RID34263 Intramammary lymph node

definition [BI-RADS] Mammo/MR: Circumscribed masses that are reniform and ahve hilar fat. they are generally 1 cm or small in size (but may be larger than 1 cm and characterized as normal when fat replacement is pronounced) and frequently occur in the upper portions of the breast closer to the axilla, although tey may occur anywhere in the breast. They are often seen adjacent to a vein. US: Circumscribed, oval masses with hypoechoic cortices and echogenic fatty hila, often reniform and containing hilar fat; most commonly seen int eh upper outer quadrant (especially the axillary tail); usually 3mm to 1cm.

comment When the cortex is focally or diffusely thickened, or microcalcifcations are present within the node, metastatic disease is a consideration along with infectious and inflammatory processes, lymphoma or leukemia, granulomatous disease, connective tissue disorders such as rheumatoid arthritis, and sarcoidosis.