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The Difference in Presentation Level of Variant Receptors in Female Breast Tissue in Macromastia and Micromastia

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified June 2005 by National Taiwan University Hospital.
Recruitment status was:  Not yet recruiting
Information provided by:
National Taiwan University Hospital Identifier:
First received: September 12, 2005
Last updated: NA
Last verified: June 2005
History: No changes posted
There are more and more macromastic women in Taiwan, which may due to the high cholesterol foods. Patients with macromastia not only suffered from physical problems but also psychological discomforts.

Condition Intervention Phase
Aging Procedure: obtain surgical specimen for analysis Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Educational/Counseling/Training

Further study details as provided by National Taiwan University Hospital:

Primary Outcome Measures:
  • difference in receptor expression level

Estimated Enrollment: 60
Study Start Date: January 2006
Estimated Study Completion Date: August 2006
Detailed Description:

Large breasts cause neck and back pain, irritating grooves, cut in the skin of the shoulders by the pressure of brassiere straps, breast pain, and maceration and dermatoses in the inframammary region. From a psychological point of view, excessively large breasts can be troublesome focus of embarrassment for the teenager as well as the woman in her senior years. Unilateral hypertrophy with asymmetry heightens embarrassment. Thus, patients seek to reduce the size of their breasts.

In the human female, variant receptors were detected in epithelial cells in normal breast tissue, benign breast lesions, breast carcinoma tissue, and breast cancer cell lines2-11. The cause of the difference in breast development status is still unclear. Abnormalities at the tissue receptor level may be important in the pathophysiology of macromastia. This study aimed to make clear the difference in variant receptor levels between breast hypertrophy patients and macromastia ones by examining the receptor levels in breast tissue. Then, we could explore the possible etiology of mammary hypertrophy and macromastia.


Ages Eligible for Study:   20 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • patients receiving reduction mammoplasty

Exclusion Criteria:

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00173251

Contact: Hao-Chih Tai, M.D. 886-2-23123456 ext 5109

Sponsors and Collaborators
National Taiwan University Hospital
Principal Investigator: Hao-Chih Tai, M.D. National Taiwan University Hospital
  More Information Identifier: NCT00173251     History of Changes
Other Study ID Numbers: 9461700605
Study First Received: September 12, 2005
Last Updated: September 12, 2005 processed this record on September 21, 2017