Endometrial clear cell carcinoma invading the right oviduct with a cooccurring ipsilateral oviduct adenomatoid tumor: A case report

Figure 1 Cauliflower mass in the uterine cavity (black arrow) and right oviduct mass (orange arrow).

Figure 2 Histology of the uterine tumor (hematoxylin and eosin staining). A: The cancer tissue showed nest-like and solid infiltration into the myometrium; B: The cytoplasm of tumor cells was clear; C: Tumor cells were papillary and had a stud-like arrangement; D: Tumor cells were arranged in a glandular tube. Mucus was present in the gland cavity.

Figure 3 Immunohistochemical staining of the intrauterine tumor. A: Positivity for CK7; B: Positivity for Napsin-A; C: Positivity for P16; D: High Ki-67 index; E: Negativity for vimentin; F: Negativity for ER; G: Wild type p53; H: Negativity for Wilms’ tumor 1.

Figure 4 Immunohistochemical staining of the oviduct tumor. A: The tumor tissue and adenomatoid tumor were CK positive; B: The tumor tissue was calretinin negative and adenomatoid tumor was calretinin positive.

Figure 5 Histology of the oviduct mass (hematoxylin and eosin staining). A: Cancer tissue coexisted with adenomatoid tumor area; B: Microcapsule-like structure of adenomatoid tumor area.