Desmoid Fibromatosis in Pediatric Patients: Management Based on a Retrospective Analysis of 59 Patients and a Review of the Literature

Background. Only limited data are available concerning desmoid tumor in children. Methods. Fifty-nine children and adolescents with desmoid tumor treated in 2 French cancer centers with a very long followup were retrospectively reviewed. Results. Median age was 6 years (range, 0–15). Tumors mainly involved the limbs (42%). Five cases occurred in a context of genetic disorder. Surgery was first-line treatment in 80% of cases. Resection was microscopically complete in 3 patients (pts), with a microscopic residue in 19 pts and a macroscopic residue in 35 cases. Various adjuvant therapies were used. Overall response to all systemic therapies was 33%. Thirty-eight patients developed one or more recurrences or progressions. After a median followup of 8.5 years, 34 patients were alive in complete remission (CR), including 16 first CR. Seven patients died, 6 from refractory disease and 1 from colorectal carcinoma in a genetic context. Ten-year progression-free survival (PFS) and overall survival were 31% and 88%, respectively. In univariate analysis, age less than 10 years and head-neck site were favorable prognostic factors for PFS. Conclusions. When surgery is required, surgical margins must be negative. Low-dose chemotherapy can be proposed as adjuvant therapy. Prospective trials must be developed to evaluate long-term response and side effects

TRAITEMENT DU SARCOME D'EWING METASTATIQUE (ANALYSE DES DONNEES DES ETUDES MULTICENTRIQUES FRANCAISES EW88 ET EW93 (DES PEDIATRIE))

PARIS5-BU Méd.Cochin (751142101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Dose–Effect Relationship of Alkylating Agents on Testicular Function in Male Survivors of Childhood Lymphoma

<div><p>The purpose of our study was to assess the gonadal function in male survivors of childhood lymphoma. We studied 171 male survivors of childhood lymphoma (83 with B-cell non-Hodgkin lymphoma [B-NHL], 32 with T-cell non-Hodgkin lymphoma [T-NHL], 50 with Hodgkin lymphoma [HL], and 6 with anaplastic large-cell lymphoma [ALCL]), measuring follicle-stimulating hormone [FSH] and luteinizing hormone [LH] levels at a median age of 21.1 (17–30.4) years after a median delay of 9.3 (2–22.4) years from treatment. FSH levels were above normal range (≥10 IU/L) in 42.1% and LH levels ≥8 IU/L in only 8.9% of survivors. In multivariate analysis, only the following chemotherapeutic agents were associated with higher FSH or LH levels: cyclophosphamide (<i>P</i> < .0001, .04), lomustine (CCNU; <i>P</i> = .002, 0.04), and procarbazine (<i>P</i> < .0001, .07). No significant correlation was found between FSH or LH levels and age or pubertal status at diagnosis. Mean FSH level was significantly lower in NHL survivors treated more recently: 6 ± 5.1 IU/L in B-NHL survivors treated since 1986 versus 12.3 ± 5.4 IU/L for those treated before 1981 (<i>P</i> = .0001), and 6.8 ± 9.6 IU/L in T-NHL survivors treated since 1989 versus 9.4 ± 5.7 IU/L for those treated before 1989 (<i>P</i> = .035). In HL, mean FSH level was 12.4 ± 9.9 IU/L following procarbazine containing chemotherapy versus 3.4 ± 1.9 IU/L in the absence of procarbazine and increased significantly with the number of MOPP/OPPA (mechlorethamine, Oncovin [vincristine], procarbazine, and prednisone/Oncovin, procarbazine, and prednisone, and Adriamycin [doxorubicin]) courses received, from 6.8 ± 5.7 IU/L for 1–2 MOPP/OPPA to 12.6 ± 7.5 for 3–4 MOPP/OPPA and 19.6 ± 13.3 for more than 4 MOPP/OPPA (<i>P</i> for trend = .006). Testicular toxicity of alkylating agents on childhood lymphoma survivors is dose dependent and not correlated to diagnosis, age, or pubertal status at diagnosis.</p></div