Combined diagnostic imaging of uterine carcinosarcoma: A case report

The diagnostic imaging characteristics of uterine carcinosarcoma have not b een established because the tumor is very rare. We studied magnetic resonan ce (MR) imaging, power Doppler ultrasonography, and positron emission tomog raphy (PET) in one such carcinosarcoma to define its imaging characteristic s. On T1-weighted MR images, the tumor mass in the uterus was low-signal in tensity and had a slight inhomogeneous appearance. On T2-weighted images, i t had a heterogeneous appearance and was of medium- or high-signal intensit y; marked flow void was apparent from the myometrium to the tumor mass. The MR flow void was also detected by power Doppler ultrasonography. Increased glucose metabolism was detected on PET images, suggesting a malignant tumo r in the endometrial cavity. Combined diagnostic images with MR, power Dopp ler ultrasonography, and PET is recommended as the diagnostic method for ut erine carcinosarcoma.