Fibroadenomas are the most common benign breast tumors, occurring most frequently in young females between 15-25 years old. They represent a hyperplastic growth of the terminal ductal lobular unit and their cause is unknown. Most fibroadenomas stop growing at 2-3 cm and involute after menopause. They present as a painless, movable breast lump that can be detected on mammogram, ultrasound or biopsy. Treatment involves surgical excision of the lump, with periareolar or submammary incisions depending on the tumor type. Rarely, fibroadenomas can undergo sarcomatous change.

2. Introduction
 Most common benign tumor of breast
 Benign tumors that represent a
hyperplastic or proliferative process in
a single terminal ductal unit
 Young females:15 -25yrs of age

3.  Aberration in normal development of a
lobule
 Cause -unknown.
 10% of disappear spontaneously each
year
 Most stop growing after they reach 2-3
cm.

4.  involute in postmenopausal women-
coarse calcifications develop.
 Conversely grow rapidly during
pregnancy, HRT or
immunosuppression-(multiple or
growing fibroadenomas -related to
Epstein barr virus infn)

5. Variants
- juvenile fibroadenomas
- myxoid fibroadenomas-
Carney complex, an autosomal
dominant neoplasia syndrome
(skin mucosal lesions, myxomas, and
endocrine disorders.)

6. Types
Gross-
 Soft
 Hard
 Giant
Microscopy-
 Intracanalicular-mainly cellular tissue
 Pericanalicular-mainly fibrous

7. Gross

8. Intracanalicular

9. Pericanalicular

10. Clinical features
Painless swelling
Smooth, firm, non-tender
Well-localized
Moves freely within the breast
tissue- breast mouse.
Axillary LN not enlarged.

11. Investigations
Mammography
FNAC
USG

12. Mammogram

13. Cytology

14. USG

15. Treatment
Excision of the lump
In pericanalicular type-
periareolar incision
Intracanalicular-submammary
incision

17. Complications
Rarely, sarcomatous change

18. Thank you…