Intraductal papilloma of the breast

Intraductal papilloma of the breast (Intraductal papilloma of breast)

1) Disease description (causes and symptoms)

• Definition: A small, nipple-shaped benign tumor that develops inside a milk duct, with most cases being benign; however, some may be accompanied by atypical hyperplasia or cancerous lesions.
• Causes/pathophysiology: The exact cause is unknown. It mainly occurs in people aged 35–55 and forms through localized hyperproliferation of the ductal epithelium. It is classified as solitary (usually central, near the areola) or multiple (toward the peripheral ducts).
• Main symptoms: Nipple discharge (approximately 60% of all patients—may be bloody or mucoid), a small lump near the areola, or no symptoms. The tumor is usually small (most are 0.5 cm or less) and difficult to detect through self-examination.
• Clinical concerns: A solitary papilloma is benign, but it increases the risk of developing breast cancer (approximately 3.3-fold); the frequency of already accompanying cancer at the time of surgery has been reported to be approximately 6%. In cases of multiple papillomas, the risk of progressing to atypical hyperplasia or cancer is higher (according to the literature, an increase in atypical cells of approximately 43% and a progression risk of 10–33%).

2) Treatment methods

• Diagnostic evaluation:
  • Imaging tests: Mammography and breast ultrasound.
  • Duct examinations: The location of the lesion can be identified through ductography (galactography) or ductoscopy.
  • Biopsy: Pathological confirmation is obtained through vacuum-assisted breast biopsy (VAB) or excisional biopsy.
• Standard treatment:
  • Duct excision (surgical removal of the involved duct and papilloma together from the nipple, microdochectomy): Recommended when symptoms are present (bloody discharge or pain), the size is >1 cm, or there is a possibility of cancer or atypical findings. It can be performed through a periareolar incision, allowing preservation of breast shape.
  • Vacuum-assisted breast biopsy (VAB): May be performed for minimally invasive removal and diagnosis of a solitary, small nodule with mild symptoms.
  • Additional treatment: If atypia or cancer is confirmed on pathology, the treatment is determined according to the stage and pathological findings, including additional excision, breast-conserving surgery, or extensive resection and adjuvant therapy (radiation therapy, chemotherapy, etc.).
• Medication: There is no specific drug treatment (symptomatic treatment for symptom relief).
• Lifestyle management and precautions:
  • Observe and record changes in discharge or lumps (color, amount, and frequency).
  • Do not squeeze or otherwise stimulate the nipple unnecessarily.
  • Manage the scar and prevent infection after surgery (keep the wound clean).
• Risk of complications/prognosis:
  • It is usually benign, but atypia or accompanying cancer is possible. The risk of cancer is increased in cases of multiple papillomas. Wounds, infection, changes in nipple sensation, and problems with milk discharge after surgery (rarely affecting breastfeeding) may occur. Regular follow-up is necessary.

3) Checklist before an outpatient visit (including sample questions)

Items/records to prepare:

• A list of currently taken medications (especially anticoagulants and hormone medications)
• Previous breast examination results (mammograms, ultrasounds, and biopsy results) and dates (images or copies of reports, if possible)
• Symptom records: discharge color (bloody/clear/mucoid), amount, onset, persistence, whether it is on one or both sides, and changes in the location or size of breast pain or lumps
• Family history: Family history of breast cancer, ovarian cancer, etc. (details about first-degree relatives)
• Menstruation, pregnancy, and breastfeeding status, and history of hormone therapy
  Materials to show the doctor during the outpatient visit:
• Recent images (USB/CD or hospital printouts) and previous pathology reports Sample questions (it is recommended to prepare answers in advance before the visit):
• When did the discharge begin? Is it continuous or intermittent? Is it on one side or both sides?
• Have there been any changes in the color or amount of the discharge?

4) Examples of general questions to ask the doctor

• Even if my lesion has been confirmed to be benign, what is my future risk of breast cancer? What additional tests or follow-up intervals are needed?
• For my condition, can minimally invasive methods (such as vacuum-assisted removal) be considered instead of surgery (duct excision)? What are their advantages and disadvantages?
• To what extent could surgery affect scarring, nipple sensation, and the ability to breastfeed?
• What are the complications associated with the examination and surgery, and what is the recovery process like?

5) Examples of condition-specific questions

• Is my papilloma solitary or multiple? If it is multiple, are additional tests or extensive excision necessary?
• If atypical cells (or ductal carcinoma in situ) are suspected or confirmed on biopsy, what will the future treatment plan (additional excision, surveillance, or adjuvant treatment) be?

(If necessary, it is recommended to bring diagnostic images and pathology results and consult a breast surgeon specializing in breast diseases.)