Fusion of single-photon emission computed tomography and computed tomography images of sentinel lymph nodes in extramammary Paget's disease of the scrotum.

We describe a new method for the fusion of single-photon emission computed tomography (SPECT) and multidetector computed tomography (MDCT) images using an acrylic resin marker containing 99 m-Tc phytate and viewing software (Fusion Viewer Version 1.0 for Windows). This method provided the fusion of SPECT and CT images in a short time and made it easy to identify the sentinel lymph nodes in the patient with extramammary Paget's disease of the scrotum.