Breast Flashcards
what are the four quadrants of the breast
upper inner
lower inner
upper outer
lower outer
at which week does breast development begin
week 4 of gestation
what are the milk lines
parallel lines of glandular tissue which extend from axilla to peritoneum
what are milk line remnants
persistence of epidermal thickenings along the milk lines
define mastalgia
breast pain
define mastodynia
breast pain
who is most susceptible to a breast malignancy
older aged women (older than 50 - chance goes up with age)
define galactorrhea
milk discharge not associated with malignancy
which quadrant of the breast is most common for malignancy
upper outer quadrent (50%)
what are the two main modalities for breast imaging
ultrasound and MRI
what is a fibroadenoma
well-circumscribed, benign, proliferating mass of fibrotic tissue
what is acute mastitis
bacterial infection during breastfeeding causes inflammation of breast
what is the most common bacteria to cause acute mastitis
staph. aureus
what is squamous metaplasia of lactiferous ducts (SMOLD)
keratin plug causes abscess to form within duct
what are the three other names for squamous metaplasia of lactiferous ducts (SMOLD)
recurrent subareolar abscess
periductal mastitis
zuska disease
which two conditions are most associated with squamous metaplasia of lactiferous ducts (SMOLD)
smoking and vitamin A deficiency
what is duct ectasia
white nipple secretions that present as a palpable periareolar mass
who is most affected by duct ectasia
50-60 year old women who haven’t had children
what are the two most common (50%) causes of fat necrosis of the breast
trauma or previous surgery
which two conditions are associated with lymphocytic mastopathy (sclerosing lymphocytic lobulitis)
type 1 diabetes and autoimmune thyroid disease
what are the three categories of benign epithelial lesions of the breast
non-proliferative breast changes
proliferative breast disease
atypical hyperplasia
what are the three principal morphologic changes seen with non-proliferative breast changes (fibrocystic changes)
cystic change
fibrosis
adenosis
are non-proliferative breast changes associated with a risk of cancer
no
does proliferative breast disease without atypia increase your risk for cancer
yes - small increase
what is epithelial hyperplasia of the breast
a type of proliferative breast disease without atypia
increased numbers of luminal and myoepithelial cells within the ducts
what is sclerosing adenosis
a type of proliferative breast disease without atypia
increased number of acini
what is a complex sclerosing lesion
a type of proliferative breast disease without atypia
hardened area of breast tissue that appears as a scar
what is a radial scar
radial sclerosing lesion that has a irregular shape and can closely mimic invasive carcinoma
complex sclerosing lesions have components of what
sclerosing adenosis
papillomas
epithelial hyperplasia
what is a papilloma
a type of proliferative breast disease without atypia
growth in a dilated duct made of branching fibrovascular cores
where is the most common location for a large duct papilloma
lactiferous sinuses of the nipple
where is the most common location for a small duct papilloma
deeper within the duct system
a fibrovascular core is a key distinctive feature in which condition
breast papilloma
define gynecomastia
enlargement of male breast
what are the two main forms of atypical hyperplasia of the breast
atypical ductal hyperplasia
atypical lobular hyperplasia
what is the most common non-skin malignancy in women
breast carcinoma
what is the ratio for women getting breast cancer
1 in 8
in which breast is cancer more common
left
what are the three main types of breast carcinoma, hormonally speaking
luminal
HER2+
triple negative
which receptors are involved in luminal breast carcinoma
ER+
HER2-
which receptors are involved in HER2+ breast carcinoma
overexpression of HER2
which receptors are involved in triple negative breast carcinoma
ER-
PR-
HER2-
what is the most common type of breast cancer in terms of hormone receptors
ER+
what is the least common type of breast cancer in terms of hormone receptors
HER2+
what should a positive hormone receptor IHC look like
brown (right) - indicates update