Pathology Report:"Jimmy Stewart's mass is thought to represent an angiolipoma. Angiolipomas are a variant of a lipoma.
Lipomas are benign connective tissue tumors composed of histologically normal adipose tissue. It has been
postulated that lipomas may represent regions of nodular hyperplasia or altered lipocyte metabolism
rather than true neoplasia. Because lipomas have no defined microscopic borders, gross inspection at the
time of surgery is often a better indicator of completeness of resection than microscopic examination.
Development of multiple lipomas is common, and close observation for additional masses would be prudent.
Surgical excision is typically curative. A vascular derived neoplasm was considered, but is less favored at this time. Additional recuts and
re-trims to further characterize the lesion are pending... HISTOPATHOLOGIC DESCRIPTION:
The specimen consists of multilobulated nodules of well-differentiated adipocytes supported by modest
bands of fibrocollagenous tissue that occasionally are partially encapsulating the nodules. There are
multifocal random branching vascular structures within this mass that are interspersed among lobules of
mature adipocytes. Individual adipocytes have abundant cytoplasmic lipid and small compressed nuclei.
Mitoses are not seen. Inflammation is not present..."
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