Primary mediastinal germ-cell tumors (GCTs) without gonadal involvement are rare and can be divided into benign mature teratoma and malignant seminoma or nonseminoma.
Methods X-ray and CT findings of one patient with surgically and pathologically proved benign cementoblastoma(BCB)in left mandibular region were analyzed together with review of the literature.
Results The CT and MRI manifestations of intracranial mixed tumor were exactly like meningioma, glioma, and hypophysoma, etc, therefore it was usually misdiagnosed the common tumor.
Herein, we present an extremely rare case of rectal ameboma associated with amebic liver abscess, which can only be distinguished with great care from rectal cancer with liver metastasis.