Malignant Breast Pathology Flashcards
Where do the majority of breast cancers occur? (hint: quadrants)
UOQ
What are the risk factors of breast CA?
- Increased age
- Female
- History of breast CA
- BRCA 1 and BRCA 2 genes
T or F? Breast CA is the leading cause of cancer in women?
FALSE: it’s the 2nd most common
What is non-invasive breast cancer termed?
Carcinoma in-situ
What are the two types of non-invasive carcinomas?
Lobular carcinoma in situ (LCIS)
Ductal carcinoma in situ (DCIS)
What is the most common non-invasive cancer?
DCIS - ductal carcinoma in situ
What is the difference between LCIS and DCIS?
LCIS is confined to the lobules or ducts within the lobules
DCIS is confined to within the DUCTS either in the lobules or surrounding lobules
Where are malignant cells located in DCIS?
Confined within the ducts and does not surround outside tissue
What is the earliest form of cancer that can be detected on ultrasound?
DCIS
SF of ductal carcinoma in situ (DCIS)?
- Microcalcifications
- Distension of ducts
- Hypoechoic mass
What is Paget disease?
Cancer of the epidermis of the nipple
What are patient symptoms of Paget disease?
- Nipple discharge
- Itching
- Eczema like crusting of nipple or redness
What does it mean when breast cancer is invasive?
It has spread to other tissues
What are two ways breast cancer can spread?
- Via blood
- Via lymphatics
What is the most common breast cancer?
Invasive ductal carcinoma (IDC)
Do invasive ductal carcinomas have a good prognosis?
NO
Which quadrant of the breast does IDC usually occur?
UOQ
SF of IDC?
- Hypoechoic
- Spiculated
- Irregular shaped
- Microcalcifications
- Shadowing
- Non-parallel
What is the second most invasive breast malignancy?
Invasive lobular carcinoma (ILC)
Why does ILC have higher rates of being multifocal, multicentric and bilateral than IDC?
Because it’s diffuse rather than focal
SF of invasive lobular carcinoma (ILC)?
- Hypoechoic
- Spiculated
- Irregular, ill-defined
- Shadowing
- NO calcifications
What are major differences in SF between IDC and ILC?
IDC - mass like and has calcifications and a symptom is bloody nipple discharge
ILC - diffuse and no calcifications and “shrinking” of the breast
What are the four types of special-type invasive ductal carcinomas?
- Papillary
- Medullary
- Tubular
- Colloid
Patient symptoms of Medullary carcinoma?
- Palpable
- Mobile
- Soft
- Grows rapidly
- UOQ
SF of medullary carcinoma?
- Hypoechoic
- Well-circumscribed
- Lobulations
- Round
- Vascularity
- Central necrosis