tail of Spence

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axillary process of breast

the superolateral position of the mammary gland, which extends toward the axilla and blends with the anterior axillary fold.
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References in periodicals archive ?
The reported sites of breast cystic lymphangioma are upper outer quadrant, axillary tail of Spence and subareolar are related to the route of the lymphatic system.
The mammary glandular tissue was intermixed with adnexal glands, a superficial distribution indicative of ectopic tissue rather than an axillary extension of the mammary tail of Spence.