USMLE® Board Review Exam Apps & Resources

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Skyscape - USMLE® Question of the Week

A 7-year-old boy is brought to the office for evaluation of a neck mass. A week ago, the patient was taken to an urgent care clinic for nasal congestion and sore throat. The symptoms resolved after a few days, but his parents noticed a persistent neck swelling. The patient has no prior medical conditions, and his immunizations are up to date. On physical examination, he appears well and is well nourished. Neck examination shows a mildly tender, 2-cm, midline mass that moves up when the patient swallows. Which of the following is the most likely cause of this patient's lesion?

A	Abnormal migration of neural crest cells

B	Cervical implantation of thymic tissue

C	Dilation of cervical lymphatic channels

D	Incomplete obliteration of a duct

E	Persistence of second branchial arch structures

F	Trapping of skin structures along embryonic fusion lines

iOS & Android Apps

980+ total questions*

USMLE Step 2 CK with First Aid Q&A for the USMLE Step 2 CK

1000+ total questions*

450 Questions, Ans and Rationales

First Aid for the USMLE Step 1

Includes Netters Anatomy Atlas

Anatomy Flash Cards

* In app purchase required

Tutors

Use the World’s most popular USMLE® medical review books content in your program. With Skyscape App’s, students can study Anytime-Anywhere. Tutors can view students progress on a web dashboard. Email us for a demo and bulk purchase options.