Breast Conditions Flashcards
What is the fisherman paradigm?
That breast cancer is predominately a systemic disease at outset. It is neccessary to eradicate micro metastases with systemic therapies;
- hormonal
- chemo
- biological (herceptin)
What are the clincially relevant risk factors for breast cancer?
- female
- growing older
- gene mutations
- atypical ductal or lobular hyperplasia
- lobular carcinoma in sity
- atypical epithelial hyperplasia
What are the epidemiological risk factors for breast cancer?
- birth of first child after age of 30
- consumption of an alcoholic beverage one or more times per day
- early menarche
- FHx of breast cancer
- previous breast cancer
- nulliparity
- postmenopausal obesity
What are the most common symptoms of breast cancer?
Dimpled or depressed skin
Visible lump
Nipple chance e.g. inversion
Bloody discharge
Texture change
Colour change
_____ ________ is the most common histologic type of breast cancer, accounting for as many as __% of breast malignancies.
Ductal carcinoma is the most common histologic type of breast cancer, accounting for as many as 80% of breast malignancies.
What are the typical findings of ductal carcinoma?
Stellate solid mass or pleomorphic causing calcifications
Malignant solid mass may be circular and the calcifications may be non-casting
How is definitive diagnosis of ductal carcinoma made?
Image-guided tissue core biopsy
DCIS is most commonly _________ and perceived on screening mammography as malignant ________, usually ________ and of the ______ type
DCIS is most commonly nonpalpable and perceived on screening mammography as malignant calcifications, usually pleomorphic and of the noncasting type
How is definitive diagnosis of DCIS made?
Stereotatic vacuum assisted core biopsy
Invasive lobular carcinoma spreads diffusely with a typical histologic ____ ___ pattern
Invasive lobular carcinoma spreads diffusely with a typical histologic indian file pattern
LCIS is a risk factor for what?
Invasive carcinoma of the ductal type
What are the two variations of breast surgery?
Breast-conserving surgery (BCS)
Mastectomy
What is the preferred treatment for breast cancer?
Breast conserving surgery
What forms can BCS take?
Wide local excision with or without an oncoplastic procedure
What is an essential component of BCS?
Radiation therapy
How is irradiation used in breast conserving surgery?
total dose of whole breast irradiation of 4500–5000 centigrays is administered in fractions using opposed tangential fields
course usually administered in daily fractions (5 days per week) for 3–6 weeks.
A boost dose of irradiation to the tumor bed increases the target dosage to 6000–6500 centigrays.
What is a modified radical mastectomy?
Total mastectomy
Removes the entire breast, including the overlying skin and axillary lymph nodes
What is the modification with modified radical mastectomy?
Preservation of the pectoralis major muscle, facilitates improved wound healing and, potentially allows reconstruction
Who are candidates for breast reconstruction?
Most women who require or request mastectomy
Immediate or delayed breast reconstruction following conventional ___-____ _____ ________ (____) often results in prominent ____ on the new breast and a paddle of skin that is of a different ____ and ____.
Immediate or delayed breast reconstruction following conventional non-skin sparing mastectomy (NSSM) often results in prominent scars on the new breast and a paddle of skin that is of a different color and texture.
___-______ __________ (___) preserves most of the overlying skin during an immediate breast reconstruction (IBR) thus leading to a superior ______ outcome
Skin-sparing mastectomy (SSM) preserves most of the overlying skin during an immediate breast reconstruction (IBR) thus leading to a superior aesthetic outcome
How can breast reconstruction be achieved?
- breast prosthesis
- latissimus dorsi myocutaenous flap (usually plus a breast prosthesis)
- deep inferior epigastric perforator free flap (DIEP)
- transverse rectus abdominis myocutaenous (TRAM) flap
- superior/inferios gluteal artery perforator (S-GAP, I-GAP) free flaps
What determines choice of reconstruction method?
- body habitus
- co-morbidity
- smoking history
- size and shape of her breasts
- preference
- surgeons experience
What are the indications for post-mastectomy RT?
More than 3 nodes
+ve surgical margins
Tumours larger than 5cm
Adjuvant therapy;
_________ ____________, often called ___________, was found to be more effective than the single-drug therapies.
Adjuvant therapy;
multidrug chemotherapy, often called polychemotherapy, was found to be more effective than the single-drug therapies.
What adjuvant systemic therapies are available?
Chemotherapy
Hormonal therapy
Targeted therapy
What is the most commonly used hormonal therapy?
Tamoxifen
What is herceptin (trastuzumab,TZ)?
Recombinant humanized monoclonal antibody which targets HER-2
What is bevacizumab
Recombinant humanized monoclonal antibody against vascular endothelial growth factor
First line therapy for metastatic breast cancer
What is lapatinib?
Dual inhibitor of epidermal growth factor receptor (EGFR) and human epidermal growth factor receptor 2 (HER-2) tyrosine kinases
When is lapatinib indicated for use?
It is indicated for use in combination with capecitabine for the treatment of patients with advanced breast cancer or metastatic breast cancer (MBC) whose tumors overexpress HER-2 (ErbB2) and who have received previous treatment that included an anthracycline, a taxane, and herceptin.
What is the commonest benign neoplasm of the breast and how is it usually diagnosed?
Fibroadenoma
Diagnosed as palpable mass (1-3cm) in the early reproductive years
Confirmed with US core biopsy