1. A 1-year-old patient presents with pain and a palpable mass in the right upper quadrant. This image was taken over the palpable mass. What is the most likely diagnosis of a lesion in the bowel that...

1. A 1-year-old patient presents with pain and a palpable mass in the right upper quadrant. This image was taken over the palpable mass. What is the most likely diagnosis of a lesion in the bowel that presents with this target sign pattern?

2. This 7-year-old patient presents with severe right lower quadrant pain with fever, nausea, and vomiting. What is seen in this image of the right lower quadrant? What are the arrows pointing to?