masto-, mast-, -mastia, -masty +

(Greek: breast; the front of the human chest and either of two soft rounded organs on each side of the chest in women and men; however, with women the organs are more prominent and produce milk after childbirth; also, a milk-producing gland in mammals that corresponds to the human breast)

acromastitis
Inflammation of the nipple or nipples.
amastia, amazia (s) (noun); amastias, amazias (pl)
Being without breasts: Amastias result in the absence of the mammary glands either through surgery or because of a developmental defect.
anisogynecomastia
Unequal enlargement of the male breast; unilateral gynecomastia in the male.
anisomastia
A condition in which the breasts are markedly unequal in size.
bimastism
Having two mammae or breasts.
double mastectomy
Removal of both breasts.
gynecomastia, gynecomasty, gynecomazia
1. Enlargement of the male breast, in a minority of cases accompanied by galactorrhea.

In a few cases, breast development is so marked as to require corrective mastectomy.

2. Excessive development of the male mammary glands, due mainly to ductal proliferation with periductal edema; frequently secondary to increased estrogen levels, but mild gynecomastia may occur in normal adolescence.
3. Also called mammary feminism (older term), gynecomasty (seldom used), gynecomastism (rarely used), gynecomazia (rarely used).
hypermastia
1. An excessive, or abnormal, enlargement of the breasts.
2. Excessively large mammary glands.
hypomastia, hypomazia
Atrophy (decrease in size) or congenital smallness of the breasts.
interstitial mastitis
Inflammation of connective tissue of the breast.
macromastia, hypermastia
Abnormally large breasts.
mastadenoma
A tumor of the breast.
mastadenoma
An adenoma of the breast.

Adenoma is a benign tumor with cells arranged in patterns similar to those of a gland.

mastalgia
Pain in the breast or mammary gland, whether serious or not.

Mastalgia has many causes including injury, infection, and plugged milk ducts.

mastatrophy
Atrophy or wasting away of the breasts.

Cross references of word families that are related, partially or totally, to: "breast, breasts, chest": mammill-; mammo-; mastoido-; mazo-; pectoro-; pleuro-; sterno-; stetho-; thorac-.