Sudden Cardiac Death

An 18 year old baseball player is hit in the chest by a regulation baseball at around 40 miles per hour and suffered cardiac arrest. He had no underlying heart disease and there was no structural damage to the chest wall, thoracic cavity, or heart itself.

Challenge: What happened?

Shades of Violet

A 45 year old female presents to your clinic complaining of weakness. She has trouble getting out of a chair or reaching for books on high shelves. She cannot identify when it started, but the weakness has been getting worse over the last few months. The weakness is symmetric and associated with mild muscle tenderness. On exam, you do not find any signs of muscle atrophy. Instead, you note the following:

Challenge: What's your diagnosis?

First two images are in the public domain; last two images shown under fair use.

The Spy Who Loved Me

This gentleman is a remarkable 7 feet, 2 inches tall. Note his facial features.

Challenge: What is the cause of this gentleman's condition?

Related Questions:
1. Who is this man and what is he known for?

Image shown under GNU Free Documentation License.

Hard to Pronounce

A five year old child presents with the finding shown above as well as several days complaint of colicky abdominal as well as hip and knee pain. You notice edema in the lower extremities, periarticular swelling and tenderness of the joints without effusion, erythema, or warmth. The stool is guaiac positive; there is also isolated microscopic hematuria.

Challenge: What's the diagnosis?

Image is in the public domain.

Identity, Supremacy, Ultimatum

You're a big fan of Matt Damon and buy the super deluxe froo-froo special collector's DVD version of The Bourne Identity. The opening scene cuts to a stormy night on an Italian fishing boat where one of the crew members pulls a body out of the water. In a scene omitted from the movie version, the medic puts on some EKG leads. With your ultra high definition Blu-Ray-Blue-Tooth TV, you can make this out:

Challenge: What's the abnormality, and what does it mean?

Image shown under fair use.

Localize the Lesion

Challenge: Where's the infarct?

Image shown under fair use.

Bananas

This is EKG week!
A hospitalized patient with known renal failure develops progressive lower extremity muscle weakness. The EKG is shown above.

Challenge: What is the abnormality seen and what is its significance?

Image shown under fair use.

The Sport of Kings

This patient presents with persistent rhinorrhea, oral ulcers, polyarthralgias, myalgias, and cough. A urinalysis shows microscopic hematuria.

Challenge: What's the diagnosis here?

Related Questions:
1. What's the finding shown here?
2. What's the sport of kings?

Image shown under fair use.

Ahhh

Challenge: This man recently completed a course of antibiotics. What's the diagnosis?

Image is in the public domain.

Vegetable

This week focuses on the head, ears, eyes, nose, and mouth exam.

Challenge: What's the diagnosis?

Image shown GNU Free Documentation License.