Osteosarcomas in retinoblastoma-survivors. A report of 28 affected patients from the Cooperative Osteosarcoma Study Group (COSS)

Bielack SS, Baumhoer D, Hecker-Nolting S, Hettmer S, Kager L, Ketteler P, Kevric M, Kratz CP, Kühne T, Mettmann V, Metzler M, Reinhardt D, Sorg B, Blattmann C (2024)


Publication Type: Journal article

Publication year: 2024

Journal

Book Volume: 3

Article Number: 100158

DOI: 10.1016/j.ejcped.2024.100158

Abstract

Purpose: Many publications address the epidemiology of secondary osteosarcomas following retinoblastoma. Treatment- and outcome-related information is, however, scarce. We used a large cooperative group's database to study this issue. Patients and methods: The database Cooperative Osteosarcoma Study Group COSS was searched for patients with osteosarcoma following a previous retinoblastoma. Patients were then analyzed for demographic factors, local/systemic treatments received, and outcomes. Results: 28 eligible patients were identified. Median age at retinoblastoma was.5 years, 89% occurred bilaterally. Retinoblastoma-therapy was by surgery in 26/27, radiotherapy in 26/27, chemotherapy in 10/26 (rest unknown). Osteosarcoma was diagnosed after 13.7 (3.1 – 36.1) years, extremities and head/neck affected in 14/28, each. Four/28 patients had primary metastases. Osteosarcoma treatment included chemotherapy in all cases, local therapy surgery in 27/28. Histological response was good in 9/16 evaluable cases. Surgery of all sites was macroscopically complete in 23/27 operated tumors and microscopically complete in 17/26 (1 unknown). Radiotherapy was administered to 3 craniofacial tumors. Median follow-up was 3.5 (.4 – 30.1) years from osteosarcoma diagnosis, 8/28 patients remaining event-free. Altogether, five patients suffered further secondary malignancies. Actuarial overall and event-free survival at 2 and 5 years from osteosarcoma were 73% (standard error: 8%) / 50% (10%) and 47% (10%) / 22% (9%), respectively. Conclusion: This comparatively large cohort of osteosarcomas after retinoblastoma proves that the latter may be treated curatively. While their prognosis is far worse than that of primary osteosarcomas, partly due to a predilection for craniofacial involvement, selected patients may still become long-term survivors with appropriate therapies.

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APA:

Bielack, S.S., Baumhoer, D., Hecker-Nolting, S., Hettmer, S., Kager, L., Ketteler, P.,... Blattmann, C. (2024). Osteosarcomas in retinoblastoma-survivors. A report of 28 affected patients from the Cooperative Osteosarcoma Study Group (COSS). EJC Pediatric Oncology, 3. https://doi.org/10.1016/j.ejcped.2024.100158

MLA:

Bielack, Stefan S., et al. "Osteosarcomas in retinoblastoma-survivors. A report of 28 affected patients from the Cooperative Osteosarcoma Study Group (COSS)." EJC Pediatric Oncology 3 (2024).

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