Rapid growing fibroadenoma in an adolescent.
BACKGROUND
We report a case of rapidly growing fibroadenoma.


METHODS
A 13-year-old girl consulted the outpatient clinic regarding a left breast mass. The mass was diagnosed as fibroadenoma by clinical examinations, and the patient was carefully monitored. The mass enlarged rapidly with each menses and showed a 50% increase in volume four months later. Lumpectomy was performed. The tumor was histologically diagnosed as fibroadenoma organized type and many glandular epithelial cells had positive immunohistochemical staining for anti-estrogen receptor antibody in the nuclei.


CONCLUSIONS
The estrogen sensitivity of the tumor could account for the rapid growth.
Tochika
N
N
Department of Surgery, Noichi Central Hospital, Japan.
Ogawa
Y
Y
Kumon
M
M
Araki
K
K
Sugimoto
T
T
Ohtsuki
Y
Y
Iwata
J
J