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12th Congress of the European Hematology ... - Haematologica

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12 th <strong>Congress</strong> <strong>of</strong> <strong>the</strong> <strong>European</strong> <strong>Hematology</strong> Association<br />

III by international staging system (ISS). PET/CT was performed at initial<br />

diagnosis and 7th day after 1st chemo<strong>the</strong>rapy (D7), respectively. The<br />

number <strong>of</strong> hypermetabolic lesion (HML), maximum SUV and functional<br />

volume <strong>of</strong> HML with cut <strong>of</strong>f value <strong>of</strong> SUV <strong>of</strong> 2.5 were measured and<br />

<strong>the</strong> changes between 2 time points <strong>of</strong> PET were evaluated. The responses<br />

<strong>of</strong> PET/CT were classified as complete response (CR, >95% reduction<br />

for <strong>the</strong> individual parameters), partial response (PR, >50% reduction),<br />

minimal change (MC, 25% <strong>of</strong> aggravation). The responses on PET/CT were compared with<br />

clinical responses based performance status and laboratory findings. For<br />

<strong>the</strong> clinical responses, 7 patients were assessed at <strong>the</strong> end <strong>of</strong> complete<br />

chemo<strong>the</strong>rapy cycles (5.6±2.4 cycles) and 2 patients at <strong>the</strong> time after 2nd<br />

cycle <strong>of</strong> chemo<strong>the</strong>rapy. Results. The <strong>the</strong>rapeutic responses <strong>of</strong> MM patients<br />

were CR <strong>of</strong> 3, PR <strong>of</strong> 3, MC <strong>of</strong> 1, and PD <strong>of</strong> 2 patients by clinical response<br />

assessments according to EBMT criteria and CR <strong>of</strong> 2, PR <strong>of</strong> 5, MC <strong>of</strong> 1,<br />

and PD <strong>of</strong> 1 patient by D7 PET/CT. The changes for <strong>the</strong> maximum SUV<br />

and functional volume <strong>of</strong> HML had a good correlation with clinical<br />

response (rho=0.695, and rho=0.782, p

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