Fibroadenoma: pericanalicular and intracanalicular patterns

A fibroadenoma is a solid breast lump made from glandular and connective tissue. In a pericanalicular pattern, the tissue grows around the ducts while the ducts keep their general shape. In an intracanalicular pattern, the growing tissue presses on the ducts, which can make them look slit-like. A report may mention one pattern or a mixture of both. These words describe microscopic architecture; they do not by themselves tell you whether a lump needs removal.

A breast lump is often benign, but its cause cannot be established from touch alone. Ultrasound can show whether a lump has features commonly associated with a fibroadenoma, while biopsy can examine cells or tissue when the clinical or imaging picture needs confirmation.

Take the report to the clinician who arranged your assessment and ask how the examination, imaging and any tissue result fit together. A stable, comfortable lump may be monitored with the plan your clinician gives you. Removal may be discussed if the lump is growing, uncomfortable, difficult to classify, or causing significant concern. You can read about Breast Ultrasound, Breast Biopsy and Breast Lump Excision to understand these options.

Arrange a prompt breast assessment for a new lump, a clear change in an existing lump, skin tethering, nipple inversion, unusual discharge, or swelling in the armpit. Seek urgent medical help for severe breast redness with fever, rapidly worsening swelling, or feeling seriously unwell. These signs need assessment regardless of whether a fibroadenoma has been considered.

Ask whether the finding is typical on imaging, whether tissue sampling is advised, what change should trigger review, and whether monitoring or removal fits your symptoms and examination.