Surgical Pathology Criteria

Spindle Cell Lipoma

Definition

Diagnostic Criteria

Mammary Type Myofibroblastoma

Spindle Cell Lipoma

Cellular Angiofibroma

Usually diffuse collagen

Ropey collagen

Wispy collagen with prominent round vessels

Desmin positive

Desmin negative

Desmin variable

All are CD34 positive with loss of Rb due to 13q14 abnormalities;  all are benign

Robert V Rouse MD
Department of Pathology
Stanford University School of Medicine
Stanford CA 94305-5342

Original posting : July 29, 2007
Last update: 3/14/16

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