Step 1: Understanding the Question:
The clinical concern is Postmenopausal Bleeding (PMB). In a woman of this age, any bleeding or blood-stained discharge is considered a sign of malignancy (Endometrial Cancer) until proven otherwise.
Step 2: Detailed Explanation:
Differential Diagnosis of PMB: Causes include atrophic vaginitis, endometrial polyps, endometrial hyperplasia, or endometrial carcinoma.
Clinical Clues: The presence of hypertension (BP 170/100) is a known risk factor for endometrial carcinoma (along with obesity and diabetes).
Immediate Workup:
- PV examination: To look for cervical or vaginal sources of bleeding.
- Pap smear: To rule out cervical cancer, which can also present this way.
- Transvaginal Ultrasound (TVUSG): This is the first-line imaging modality to measure endometrial thickness (ET). An ET \(> 4 \text{ or } 5 \text{ mm}\) in a postmenopausal woman is highly suspicious and mandates an endometrial biopsy.
Why not others? While the hypertension needs treatment (Option C), the potential cancer (PMB) is the most time-sensitive and life-threatening issue that must be investigated first.
Step 3: Final Answer:
The standard of care for a woman with postmenopausal bleeding is a thorough gynecological evaluation including TVUSG and a Pap smear to rule out malignancy.