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Your Concerns
Are you facing any of these concerns?
I was told there is a lump (mass) on my breast ultrasound.
It is said to be a fibroadenoma, and I am worried the incision scar will be large.
I have several lumps — can they be addressed in one session?
I would also like a tissue biopsy for confirmation.
I want it removed while minimizing the scar.
If any of these concerns resonate,
now is the time to speak with a specialist.

Mammotome — Why Diagnosis Comes First
Mammotome is a method that uses a vacuum-assisted device to excise benign breast masses through a minimal incision. Because the lesion is confirmed in real time with ultrasound while it is being excised, the scar burden can be reduced compared with a conventional wide-incision approach.
It is not, however, applied identically to every breast mass. Whether the lesion is benign, and whether its size, number, and location are suitable for the procedure, must first be confirmed through imaging and physician assessment — and this judgment determines whether the procedure is appropriate and how it is carried out.
Mammotome is a method for excising benign masses and for obtaining tissue for diagnostic purposes; it is not a procedure that replaces the treatment of malignant disease such as breast cancer. If malignancy is suspected, additional testing and appropriate medical care are required.
Because it is performed through a small incision, it is usually carried out under local anesthesia with a short procedure time, and same-day return to daily life is possible in many cases. Recovery varies by individual depending on the size and number of lesions.
At Umnagumo, eligibility for the procedure is judged carefully on the basis of physician assessment and imaging, and the procedure and subsequent care are guided in a direction that reduces the scar burden.

Why Choose Us
The Umnagumo Approach to Mammotome
We determine eligibility first through imaging and physician assessment, reduce the scar burden with a minimal incision, and guide biopsy confirmation and follow-up care.
Diagnosis First
Eligibility judged by imaging and physician assessment
Anesthesia · Recovery
Local anesthesia · same-day return to daily life in many cases
Procedure Focus
Ultrasound-guided · minimal incision · biopsy confirmation
FAQ
Mammotome FAQ
It is often performed through a small incision of only a few millimeters, so suturing is rarely required and the scar burden tends to be small. The location and size of the incision vary with the position and size of the lesion, and recovery varies by individual.
Because excision is carried out under real-time ultrasound guidance, excising several masses through a single insertion can be considered. Whether this is actually possible is judged after examination, depending on the position, size, and number of the lesions.
The excised tissue can be examined by biopsy where needed. Any subsequent management based on the biopsy result is advised through medical consultation.
It is usually performed under local anesthesia, so same-day return to daily life is possible in many cases. Bruising and swelling generally subside over time, though this varies by individual depending on the size and number of lesions.
The excised lesion itself is removed, but by the nature of breast tissue a new mass can arise in a different area, so regular follow-up observation is recommended. Recurrence and follow-up management are advised through medical consultation.
Mammotome is a method for excising benign masses and obtaining tissue for diagnostic purposes; it does not replace the treatment of malignant disease. If malignancy is suspected, additional testing and appropriate medical care are required.
Whether insurance (such as indemnity insurance) applies can vary with the nature of the lesion, the diagnosis, and the terms of your policy, so it cannot be stated uniformly. The relevant documents and whether coverage may apply are reviewed together during consultation.
Consultation
Talk to a Specialist
Our specialists, with 25+ years of experience, consult with you personally.
Receive a tailored diagnosis and optimal surgical plan, made for you.