Previous Pathology Case Challenges

An 81-year-old man presents with a 9.0 cm intramuscular neck mass. Gross examination reveals a soft, yellow to gray-white, well-delineated, non-encapsulated, focally hemorrhagic tumor encased in red-brown skeletal muscle.

A 62-year-old woman presents with abdominal pain and nausea. A CT scan shows a well-circumscribed, multilocular mass with a prominent central scar in the tail of the pancreas.