Sonographic image of cervix epithelioid trophoblastic tumor coexisting with mucinous adenocarcinoma in a postmenopausal woman: A case report

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Abstract

Rationale:

Epithelioid trophoblastic tumor (ETT) is a distinctive but rare gestational trophoblastic neoplasia (GTN) composed of chorionic-type intermediate trophoblast cells. Approximately 50% ETT arose from the uterine cervix or lower uterine segment following a previous pregnancy with vaginal bleeding. With its unusual ability to simulate an invasive epithelioid neoplasm, ETT frequently poses a diagnostic challenge, especially involving the uterine cervix.

Patient concerns:

We herein report the case of a 60-year-old female with persistent vaginal bleeding and middle-level elevation of serum human chorionic gonadotropin (hCG). Ultrasound revealed a 3.0 × 2.7 cm well-circumscribed, strongly echogenic lesion in the cervix, with a peripheral pattern of Doppler signals. The enhanced pattern by contrast-enhanced ultrasound displayed strong peripheral enhancement accompanied with globular appearance, then centripetal filling completely, and fading away rapidly.

Diagnoses:

The final pathological diagnosis was ETT accompanying mucinous adenocarcinoma.

Interventions:

Due to the pre-operative evaluation of a presumed IB2 cervix mucinous adenocarcinoma, the patient was treated with 2 courses of neoadjuvant chemotherapy followed by radical hysterectomy.

Outcomes:

The patient is currently disease-free for the past 1 year.

Lessons:

This case report demonstrates that sonographic image of tumor shapes and blood flow could be helpful in differentiating ETT from another GTN and enable more accurate diagnosis before treatment.

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