PMID- 23217878 OWN - NLM STAT- MEDLINE DCOM- 20130628 LR - 20121211 IS - 1531-5037 (Electronic) IS - 0022-3468 (Linking) VI - 47 IP - 12 DP - 2012 Dec TI - Relapse of unilateral favorable histology Wilms' tumor: significant clinicopathological factors. PG - 2210-5 LID - S0022-3468(12)00712-9 [pii] LID - 10.1016/j.jpedsurg.2012.09.010 [doi] AB - PURPOSE: To evaluate the clinicopathological features that indicate relapse and suggest a new risk based therapeutic strategy for unilateral Favorable Histology Wilms Tumor (FH-WT). MATERIALS & METHODS: Thirty-three patients with unilateral WT were treated in two institutions between 1986 and 2010. Twenty-eight patients with FH-WT received primary nephrectomy according to the National Wilms' Tumor Study (NWTS) or the Japanese Wilms' Tumor Study (JWiTS) protocol. Retrospective analyses of the non-relapsed group (n=23) and the relapsed group (n=5) compared age, gender, tumor laterality, tumor weight, initial tumor stage, known histological subtype, chemotherapy (2 or 3 drugs), and any irradiation delivered. Stages and histological subtypes of the tumors were re-evaluated according to the Japanese staging system. RESULTS: Five of the twenty-eight tumors relapsed, and one patient died. The initial staging (P=0.029) and the histological subtype (P=0.003) were the only factors indicating relapse. Nine of the twenty-three tumors were histologically classified as blastemal predominant subtype (BPT-WT). Five relapsed. CONCLUSION: According to the basic Japanese therapeutic strategy, all patients underwent a primary nephrectomy before chemotherapy. This study suggests that the histological subtype pre-treatment "BPT-WT" should be included as a strong indicator of poor prognosis. Such patients should be treated as a high-risk group. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Aoba, Takeshi AU - Aoba T AD - Department of Pediatric Surgery, Shizuoka Children's Hospital, Shizuoka, Japan. t2aoba@marianna-u.ac.jp FAU - Urushihara, Naoto AU - Urushihara N FAU - Fukumoto, Koji AU - Fukumoto K FAU - Furuta, Shigeyuki AU - Furuta S FAU - Fukuzawa, Hiroaki AU - Fukuzawa H FAU - Mitsunaga, Maki AU - Mitsunaga M FAU - Watanabe, Kentaro AU - Watanabe K FAU - Yamoto, Masaya AU - Yamoto M FAU - Miyake, Hiromu AU - Miyake H FAU - Koyama, Mariko AU - Koyama M FAU - Iwabuchi, Hideto AU - Iwabuchi H FAU - Koike, Junki AU - Koike J FAU - Tatsunami, Shinobu AU - Tatsunami S FAU - Wakisaka, Munechika AU - Wakisaka M FAU - Kitagawa, Hiroaki AU - Kitagawa H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Pediatr Surg JT - Journal of pediatric surgery JID - 0052631 SB - IM MH - Antineoplastic Combined Chemotherapy Protocols/administration & dosage MH - Biopsy, Needle MH - Chemotherapy, Adjuvant MH - Child, Preschool MH - Cohort Studies MH - Combined Modality Therapy MH - Disease-Free Survival MH - Female MH - Follow-Up Studies MH - Humans MH - Immunohistochemistry MH - Infant MH - Japan MH - Kidney Neoplasms/mortality/*pathology/*therapy MH - Male MH - Neoplasm Invasiveness/pathology MH - Neoplasm Recurrence, Local/mortality/*pathology/therapy MH - Neoplasm Staging MH - Nephrectomy/*methods/mortality MH - Retrospective Studies MH - Risk Assessment MH - Survival Rate MH - Treatment Outcome MH - Wilms Tumor/mortality/*pathology/*therapy EDAT- 2012/12/12 06:00 MHDA- 2013/07/03 06:00 CRDT- 2012/12/11 06:00 PHST- 2012/08/26 00:00 [received] PHST- 2012/09/01 00:00 [accepted] PHST- 2012/12/11 06:00 [entrez] PHST- 2012/12/12 06:00 [pubmed] PHST- 2013/07/03 06:00 [medline] AID - S0022-3468(12)00712-9 [pii] AID - 10.1016/j.jpedsurg.2012.09.010 [doi] PST - ppublish SO - J Pediatr Surg. 2012 Dec;47(12):2210-5. doi: 10.1016/j.jpedsurg.2012.09.010.