23 year-old female presents complaining of progressive right lower quadrant pain after doing "vigorous" pushups. CT abdomen/pelvis below. What’s the diagnosis? (Hint: it’s not appendicitis)

A previously healthy 3 year-old male presents with a one-day history of fever, drooling, and refusal to move his neck. The lateral neck x-ray is shown. What's the diagnosis?

Have you ever had to give a national presentation, but can't find that one ultrasound clip or image that you really need? You could "borrow" it from someone on the internet, but you are secretly afraid that the "owner" of the clip is lurking somewhere in the audience. Well, the guys at the Ultrasound Podcast (www.ultrasoundpodcast.com) have come to your rescue by creating SonoCloud, a free access ultrasound library. At Sonocloud, you will find several categories of ultrasound clips and images for you to view and share,...and again it's FREE. In fact, the only thing you are expected to do is upload some of your own ultrasounds to share.
77 year old male presents to the Emergency Department one week after a motor vehicle crash in which he suffered minor facial injuries. He is now concerned because his eye looks like this. Diagnosis?

79 year old male with headaches, ataxia, falls, and difficulty urinating. What's the diagnosis?

19 year-old male presents with L ankle pain and obvious deformity after jumping out of a window and landing on his inverted foot. What's the diagnosis?

Ultrasound is useful during intubation; here is a video explaining how: http://ultrarounds.com/ultrarounds.com/Visual_Pearl_May_28,_2012.html
Today's Bonus Pearl:
EMRA has developed a great antibiotic guide for the iphone (http://itunes.apple.com/us/app/2011-emra-antibiotic-guide/id393020737?mt=8) or android (https://play.google.com/store/apps/developer?id=Emergency+Medicine+Residents'+Association). This app is a bit pricey ($15.99), but is easy to use and well organized. Enjoy!
This week's visual pearl is an interesting ultrasound of a psoas abscess submitted by Dr. Sa'ad Lahri. He is an Attending physician in the Emergency Department of the Khayelitsha Hospital in Cape Town, South Africa. The video quality is grainy, but it automatically replays so you can watch it a few times.
http://ultrarounds.com/ultrarounds.com/Visual_Pearl_May_14,_2012.html
An alcoholic patient presents with a cough, fever, and very foul smelling breath (worse than usual)
What's the diagnosis? And what are the risk factors?
68 yo man presents with new-onset seizures; his CT is shown below. What is your differential diagnosis?

67 yo male presents with burning substernal chest pain; worse with meals and when supine. What's the diagnosis?
26 year old male with pain when he extends his 4th finger as well as swelling of that digit. Diagnosis?

14 year-old male presents with right-sided testicular pain. What's the diagnosis?

24 year-old male presents following fall from a scaffolding and complains of wrist pain. Diagnosis?

35 year old male with sudden onset of abdominal pain. Diagnosis?

28 y.o. male felt his left knee "pop" after landing from a jump while playing basketball. Knee exam revealed limited knee extension. X-ray is shown. Diagnosis?

20 year old female complains of “itchy” rash to her foot x 1 week and recently the rash has spread to her other other foot and both hands (shown below). No past medical history, no fever or chills, no mucus membranes involvement, no new medications, no tick bites, no travel. She is also 16 weeks pregnant. What’s the diagnosis?
23 year-old male fell off porch while intoxicated. The head CT is shown below. Diagnosis?


64 year old male with emphysema and stage 4 lung cancer presents in respiratory distress. What's the diagnosis?