|
1
|
Cho SJ, Ranganathan S, Alaggio R, Maibach R, Tanaka Y, Inoue T, Leuschner I, de Krijger R, Vokuhl C, Krailo M, Malogolowkin M, Meyers R, Czauderna P, Hiyama E, Ansari M, Morland B, Trobaugh-Lotrario A, O'Neill AF, Rangaswami A, Häberle B, López-Terrada D. Consensus classification of pediatric hepatocellular tumors: A report from the Children's Hepatic tumors International Collaboration (CHIC). Pediatr Blood Cancer 2023:e30505. [PMID: 37384428 DOI: 10.1002/pbc.30505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 05/15/2023] [Accepted: 06/02/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND Liver tumors are rare in children with histologic heterogeneity that makes diagnosis challenging. Systematic histopathological review, performed as part of collaborative therapeutic protocols, identified relevant histologic subtypes that are important to distinguish. The Children's Hepatic tumors International Collaboration (CHIC) was established to study pediatric liver tumors on a global scale and led to establishment of a provisional consensus classification for use in international clinical trials. The current study is the validation of this initial classification and first large-scale application by international expert reviewers. PROCEDURE The CHIC initiative includes data from 1605 children treated on eight multicenter hepatoblastoma (HB) trials. Review of 605 available tumors was performed by seven expert pathologists from three consortia (US, EU, Japan). Cases with discordant diagnoses were collectively reviewed to reach a final consensus diagnosis. RESULTS Of 599 cases with sufficient material for review, 570 (95.2%) were classified as HB by all consortia, and 29 (4.8%) as non-HB, which included "hepatocellular neoplasm, NOS" and malignant rhabdoid tumors. 453 of 570 HBs were classified as epithelial by final consensus. Some patterns (i.e., small cell undifferentiated, macrotrabecular, cholangioblastic) were selectively identified by reviewers from different consortia. All consortia identified a similar number of mixed epithelial-mesenchymal HB. CONCLUSIONS This study represents the first large-scale application and validation of the pediatric malignant hepatocellular tumors consensus classification. It is a valuable resource to train future generations of investigators on accurate diagnosis of these rare tumors and provides a framework for further international collaborative studies and refinement of the current classification of pediatric liver tumors.
Collapse
Affiliation(s)
- Soo-Jin Cho
- Department of Pathology, University of California San Francisco, San Francisco, California, USA
| | - Sarangarajan Ranganathan
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Rita Alaggio
- Department of Pathology, Bambino Gesu Pediatric Hospital, Roma, Italy
| | | | - Yukichi Tanaka
- Department of Pathology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Takeshi Inoue
- Department of Pathology, Osaka City General Hospital, Osaka, Japan
| | - Ivo Leuschner
- UNI-Klinikum Campus, Institut fur Pathologie, Kiel, Germany
| | - Ronald de Krijger
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - Christian Vokuhl
- Section of Pediatric Pathology, Department of Pathology, University Hospital Bonn, Bonn, Germany
| | - Mark Krailo
- Department of Preventive Medicine, University of Southern California, Los Angeles, California, USA
| | - Marcio Malogolowkin
- Division of Pediatric Hematology Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, California, USA
| | - Rebecka Meyers
- Division of Pediatric Surgery, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Piotr Czauderna
- Department of Surgery and Urology for Children and Adolescents, Medical University of Gdansk, Gdansk, Poland
| | - Eiso Hiyama
- Department of Pediatric Surgery, Hiroshima University, Hiroshima, Japan
| | - Marc Ansari
- Division of Pediatric Oncology and Hematology, Department of Women, Child and Adolescent, University Geneva Hospitals, Geneva, Switzerland
- Faculty of Medicine, Department of Pediatrics Cansearch Research Platform for Pediatric Oncology and Hematology, Gynecology and Obstetrics, University of Geneva, Geneva, Switzerland
| | - Bruce Morland
- Department of Oncology, Birmingham Women's and Children's Hospital, Birmingham, UK
| | - Angela Trobaugh-Lotrario
- Department of Pediatric Hematology/Oncology, Providence Sacred Heart Children's Hospital, Spokane, Washington, USA
| | - Allison F O'Neill
- Department of Pediatric Oncology, Dana-Farber Cancer Institute/Boston Children's Cancer and Blood Disorders Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Arun Rangaswami
- Division of Pediatric Hematology and Oncology, University of California San Francisco, San Francisco, California, USA
| | - Beate Häberle
- Department of Pediatric Surgery, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Dolores López-Terrada
- Department of Pathology and Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, USA
| |
Collapse
|