Adipose Tissue Tumors, Stomach
Atypical lipomatous tumor/well differentiated liposarcoma; Dedifferentiated liposarcoma; Lipoma; Myxoid liposarcoma; Pleomorphic liposarcoma
Lipoma is a benign tumor consisting of mature adipocytes.
Atypical lipomatous tumor/well-differentiated liposarcoma is an intermediate malignant tumor consisting of pleomorphic adipocytes and stromal cells with at least focal nuclear atypia.
Dedifferentiated liposarcoma: tumor displaying transition from atypical lipomatous tumor/well-differentiated liposarcoma to other non-adipocytic type mesenchymal tumor with variable malignant grade (sarcoma).
Myxoid liposarcoma is a sarcoma containing variable number of signet-ring lipoblasts and round/oval mesenchymal primitive cells surrounded by a myxoid stroma with delicate arborizing vessels.
Pleomorphic liposarcoma: high-grade sarcoma consisting of variable number of pleomorphic lipoblasts in the absence of atypical lipomatous tumor/well-differentiated liposarcoma features.
References and Further Reading
- Thompson, W. M., Kende, A. I., & Levy, A. D. (2003). Imaging characteristics of gastric lipomas in 16 adult and pediatric patients. American Journal of Radiology, 181, 981–985.Google Scholar