Fibroadenomas of the breast, are lumps composed of fibrous and glandular tissue. Because breast cancer can also appear as a lump, doctors may recommend a tissue sample (biopsy) to rule out cancer in older patients. Unlike typical lumps from breast cancer, fibroadenomas are easy to move, with clearly defined edges.

Fibroadenomas are sometimes called breast mice or a breast mouse owing to their high mobility in the breast.

The typical case is the presence of a painless, firm, solitary, mobile, slowly growing lump in the breast of a woman of childbearing years.

In the male breast, fibroepithelial tumors are very rare, and are mostly phyllodes tumors. Exceptionally rare case reports exist of fibroadenomas in the male breast, however these cases may be associated with antiandrogen treatment.

A fibroadenoma is usually diagnosed through clinical examination, ultrasound or mammography, and often a needle biopsy sample of the lump.

Fibroadenomas arise in the terminal duct lobular unit of the breast.^{[citation needed]} They are the most common breast tumor in adolescent women. They also occur in a small number of post-menopausal women. Their incidence declines with increasing age, and, in general, they appear before the age of thirty years. Fibroadenomas are partially hormone-dependent and frequently regress after menopause. They are hypovascular compared to typical (especially malignant) neoplasms.

Rafael Ortega (born September 25, 1950 in Panama) is a former professional boxer. The highlight of his career came in 1977, when he won the WBA World featherweight title.

Ortega began his professional career on January 24, 1970 in Colon City, Panama against Roberto Javier. The fight went the four round distance and Ortega was announced as the winner by unanimous decision. Ortega would fight for the first time outside of Panama on February 16, 1972 as he travelled to New York City, United States to face Fernando Jimenez. Ortega arrived in New York with an unbeaten record after 9 fights (including 4 draws) and further added to his wins with an eight round decision victory. He went on to win two more bouts in New York and would also fight in El Salvador during his early career.

On December 15, 1973 Ortega challenged for his first title. The champion was Rigoberto Riasco, who held the Panamanian featherweight title. Riasco retained his title with a twelve round unanimous decision and would later go on to win the WBC super bantamweight title. Over his next 7 fights Ortega compiled a record of 5 wins, 1 loss and 1 draw while fighting in Mexico, Venezuela and South Africa as well as Panama.