Figure 2From: KRAS mutation in adenocarcinoma of the gastrointestinal type arising from a mature cystic teratoma of the ovaryImmunohistchemical staining of the adenocarcinoma part arising from an ovarian teratoma. The adenocarcinoma part showed positive on CDX-2 (A), CK-20 (B) and villin (C) while CK-7 (D) was negative (magnification x 400).Back to article page