Nipple discharge is a clinical symptom that often causes immediate concern for many women. While it is natural to worry about breast cancer, most cases of nipple discharge are related to benign conditions. Among these, the most common cause of spontaneous, single-duct discharge is a condition known as an Intraductal Papilloma.
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What Is An Intraductal Papilloma?
An intraductal papilloma is a small, wart-like benign growth that develops within the milk ducts of the breast. These growths consist of fibrous tissue and blood vessels. They are not cancerous, but they can cause significant distress due to the symptoms they produce.
There are generally two types of papillomas:
- Solitary Papilloma: A single growth usually located in the large milk duct near the nipple. This is most common in women approaching menopause.
- Multiple Papillomas: Smaller growths located in the smaller ducts further away from the nipple. These are more common in younger women and may be associated with a slightly higher risk of future breast cancer.
What Are The Symptoms Of Intraductal Papilloma?
The presence of an intraductal papilloma is most frequently identified through changes in the nipple area. Common symptoms include:
- Spontaneous Nipple Discharge: Fluid that leaks out without any squeezing or pressure.
- Discharge Appearance: The fluid is often clear (serous) or bloody (sanguineous).
- Location: The discharge typically originates from a single duct in only one breast.
- Breast Lump: In some cases, a small lump may be felt behind or next to the nipple, though many papillomas are too small to be palpable.
Is Intraductal Papilloma Linked To Breast Cancer?
In Singapore, where breast cancer is the leading cancer among women, any abnormal breast symptom must be taken seriously. According to the Singapore Cancer Registry Annual Report 2023, breast cancer accounts for nearly 30% of all female cancer diagnoses.
While a solitary intraductal papilloma is benign, it is essential to distinguish it from Malignant Intraductal Papillary Carcinoma. Furthermore, women with multiple papillomas may have a marginally increased risk of developing breast cancer in the future. There is currently an information gap regarding the specific long-term transition rate from benign papillomas to malignancy within the Singaporean population, as most local data focuses on general breast cancer incidence rather than specific benign precursors.
How Is An Intraductal Papilloma Diagnosed?
If you experience nipple discharge, a breast specialist will conduct a series of investigations to confirm the diagnosis:
- Clinical Breast Examination: A physical assessment to check for lumps or skin changes.
- Breast Ultrasound: This is often the first line of imaging to visualise the ducts and identify any small growths.
- Mammogram: To screen the rest of the breast tissue for any other abnormalities.
- Ductogram (Galactogram): A procedure where a tiny amount of contrast dye is injected into the discharging duct followed by an X-ray to outline the growth.
- Biopsy: A core needle biopsy or a fine-needle aspiration may be performed to ensure the cells within the growth are non-cancerous.
What Are The Treatment Options For Intraductal Papilloma?
Once a diagnosis of intraductal papilloma is confirmed, the standard treatment is surgical removal. This is recommended to stop the discharge and to allow for a full laboratory analysis of the growth to rule out any hidden atypical cells.
- Microdochectomy: This is a targeted surgical procedure where only the affected milk duct containing the papilloma is removed.
- Total Duct Excision: In cases where the discharge comes from multiple ducts or the specific duct cannot be identified, all the major ducts behind the nipple may be removed.
These procedures are typically performed under general anaesthesia, but they are considered minor surgeries with relatively short recovery times.
Find A Doctor For Your Nipple Discharge / Intraductal Papilloma Concerns
If you are looking for a breast surgeon for your nipple discharge concerns, you can consider our Preferred Doctors:
- Dr Tan Yia Swam is a highly experienced general surgeon with a special focus on breast conditions, offering minimally invasive surgery, ultrasound-guided biopsies and comprehensive cancer surgical care.
[SG] Featured Doctor- Dr Kevin Koo
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