabeth J AU - Perlman EJ FAU - Seibel, Nita L AU - Seibel NL FAU - Ritchey, Michael AU - Ritchey M FAU - Dome, Jeffrey S AU - Dome JS FAU - Grundy, Paul E AU - Grundy PE LA - eng GR - CA-42326/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20120601 PL - United States TA - Int J Radiat Oncol Biol Phys JT - International journal of radiation oncology, biology, physics JID - 7603616 SB - IM MH - Adolescent MH - Antineoplastic Combined Chemotherapy Protocols/therapeutic use MH - Child MH - Child, Preschool MH - Combined Modality Therapy/adverse effects/methods MH - Disease-Free Survival MH - Female MH - Follow-Up Studies MH - Humans MH - Infant MH - Kidney Neoplasms/mortality/pathology/*therapy MH - Male MH - Neoplasm Staging/methods MH - Neoplasms, Second Primary/etiology MH - Nephrectomy/methods MH - Radiotherapy/methods MH - Radiotherapy Dosage MH - Sarcoma, Clear Cell/mortality/pathology/*therapy MH - Survival Rate MH - Treatment Outcome MH - Young Adult EDAT- 2012/06/05 06:00 MHDA- 2013/03/19 06:00 CRDT- 2012/06/05 06:00 PHST- 2012/03/19 00:00 [received] PHST- 2012/04/11 00:00 [revised] PHST- 2012/04/12 00:00 [accepted] PHST- 2012/06/05 06:00 [entrez] PHST- 2012/06/05 06:00 [pubmed] PHST- 2013/03/19 06:00 [medline] AID - S0360-3016(12)00570-6 [pii] AID - 10.1016/j.ijrobp.2012.04.023 [doi] PST - ppublish SO - Int J Radiat Oncol Biol Phys. 2013 Feb 1;85(2):428-31. doi: 10.1016/j.ijrobp.2012.04.023. Epub 2012 Jun 1.