Introduction
Clear cell adenocarcinoma of the cervix is a rare histological variant that is usually associated with intrauterine exposure to diethylstilbestrol (DES).
Main symptoms and/or clinical findings
A 15-year-old girl, virgin, with vaginal bleeding and leucorrhea. There was no history of exposure to diethylstilbestrol. Gynecological examination revealed a 7 cm, solid, irregular, polypoid mass in the vagina, based on the anterior lip of the cervix.
Main diagnoses, therapeutic interventions, and results
The tumor was excised in fragments by colposcopy. Histologically it corresponded to a malignant epithelial neoplasm with a tubulocystic pattern, with papillary and solid areas. Composed of clear or hobnail cells, atypical vesicular nuclei and frequent nucleoli. Psammomatous microcalcifications and foci of tumor necrosis were present. Immunoreactivity for PAX8, CKAE1/3AE, EMA, CA-125, CK7, and Napsin-A was present. The diagnosis was clear cell adenocarcinoma.
The patient was treated with radical hysterectomy and is disease-free three years later.
Conclusion
Clear cell adenocarcinoma of the cervix is a rare tumor lacking clear guidelines for effective treatment. The clinical manifestations are basically the same as those of cervical squamous cell carcinoma, and in young patients, they can be confused with dysfunctional uterine bleeding, requiring a correct differential diagnosis. Our patient received primary treatment with colposcopic electrosurgical excision biopsy, followed by radical hysterectomy without chemotherapy or radiation therapy. This could be a new treatment approach for early-stage patients given the positive results observed.
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