WorksheetsCPAM
Total questions: 10
Worksheet time: 6mins
Cardiothoracic ratio is calculated by
dividing the thoracic ratio to the cardiac ratio and the value is 50%
dividing the cardiac circumference by thoracic circumference and the value is 50%
dividing the cardiac circumference by thoracic circumference and the value is less 50%
dividing the thoracic circumference by cardiac circumference and the value is more 50%
Below are examples of anterior mediastinal chest masses EXCEPT
Thymoma
Cystic hygroma
Teratoma
Gastric duplication
Identify the lung lesion in the image
Congenital pulmonary airway malformations (CPAM)
Bronchopulmonary sequestration (BPS)
Bronchogenic cyst
Congenital diaphragmatic hernia
Below is true about Congenital Pulmonary Airway Malformations (CPAM) EXCEPT
Unilobar in 80% to 95% of cases
The blood supply is derived from the pulmonary artery
More common in male fetus
Highly associated with aneuploidy
Below is true about the CVR (CPAM Volume Ratio)
CVR is less than 1.6 and there is no evidence of a dominant cyst, the CPAM has a 20% risk for the development of hydrops.
If the CVR is more than 1.6 at presentation, with or without a dominant cyst, there is an 80% chance of hydrops developing.
CVR = [L x H x W (in mm) x 0.52]/Head circumference in mm
All of them
Bronchopulmonary sequestration (BPS) is
Characterized by a mass of nonfunctioning lung tissue that communicates with the bronchial tree.
Seen as an echo dense triangular with obvious pulmonary feeding vessel.
Typically at the right lung base.
75% of prenatally diagnosed cases resolved spontaneously.
The image as shown here is
Congenital Pulmonary Airway Malformation (CPAM)
Congenital high airway obstruction (CHAOS)
Bronchopulmonary sequestration (BPS)
Empyema
What is true about the image as shown here
It is a congenital diaphragmatic hernia.
Couple needs to be counseled about the high rate of recurrence in the subsequent pregnancy.
The risk of associated fetal anomaly is 0.7%.
Karyotyping is mandatory.
This is true about fetal chest masses EXCEPT
In isolated BPS/CPAM that is stable, delivery at term is acceptable.
Long term surgical outcome is excellent in CPAM.
CPAM lesions that regression will not require assessment post delivery.
BPS has a low association with aneuploidy but there are reported cases of recurrence in siblings and offspring.
The maturity of the fetal lung starts at 4 weeks and is divided into
4 phases
5 phases
embrogenic and alveoli phase
None of them
