Published online Jun 26, 2019. doi: 10.12998/wjcc.v7.i12.1515
Peer-review started: January 29, 2019
First decision: March 9, 2019
Revised: March 24, 2019
Accepted: April 18, 2019
Article in press: April 19, 2019
Published online: June 26, 2019
Processing time: 148 Days and 22.1 Hours
The female genital tract is an uncommon site of involvement for extra-genital malignancies. Ovarian metastases have been described as disseminations of lung adenocarcinoma; rare cases of secondary localizations in the cervix, adnexa, and vagina have also been reported in the literature. Here, we report two cases of advanced lung adenocarcinoma with female genital tract metastasis.
The first case was a 41-year-old woman with stage IV lung adenocarcinoma metastasizing to the cervix. Immunohistochemistry of the cervical biopsy specimen revealed thyroid transcription factor (TTF)-1(+), cytokeratin (CK)-7(+), and (CK)-20(-). Gene mutational analysis showed epidermal growth factor receptor (EGFR) L858R mutation in exon 21. She had a positive response to gefitinib, for both the pulmonary mass and cervical neoplasm. The second case was a 29-year-old woman who was diagnosed with stage IV lung adenocarcinoma with EGFR mutation. After 12 mo of treatment with icotinib, ovarian biopsy showed adenocarcinoma with CDX2(-), TTF-1(+++), PAX8(-), CK-7(+++), CK-20(++), and Ki67(15%+), accompanied with EGFR 19-del mutation and T790M mutation.
Immunohistochemistry and gene mutational testing have greatly helped in locating the initial tumor site when both pulmonary and female genital tract neoplasms exist.
Core tip: The female genital tract is an uncommon site of involvement for extra-genital malignancies. Ovarian metastases have been described as disseminations of lung adenocarcinoma; rare cases of secondary localizations in the cervix, adnexa, and vagina have also been reported in the literature. Here, we report two cases of advanced lung adenocarcinoma with female genital tract metastasis. The initial tumor site should be considered when both pulmonary and female genital tract neoplasms exist. Immunohistochemistry and gene mutational testing have greatly helped in locating the initial tumor site.