Unexpected Malignant Diagnosis in Colonic Biopsies: Malignant Transformation of Ovarian Mature Teratomas—Two Case Reports and Review of the Literature

Figure 2

(a) Pelvis CT showing a mass with a cystic and solid component and internal septations. (b) Colon biopsy revealing an atypical squamous epithelium, suspicious for well-differentiated squamous cell carcinoma (H&E, 40x). (c) Gross picture showing a cystic ovarian mass (right) and (d) squamous cell carcinoma invading colonic wall (H&E, 20x). (e) In situ squamous cell carcinoma (H&E, 10x). (f) In situ squamous cell carcinoma and invasive component (H&E, 10x).

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