Figure 1 :Photomicrographs from Case 1 show tumor with papillary confi gurati on (a, H and E, x40). The papillae are lined by multi layered epithelium showing nuclear crowding (b, H and E, x200), hyperchromasia and small nucleoli (c, H and E, x400). Foci of invasion are noted into the adjacent stroma (d, H and E, x100).