atypical lipomatous tumor

atypical lipomatous tumor

Atypical lipoma, well-differentiated liposarcoma Pathology A soft tissue tumor, most often retroperitoneal, also seen in the skin Prognosis ALTs often recur locally, but rarely metastasize.
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These changes imparted a lipoblast-like resemblance, giving the impression of an atypical lipomatous tumor or a liposarcoma.
Histologic examination revealed an atypical lipomatous tumor with a remarkably large portion of spindles.
2,17-19) The differential diagnosis of atypical lipomatous tumor and lipoma exists due to the lipoma-like variant of atypical lipomatous tumor, which can have only scattered atypical cells.
Determination of whether a well-differentiated lipomatous neoplasm of the extremity is an atypical lipomatous tumor or a lipoma by MDM2 FISH is helpful in determining whether a reexcision and indefinite clinical follow-up is necessary (for atypical lipomatous tumor).
Tumors meeting the classic histopathologic criteria for WDLs that arise in the oral cavity, salivary glands, and other superficial, surgically accessible areas are called atypical lipomatous tumors (ALTs).
In these 10 sections, the authors discuss the general information for each tumor in detail and also include some interesting topics in relevant sections, such as the reasons for retaining the category of fibrous histiocytomas, spindle cell/pleomorphic lipoma versus atypical lipomatous tumors, and problematic smooth muscle tumors of the soft tissues and retroperitoneum.

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