**Core Concept**
Spontaneous nipple discharge, particularly when bloody, can be a symptom of underlying breast pathology, including intraductal papilloma, ductal carcinoma in situ (DCIS), or invasive breast cancer. The management of this condition involves a thorough diagnostic workup to identify the underlying cause.

**Why the Correct Answer is Right**
The patient's presentation of spontaneous bloody nipple discharge from a single duct is highly suggestive of an intraductal papilloma, a benign tumor that arises from the ductal epithelium. Management typically involves ductal excision or biopsy, which is usually performed under stereotactic or ultrasound guidance. This approach allows for both diagnosis and treatment of the underlying lesion.

**Why Each Wrong Option is Incorrect**
**Option A:**
This statement is true, as a thorough diagnostic workup is essential in managing spontaneous nipple discharge. It may include imaging studies such as mammography, ultrasound, or MRI, as well as ductal cytology or biopsy.

**Option B:**
This statement is true, as a ductogram or galactography may be used to visualize the ductal system and identify the site of the discharge.

**Option C:**
This statement is false, as the primary management of spontaneous bloody nipple discharge from a single duct is ductal excision or biopsy, not conservative management. While conservative management may be considered for patients with multiple ductal discharge or other benign conditions, it is not the primary approach for this patient's presentation.

**Clinical Pearl / High-Yield Fact**
In cases of spontaneous nipple discharge, it is essential to rule out underlying malignancy, particularly in postmenopausal women or those with a strong family history of breast cancer.

**Correct Answer:** C. Conservative management is not the primary approach for a patient with spontaneous bloody nipple discharge from a single duct.