spindle cell lipoma. (a) Benign cytology BSCT, moderately cellular smear with benign looking spindle cells, Papanicolaou × 400. (b) Bland spindle cells intermingled with mature adipocytes and thick collagen bundles, H&E × 400. (c) Another field of the same case where the adipocytes are less prominent compared to "b", H&E × 400. (d) Adipocytes and spindle cells positive for CD34 IHC, DAB, Hx, × 400. See additional files 1, 2, 3, 4 for higher resolution images.