Differential Diagnosis for Breast Pain with Small White Bumps

Primary Differential Diagnoses

The National Comprehensive Cancer Network recommends that Montgomery tubercles, which are normal sebaceous glands on the areola, and blocked sebaceous glands/milia, are the most likely diagnoses for small white bumps on the breast, and are benign findings that require only reassurance and symptomatic management if the clinical breast exam is otherwise normal 1, 2
The American College of Radiology suggests that cyclic mastalgia with sebaceous prominence is a common cause of breast pain, related to menstrual cycle, with concurrent prominence of normal sebaceous structures 3

The National Comprehensive Cancer Network recommends assessing for palpable mass, asymmetric thickening, nipple discharge, or skin changes beyond the white bumps during the clinical breast examination 1
The American College of Radiology suggests determining pain characteristics, such as cyclic vs. noncyclic, focal vs. diffuse, relationship to menses, duration, and impact on daily activities 1, 3

The National Comprehensive Cancer Network recommends reassurance and symptomatic pain management, including well-fitted supportive bra, over-the-counter NSAIDs, ice packs or heating pads, and regular physical exercise, for benign findings such as Montgomery tubercles or sebaceous glands 1, 4
The National Comprehensive Cancer Network suggests that antibiotics may be given based on clinical suspicion of infection, but biopsy should proceed if imaging shows suspicious findings 2

The American College of Radiology warns against dismissing focal, persistent breast pain without proper evaluation, even when white bumps appear benign, as some cancers can present with pain 3, 6
The National Comprehensive Cancer Network advises against assuming white bumps are always benign without examining for associated concerning features, such as ulceration, bleeding, or eczematous changes suggesting Paget's disease 2