In this report, we present a case of monoarticular hip involvement in pseudogout presenting as soft tissue abscess on MRI. Monoarticular hip involvement in pseudogout is a rare entity and up to our knowledge this is the first case mimicking soft tissue abscess.
Monarch butterflies are known for their long annual migration. In North America, they make large migrations towards the south starting in August until the first frost. A migration towards the north takes place in the spring. No single individual makes the whole round trip.
Two thousand miles is a long distance to fly if you're a butterfly who lives 6 months, but it is impossible if you live 3 weeks. So they don't. About 50 years ago, scientists discovered that almost all Monarch butterflies come from a sheltered high mountain pine forest west of Mexico City.