CBCN – Certified Breast Care Nurse Certification Expert Verified Questions with Detailed Rationales Comprehensive Breast Care Nursing Study Guide | Breast Disease Management | Patient Education | Clinical Practice | Certification Success

CBCN – Certified Breast Care Nurse Certification Expert-
Verified Questions with Detailed Rationales
Comprehensive Breast Care Nursing Study Guide |
Breast Disease Management | Patient Education |
Clinical Practice | Certification Success

Question 1:
Which hormone is primarily responsible for the development of the terminal
duct lobular units (TDLUs) during puberty?
A) Estrogen
B) Progesterone
C) Prolactin
D) Human growth hormone
Rationale: Progesterone is responsible for the development of the terminal
duct lobular units (TDLUs) during puberty, while estrogen promotes ductal
growth. Estrogen primarily stimulates the growth of the ductal system,
whereas progesterone promotes the development of lobular structures, which
are the functional units of the breast.


Question 2:
A 55-year-old woman presents with skin dimpling and retractions on her left
breast. During the clinical breast exam, these findings would be MOST
accentuated when the patient:
A) Contracts the pectoral muscles by placing hands on hips and pressing
down
B) Raises arms straight up to the ears
C) Places arms behind the back
D) Lies in the supine position
Rationale: Skin dimpling and retractions are accentuated when the patient
contracts the pectoral muscles by placing hands on the hips and pressing
down. This maneuver (pectoral muscle contraction) pulls on the Cooper's

,ligaments, making any tethering or retraction more visible. This is a key
technique during clinical breast examination.


Question 3:
Male patients with breast cancer demonstrate a higher risk of exhibiting
which genetic mutation?
A) PALB2
B) MEN1
C) BRCA2
D) MLH1
Rationale: Male patients with breast cancer are more likely to have a BRCA2
mutation. While BRCA1 mutations are more commonly associated with female
breast and ovarian cancers, BRCA2 mutations have a higher penetrance in
males, with lifetime risks estimated at 6-8%. MEN1 is associated with multiple
endocrine neoplasia, and MLH1 with Lynch syndrome.


Question 4:
According to NCCN guidelines, at what age should women at average risk
begin annual screening mammography?
A) Age 40
B) Age 45
C) Age 50
D) Age 55
Rationale: The NCCN guidelines recommend that women at average risk
begin annual screening mammography at age 45. The USPSTF recommends
biennial screening for women aged 50-74, while the American Cancer Society
recommends annual screening from age 45-54 with the option to transition to
biennial screening at age 55.


Question 5:
A patient with a phyllodes tumor is MOST likely to experience metastasis to
which location?

,A) Lung
B) Brain
C) Gallbladder
D) Kidney
Rationale: The lung is the most common location of phyllodes tumor
metastasis. Phyllodes tumors are rare fibroepithelial breast tumors that can
be benign, borderline, or malignant. Malignant phyllodes tumors most
commonly metastasize hematogenously to the lungs, followed by bone and
the brain.


Question 6:
Which of the following is considered a high-risk lesion that increases the risk
of developing invasive breast cancer?
A) Fibroadenoma
B) Atypical ductal hyperplasia (ADH)
C) Sclerosing adenosis
D) Intraductal papilloma
Rationale: Atypical ductal hyperplasia (ADH) is a high-risk lesion that
increases the risk of developing invasive breast cancer by approximately 4-5
times. Lobular carcinoma in situ (LCIS) and atypical lobular hyperplasia (ALH)
are also high-risk lesions. Fibroadenomas, sclerosing adenosis, and intraductal
papillomas are generally benign with only slightly elevated or no increased
risk.


Question 7:
Which of the following organizations evaluates quality measures for breast
care programs and grants accreditation through the National Accreditation
Program for Breast Centers (NAPBC)?
A) American College of Surgeons
B) The Joint Commission
C) Centers for Medicare and Medicaid Services
D) Susan G. Komen for the Cure

, Rationale: The American College of Surgeons monitors quality measures and
grants accreditation through the National Accreditation Program for Breast
Centers (NAPBC). NAPBC accreditation recognizes breast centers that provide
the highest level of quality breast care and undergo a rigorous evaluation
process.


Question 8:
A patient's mammogram report shows a BI-RADS 4 classification. This finding
indicates:
A) Normal study
B) Benign finding
C) Suspicious abnormality; biopsy recommended
D) Highly suggestive of malignancy
Rationale: BI-RADS 4 indicates a suspicious abnormality for which biopsy is
recommended. It is further divided into 4A (low suspicion), 4B (intermediate
suspicion), and 4C (moderate suspicion). BI-RADS 5 indicates highly
suggestive of malignancy (≥95% likelihood).


Question 9:
Which of the following breast cancer risk prediction models incorporates
family history, genetic testing results, hormonal factors, and breast density to
estimate lifetime risk?
A) Gail Model
B) Tyrer-Cuzick Model
C) Claus Model
D) BRCAPRO
Rationale: The Tyrer-Cuzick model (also known as IBIS) incorporates family
history, genetic testing results, hormonal factors, and breast density to
estimate the lifetime risk of breast cancer. The Gail Model uses age, age at
menarche, age at first live birth, number of first-degree relatives, and number
of breast biopsies. The Claus Model focuses on family history, and BRCAPRO
estimates BRCA mutation probability.