Incidental, low-fat variant of spindle cell lipoma: a novel tumour of the small intestine.

A woman underwent surgical intervention for a carcinoma of the ovary. In the intervention, a submucosal nodule of the ileum was found. Pathological study revealed a spindle cell lipoma (SCL). This case revealed the presence of CD34-positive spindle and stellate cells with dendritic cytoplasmic prolongations, a feature shared with dendritic fibromyxolipoma. Fluorescence in in situ hybridisation analysis showed 13q14 heterozygous deletion. Spindle cell lipoma of the small intestine has not been previously reported. Spindle cell lipoma, although rare, should be included among the benign mesenchymal lesions of the small intestine. This report extends the range of locations in which this tumour is found to arise.