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Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First

청담오케이의원 · 청담오케이의원 성현주 원장 · April 15, 2026

※ This post is content provided for medical information purposes. It is not subject to review under Article 56, Paragraph 2 and Article 57 of the Medical Service Act, and is not a...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: 청담오케이의원

Original post date: April 15, 2026

Translated at: April 19, 2026 at 2:04 PM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

※ This post is content provided for medical information purposes.

It is not subject to review under Article 56, Paragraph 2 and Article 57 of the Medical Service Act, and is not a post for advertising purposes.

Female accessory breast vs male accessory breast

What’s the difference?

Hello,

I’m Sung Hyun-ju, director of Cheongdam OK Clinic.

Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First image 1

▶ Regular member of the Korean Academy of Cosmetic Surgery (KACS)
▶ Regular member of the Korean Society for the Study of Obesity (KSSO)
▶ Regular member of the Korean Association of Obesity and Aesthetic Treatment (KAAM)
▶ Regular member of the Korean Society of Liposuction (KSSL)
▶ Regular member of the Korean Society of Aesthetic Plastic Surgery (KSAS)

Many people suspect accessory breasts when they see tissue protruding toward the armpit or a bulge visible over the bra line.

In particular, similar forms can appear not only in women but also in men, so many people mistake them for simple fat.

Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First image 2

However, accessory breasts can require completely different approaches depending on whether they are fat or glandular tissue.

So the first thing to check is "what type my condition is."

Table of Contents
1. Accessory breast: the difference between fat and glandular tissue 2. Features and causes of female accessory breast 3. Features of male accessory breast and key points for differentiation 4. Criteria that change the treatment direction
  1. Accessory breast: the difference between fat and glandular tissue

Accessory breasts appear when fat or glandular tissue develops in the armpit area.

Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First image 3 Female accessory breast vs male accessory breast

The fat type is, as the name suggests, a form in which fat has accumulated, and its size often changes depending on weight fluctuations.

By contrast, the glandular type is a form in which breast tissue remains, and it tends to persist regardless of simple weight changes.

Depending on this difference, it is determined whether the issue can be resolved with simple fat removal alone or whether glandular tissue must also be considered.

  1. Features and causes of female accessory breast

In women, glandular tissue often develops as well under the influence of hormones.

Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First image 4

So it is not just weight gain; there are also cases where a firm tissue can be felt.

In particular, if swelling or pain is felt before or after menstruation, the possibility of the glandular type should be considered.

Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First image 5 Left) Before, Right) 2 months later

Also, when wearing underwear, the armpit line may bulge out and make the overall line look uneven.

  1. Features of male accessory breast and key points for differentiation

In men, the fat type is more common.

Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First image 6 Female accessory breast vs male accessory breast

However, in some cases, glandular tissue develops similarly to gynecomastia, so accurate differentiation is necessary.

If it is the fat type, it feels generally soft and diffuse.

Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First image 7

If it is the glandular type, however, firm tissue may be felt in the center.

If this difference is not accurately distinguished, residual tissue may remain after treatment or it may feel like a recurrence.

  1. Criteria that change the treatment direction

The most important thing in improving accessory breast tissue is an approach that matches whether it is fat or glandular tissue.

Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First image 8 Female accessory breast vs male accessory breast

If it is the fat type, line improvement is possible by removing unnecessary fat.

On the other hand, if glandular tissue is included, simple fat removal alone may not be enough.

That is why, before treatment, it is important to accurately check the tissue condition and choose the method that fits it.

Female Accessory Breast vs Male Accessory Breast: Check the Difference Between Fat and Glandular Tissue First image 9 Female accessory breast vs male accessory breast

Accessory breast tissue is an area that should be judged based on tissue structure, rather than simply viewing it as "weight gain."

In particular, because the causes and forms can differ between women and men,

using the same criteria may lead to different outcomes.

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Female accessory breast vs male accessory breast

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