parametrial invasion
Extension of cervical cancer into the parametrial tissues, indicating locally advanced disease.
Full Definition
Parametrial invasion refers to the extension of cervical carcinoma beyond the cervix into the parametrial tissues, which include the cardinal and uterosacral ligaments. This finding indicates locally advanced cervical cancer and typically corresponds to FIGO stage IIB disease. Parametrial invasion significantly impacts prognosis and treatment planning, often necessitating chemoradiation therapy rather than primary surgical management. The diagnosis may be made clinically through pelvic examination, or radiologically through MRI imaging. Histopathologic confirmation requires examination of parametrial tissues obtained during radical hysterectomy.
Usage
Usage note: Critical for staging; distinguish from other forms of local extension.
In Context
- "MRI imaging demonstrated parametrial invasion, upstaging the cervical cancer to IIB." — Radiology report
- "Histopathologic examination confirmed parametrial invasion with tumor extending to the cardinal ligament." — Pathology report