Squamous cell carcinoma associated with endometriosis in the uterus and ovaries: A case report

Figure 1 Imaging features. Computed tomography showed a solid cystic mass 5.9 cm × 8.3 cm × 6.7 cm in size in the left pelvis and a solid cystic mass 3.6 cm × 3.7 cm × 3.8 cm in size in the right adnexa.

Figure 2 Morphological features. A: Endometrial glands appeared in the myometrium [Hematoxylin and eosin (HE) 10 ×]; B: Some ectopic endometrial glands showed metaplasia in squamous epithelium (HE 10 ×); C: Tumor cells showed differentiation characteristics in squamous epithelium, arrayed as nests and infiltrated with a large amount of keratinization (HE 10 ×); D: The cystic wall of a solid cystic mass in the right ovary (HE 10 ×); E and F: Normal squamous epithelial and cervical glands were observed in cervical tissues (HE 4 ×, 10 ×).

Figure 3 Immunohistochemical features. A: Tumor cells positively expressed cytokeratin, P40; B: Tumor cells positively expressed P63; C: Estrogen receptor completely delineated the ectopic glands.