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Zorluk: OrtaBreast Disorders

A 36-year-old woman comes to the clinic due to nipple discharge for the past month. She first noticed small, dark red stains on her bra. Over the past week, she has been able to express fluid from her right nipple by gently squeezing it. The fluid is frankly bloody. She has no breast pain, skin changes, or noticeable lumps. The patient's menstrual cycles are regular, occurring every 28 days, and she is nulligravida. She takes no medications and has no family history of breast or ovarian cancer. Her vital signs are within normal limits. On physical examination, both breasts are symmetric with normal skin architecture. There are no palpable breast masses or axillary lymphadenopathy. Gentle compression of the right areola elicits a few drops of bloody fluid from a single duct on the right nipple. The left breast examination is unremarkable. Which of the following is the most likely underlying pathological finding in this patient?

  1. Benign, papillary growth within a major lactiferous ductCevap
  2. B
    Dilation and chronic inflammation of the subareolar ducts
  3. C
    Enlargement of breast lobules with fluid-filled cysts
  4. D
    Eczematous changes and ulceration of the nipple epidermis
  5. E
    Hypersecretion of prolactin from an anterior pituitary adenoma

Cevap

The most likely pathological finding is a benign, papillary growth within a major lactiferous duct, characteristic of an intraductal papilloma.
The correct answer describes an intraductal papilloma. This benign tumor arises from the epithelial lining of the major lactiferous ducts. It is the most common cause of pathologic nipple discharge, which is classically described as unilateral, spontaneous, and bloody (sanguineous) or serosanguineous, originating from a single duct. Because these tumors are typically small (often < 1 cm), they usually do not present with a palpable breast mass or overlying skin changes. Despite its benign nature, the standard of care requires further evaluation with diagnostic imaging and potentially tissue biopsy to definitively rule out an underlying malignancy.

Adım Adım Çözüm

1
Analyze the characteristics of the nipple discharge.
The discharge is unilateral, spontaneous, and bloody (sanguineous) from a single duct.
Characterizing the discharge as pathologic (unilateral, bloody/serous) versus physiologic (bilateral, milky) narrows the differential diagnosis.
2
Evaluate the associated physical examination findings.
There are no palpable breast masses, skin changes, or axillary lymphadenopathy.
The absence of a mass or skin changes (like in Paget disease) combined with bloody discharge strongly points to a small intraductal lesion.
3
Correlate the clinical picture with the most likely pathology.
The clinical picture perfectly matches an intraductal papilloma.
Intraductal papilloma is the most common cause of unilateral, bloody nipple discharge without a coexisting breast mass.

Anahtar Kavram

Intraductal papilloma is a benign breast tumor that is the most common cause of unilateral, spontaneous, bloody nipple discharge, typically presenting without a palpable mass.
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