Spindle-cell lipoma

Abstract
Five spindle-cell lipomas in male patients were examined by light and electron microscopy. Four were located in the s.c. tissues of the upper back or posterior neck and one behind the left ear. They exhibited a spectrum of histological growth patterns. EM demonstrated 2 distinct populations of tumor cells; spindled non-fast-storing mesenchymal cells and mature lipocytes. It is hypothesized that the spindled cells are analogous to the stellate mesenchymal cell of the primitive fat lobule.

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