Table 2 The CT differences between AMF and germ cell tumors
From: Giant angiomyofibroblastoma of the scrotum: a case report and review of the literature
Identify the key points | AMF | Germ cell tumors |
|---|---|---|
The CT scan characteristics | Most tumors often appear as well-defined soft tissue masses with uniform or uneven density, and the enhancement scans show light to moderate enhancement, and the degree of enhancement is related to the vascular component within the tumor. Low-density areas were seen in some tumors, with mucus degeneration or cystic change | CT findings of different types of germ cell tumors. Teratoma shows fat, calcification, soft tissue and characteristic fat density; seminoma is a uniform soft tissue density mass; endodermal sinus tumor is often a large mass, accompanied by necrosis and hemorrhage |
The MRI scan characteristics | It showed more equal signals on T 1 WI and high signals on T 2 WI, and the signal intensity was related to the proportion of cells, collagen fibers and mucus components within the tumor. The enhancement was mild early in the enhanced scan and increased in the delayed phase. If there is bleeding in the tumor, each sequence of signal performance is related to the bleeding time | Teratoma showed mixed signals in the MRI sequence, adipose components showed high signal in T 1 WI and T 2 WI, and the signal decreased; seminoma T 1 WI showed equal signal, T 2 WI showed slightly higher signal, and enhanced enhancement was less than that of normal testicular tissue; endoderoma T 1 WI and T 2 WI showed high signal, and uneven enhancement |
Pathway of growth | It usually grows expansively with clear boundaries and a clear demarcation from surrounding tissues, with less invasion of surrounding tissues | The growth mode is diverse, some show expansion growth, some can show invasive growth, such as malignant germ cell tumors can invade the surrounding tissues and structures, and the surrounding tissues are unclear demarcation |
D reg | It is commonly found in the female vulva and vagina, but can also occur in other pelvic sites | Good hair in the pineal area, supraslar area, testis, ovary and other gonads and body midline, such as mediastinal, sacral tail, etc |