A 24-year-old woman arrives in the emergency center in active labor. She is at term, but received no prenatal care after 16 weeks of gestation when she lost her insurance coverage. The mother has an uncomplicated vaginal delivery. You are paged shortly after birth when the baby is noted to have respiratory distress. The infant has diminished breath sounds on the left, and the PMI is shifted toward the right. A chest radiograph reveals a large multiloculated mass in the left hemithorax. The NG tube you placed earlier reveals the stomach to be below the diaphragm. Which of the following is the most likely diagnosis at this point?

a. Cystic adenomatoid malformation

b. Congenital diaphragmatic hernia

c. Bronchogenic cysts

d. Congenital lobar emphysema

e. Congenital pneumonia

the answer is below…

The United States Medical Licensing Examination, or USMLE for short, is a three-part licensing examination that is required in order to receive a license to practice medicine within the United States.

The USMLE assesses a physician’s ability to apply knowledge, concepts, and principles, and to determine fundamental patient-centered skills that are important in health and disease and that constitute the basis of safe and effective patient care.Examination committees composed of medical educators and clinicians from across the United States and its territories prepare the examination materials each year.

This exam is designed by the Federation of State Medical Boards and the National Board of Medical Examiners to determine whether or not an individual understands and can apply the knowledge necessary to practice medicine safely and intelligently.

The USMLE is actually comprised of three different exams that are referred to as steps, which examine the individual’s knowledge of specific topics related to the field of medicine such as basic science, medical knowledge, medical skills, clinical science, and the application of all of these skills and areas of knowledge in the medical field.

All three steps of the USMLE include a series of computerized multiple-choice questions, but the format of the exam and the information covered in each multiple-choice section is different for each step of the USMLE. The USMLE Step II also has a clinical skills portion that examines an individual’s ability to work with real patients and the USMLE Step III has a computerized patient simulation portion in addition to the multiple-choice section of the exam. In order for an individual to receive a license to practice medicine, the individual must pass all three steps of the USMLE.

Medical doctors with an M.D. degree are required to pass this examination before being permitted to practice medicine in the United States of America

The correct answer is a; Cystic adenomatoid malformation.[1]

Congenital cystic adenomatoid malformation (CCAM) is thought to arise from an embryonic disruption before the thirty-fifth day that causes improper development of bronchioles. The cystic mass is usually identified on prenatal ultrasound around the twentieth week. Large lesions may compress the affected lung and cause pulmonary hypoplasia, which may cause midline shift away from the lesion. Treatment is typically surgical excision of the affected lobe. Some patients may be at risk for primary pulmonary malignancy.