Retromammary space

Retromammary space is an anatomical region located posterior to the mammary gland and anterior to the pectoralis major muscle. It is also known as the retromammary bursa or the bursa of the pectoralis major muscle. The term "retromammary" is derived from the Latin words "retro" meaning behind and "mammary" referring to the breast.

Anatomy

The retromammary space is a potential space, meaning it is normally collapsed but can expand under certain conditions. It is filled with loose connective tissue and fat, which allows the breast to move freely over the underlying pectoralis major muscle. The retromammary space is separated from the breast tissue by a thin layer of fascia known as the posterior mammary fascia.

Clinical significance

The retromammary space is of clinical importance in several medical procedures and conditions. In breast augmentation, implants can be placed either in front of or behind the pectoralis major muscle, with the latter option involving the retromammary space. The space can also become involved in certain pathological conditions, such as breast cancer and mastitis. In breast cancer, tumors can invade the retromammary space and spread to the chest wall. In mastitis, infection can spread to the retromammary space, leading to an abscess.

See also

• Breast
• Mammary gland
• Pectoralis major muscle
• Breast augmentation
• Breast cancer
• Mastitis

References

Retromammary space Resources
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