This 25-year-old male patient presented with severe epigastr…

This 25-year-old male patient presented with severe epigastric pain, nausea and vomiting after a 3 day ski weekend with his buddies. Lab tests revealed an increase in serum lipase and liver enzymes. The following transverse image of the epigastric region was obtained. Which one of the following pathologies is most likely considering the information provided?

After a crushing injury to the left calf during a car accide…

After a crushing injury to the left calf during a car accident, a 23-year old woman complains of swelling and severe calf pain, specifically when the area is palpated or she moves her foot. Her pain has not been relieved by medication, and she states she is starting to lose sensation in her foot. Physical examination reveals a swollen calf with shiny skin and an absent pedal pulse.  Gray-scale imaging does not reveal any intimal damage; however, spectral Doppler waveforms are highly resistive in the popliteal artery and gradually diminish as samples are taken distally in the peroneal and posterior tibial arteries. What is the most likely diagnosis?