Examkin

Question

Difficulty: MediumBreast Disorders

A 35-year-old woman presents to her primary care physician reporting intermittent, reddish-brown discharge from her right nipple over the past 3 weeks. She has noticed small stains on her bra but denies any localized breast pain, overlying skin changes, or fever. Her menstrual cycles are regular, and she takes no daily medications. She has no family history of breast or ovarian cancer. Vital signs are within normal limits. On physical examination, the breasts are symmetric with no skin dimpling, erythema, or nipple retraction. Palpation reveals no discrete masses or axillary lymphadenopathy. Gentle pressure around the right areola elicits a single drop of bloody discharge from a single duct. Which of the following is the most appropriate initial step in the evaluation of this patient?

  1. Mammographic imaging and ultrasonography of the breastsAnswer
  2. B
    Measurement of serum prolactin and thyroid-stimulating hormone levels
  3. C
    Reassurance and routine clinical follow-up in six months
  4. D
    Empiric treatment with oral cephalexin
  5. E
    Core needle biopsy of the right retroareolar tissue

Answer

The correct approach is to obtain mammographic imaging and ultrasonography of the breasts.
The correct management is mammographic imaging and ultrasonography of the breasts. This patient's presentation of spontaneous, unilateral, bloody discharge from a single duct is the classic description of pathologic nipple discharge. The most common cause is a benign intraductal papilloma, but underlying malignancies (such as ductal carcinoma in situ or invasive ductal carcinoma) must be excluded. The evaluation of pathologic nipple discharge is age-dependent. In patients under 30 years of age, targeted ultrasound is the first-line imaging modality. In patients 30 years of age and older, bilateral diagnostic mammography and subareolar ultrasonography are both required to adequately assess for masses, microcalcifications, and ductal abnormalities before considering invasive procedures like duct excision.

Step-by-Step Solution

1
Analyze the characteristics of the patient's presentation.
The patient has unilateral, spontaneous, bloody nipple discharge from a single duct without a palpable mass.
Characterizing the discharge distinguishes between physiologic (endocrine) and pathologic (structural) etiologies.
2
Classify the etiology based on the findings.
The presentation is highly suspicious for a pathologic etiology, with the most common benign cause being an intraductal papilloma, though underlying malignancy must be excluded.
Unilateral, bloody discharge is a classic red-flag sign for structural ductal lesions.
3
Apply age-based diagnostic algorithms for breast pathology.
Because the patient is over 30 years of age (she is 35), she requires both mammography and targeted ultrasound.
Patients <30 undergo targeted ultrasound first to avoid radiation in dense breasts, whereas patients >=30 require both modalities for optimal visualization of calcifications and masses.

Key Concept

Patients presenting with pathologic nipple discharge (unilateral, spontaneous, bloody, or serous) require prompt diagnostic imaging. Those aged 30 and older should undergo both mammography and ultrasound to evaluate for underlying structural lesions.
Rate this question

Topics

Breast Disorders

More questions from this topic