Late computed tomography scan response improvement and gallium scintigraphy evaluation as on-treatment prognostic parameters to tailor treatment intensity in patients with Hodgkin's lymphoma. A prospective phase II study

Annals of Oncology : Official Journal of the European Society for Medical Oncology
A ReG Rossi

Abstract

Tailoring treatment intensity is critical in Hodgkin's lymphoma (HL). Ongoing prognostic parameters may be an useful adjunct to pretreatment stratification. We used the kinetics of computed tomography (CT) scan response and residual gallium (Ga)-67 uptake to better stratify risk. Patients received 4-8 adriamycin, bleomycin, vinblastine and dacarbazine courses according to stage. Disease was reassessed evaluating late computed tomography scan response improvement (CTRI) and Ga-67 uptake. Patients received no further treatment, radiotherapy (RT) or additional chemotherapy + RT according to the presence of none (low risk), one (intermediate risk) and both parameters (high risk). Patients with bulky mediastinum received RT anyhow. Among 102 assessable patients, 35 showed late CTRI and 9 residual Ga-67 uptake. In 30 patients with bulky mediastinum, the 3-year progression-free survival (PFS) was significantly better when neither parameter was present (100% versus 69%; P = 0.02). In 72 patients without bulky mediastinum, treatment was tailored according to risk assignment. Relapses occurred in 5 of 47 low-risk and 3 of 21 intermediate-risk patients, with no differences between the two groups, and in 3 of 4 high-risk patients. This stu...Continue Reading

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