ARDMS BREAST REGISTRY STUDY GUIDE 2024 450
QUESTIONS AND CORRECT ANSWERS
What is the anatomic difference between the lobules and lobes of the
breast? - ANSWER-- Several lobules make up a lobe.
- Approximately 15 to 20 lobes make up each breast.
- One lactiferous duct arises from each lobe and travels toward the
nipple.
State the different portions of the lactiferous duct of the breast
beginning deep and ending at the nipple : - ANSWER-- Interlobular
terminal duct
- Extralobular terminal duct
- Interlobular duct
- Lactiferous sinus
- Collecting duct
Describe the anatomic location of the superficial fascia including the
superficial and deep layers within the breast. - ANSWER-- At the breast
the superficial fascia divides into the superficial and deep layers, which
provide an envelope containing all the breast tissues.
- The superficial layer is located in the premammary layer.
- The deep layer is located in the retromammary space.
,What is the smallest functional unit of the breast? - ANSWER-Acini
Acini are considered the : - ANSWER-Milk producing gland
Approximately how many units are in each breast? - ANSWER-There are
hundreds of acini in each breast
Each acini gives rise to its own duct, called ____. - ANSWER-The
terminal duct
What is a TDLU? - ANSWER-Terminal duct lobular unit
What structures make up the TCLU? - ANSWER-Approximately 30 acini
(equaling a lobule) and its associated terminal ducts make up the TDLU.
What is the clinical significance of the TDLU? - ANSWER-Nearly all
breast pathology originates here
What is another name for the mammary layer of the breast? - ANSWER-
Glandular or parenchymal layer of the breast
What is the axillary tail of spence? - ANSWER-The portion of glandular
tissue that extends from the upper outer quadrant of each breast into
the axillary region
,The mammary layer of the breast is composed of epithelial and stromal
tissues. State the function of each tissue type and name several
anatomic structures that make up each tissue type : - ANSWER--
Epithelium is the functional tissue of the breast.
- Epithelial tissue consists of acini, TDLU's, lobules, lobes, and any part
of the lactiferous ducts (including the terminal ducts).
- Stroma is the supportive tissue or framework of the breast.
- Stromal tissue consists of both the interlobular fat and connective
tissue (including Cooper's ligaments, loose and dense connective
tissue).
Name the 3 layers of the lactiferous duct : - ANSWER-- Epithelium
- Myoepithelium
- Basement membrane or adventitia
What is the function of the myoepithelium ? - ANSWER-Propel milk
within the ducts toward the nipple
Which muscle is most anterior -- pectoralis major or minor? - ANSWER-
Pectoralis major lies anterior to the pectoralis minor
What is the scanning significance of visualizing the pectoralis muscles ?
- ANSWER-When the pectoral muscles are visualized on ultrasound, the
, sonographer is sure to have imaged all of the breast tissue and can
interrogate muscle invasion from a breast lesion
Which quadrant of the breast is glandular tissue slightly more
prominent? - ANSWER-- The upper outer quadrant
- Therefore, a larger percentage of breast cancers are found here
A mass in the 2:00 position of the left breast corresponds with what
quadrant? - ANSWER-Upper outer quadrant
A mass in the 2:00 position of the right breast corresponds with what
quadrant? - ANSWER-Upper inner quadrant
A mass in the 8:00 position of the left breast corresponds with what
quadrant? - ANSWER-Lower inner quadrant
A mass in the 8:00 position of the right breast corresponds with what
quadrant? - ANSWER-Lower outer quadrant
What is the milk line? - ANSWER-The milk line represents an anatomic
region of the body where portions of breast tissue may develop
The milk line is located : - ANSWER-From the axilla to the inguinal
region on both right and left sides of the body
QUESTIONS AND CORRECT ANSWERS
What is the anatomic difference between the lobules and lobes of the
breast? - ANSWER-- Several lobules make up a lobe.
- Approximately 15 to 20 lobes make up each breast.
- One lactiferous duct arises from each lobe and travels toward the
nipple.
State the different portions of the lactiferous duct of the breast
beginning deep and ending at the nipple : - ANSWER-- Interlobular
terminal duct
- Extralobular terminal duct
- Interlobular duct
- Lactiferous sinus
- Collecting duct
Describe the anatomic location of the superficial fascia including the
superficial and deep layers within the breast. - ANSWER-- At the breast
the superficial fascia divides into the superficial and deep layers, which
provide an envelope containing all the breast tissues.
- The superficial layer is located in the premammary layer.
- The deep layer is located in the retromammary space.
,What is the smallest functional unit of the breast? - ANSWER-Acini
Acini are considered the : - ANSWER-Milk producing gland
Approximately how many units are in each breast? - ANSWER-There are
hundreds of acini in each breast
Each acini gives rise to its own duct, called ____. - ANSWER-The
terminal duct
What is a TDLU? - ANSWER-Terminal duct lobular unit
What structures make up the TCLU? - ANSWER-Approximately 30 acini
(equaling a lobule) and its associated terminal ducts make up the TDLU.
What is the clinical significance of the TDLU? - ANSWER-Nearly all
breast pathology originates here
What is another name for the mammary layer of the breast? - ANSWER-
Glandular or parenchymal layer of the breast
What is the axillary tail of spence? - ANSWER-The portion of glandular
tissue that extends from the upper outer quadrant of each breast into
the axillary region
,The mammary layer of the breast is composed of epithelial and stromal
tissues. State the function of each tissue type and name several
anatomic structures that make up each tissue type : - ANSWER--
Epithelium is the functional tissue of the breast.
- Epithelial tissue consists of acini, TDLU's, lobules, lobes, and any part
of the lactiferous ducts (including the terminal ducts).
- Stroma is the supportive tissue or framework of the breast.
- Stromal tissue consists of both the interlobular fat and connective
tissue (including Cooper's ligaments, loose and dense connective
tissue).
Name the 3 layers of the lactiferous duct : - ANSWER-- Epithelium
- Myoepithelium
- Basement membrane or adventitia
What is the function of the myoepithelium ? - ANSWER-Propel milk
within the ducts toward the nipple
Which muscle is most anterior -- pectoralis major or minor? - ANSWER-
Pectoralis major lies anterior to the pectoralis minor
What is the scanning significance of visualizing the pectoralis muscles ?
- ANSWER-When the pectoral muscles are visualized on ultrasound, the
, sonographer is sure to have imaged all of the breast tissue and can
interrogate muscle invasion from a breast lesion
Which quadrant of the breast is glandular tissue slightly more
prominent? - ANSWER-- The upper outer quadrant
- Therefore, a larger percentage of breast cancers are found here
A mass in the 2:00 position of the left breast corresponds with what
quadrant? - ANSWER-Upper outer quadrant
A mass in the 2:00 position of the right breast corresponds with what
quadrant? - ANSWER-Upper inner quadrant
A mass in the 8:00 position of the left breast corresponds with what
quadrant? - ANSWER-Lower inner quadrant
A mass in the 8:00 position of the right breast corresponds with what
quadrant? - ANSWER-Lower outer quadrant
What is the milk line? - ANSWER-The milk line represents an anatomic
region of the body where portions of breast tissue may develop
The milk line is located : - ANSWER-From the axilla to the inguinal
region on both right and left sides of the body
