A 55- years old lady presenting to out patient depament with postmenopausal bleeding for 3 months has a 1 x 1 cm nodule on the anterior lip of cervix. The most appropriate investigation to be done subsequently is :
**Core Concept**
The clinical presentation of postmenopausal bleeding with a cervical nodule warrants investigation for cervical cancer, specifically squamous cell carcinoma or adenocarcinoma. The anterior lip of the cervix is a common site for neoplastic lesions.
**Why the Correct Answer is Right**
The most appropriate investigation for a cervical nodule with postmenopausal bleeding is colposcopy, followed by biopsy. Colposcopy allows for magnified visualization of the cervix, identifying abnormal areas for targeted biopsy. The presence of a nodule on the anterior lip of the cervix suggests a high risk of invasive cancer, making colposcopy with biopsy essential for accurate diagnosis and staging.
**Why Each Wrong Option is Incorrect**
**Option A:** A Pap smear is a screening tool for cervical cancer but is not sufficient for diagnosing a visible nodule on the cervix. It may not detect early invasive lesions.
**Option B:** Ultrasound may be useful in assessing cervical anatomy and detecting larger lesions, but it is not the first-line investigation for a cervical nodule with postmenopausal bleeding.
**Option C:** MRI may be used in the staging of cervical cancer, but it is not the initial investigation for a cervical nodule with postmenopausal bleeding.
**Clinical Pearl / High-Yield Fact**
The anterior lip of the cervix is a high-risk area for cervical cancer, particularly squamous cell carcinoma. A visible nodule in this area warrants colposcopy with biopsy for accurate diagnosis.
**Correct Answer:** C. Colposcopy