Aprimary care provider notes painless, hard lesions on a patient's external ears that expel a white crystalline substance when pressed. what diagnostic test is indicated?

The right answer is Tophus.

A tophus (tophi in plural) is a subcutaneous deposit of uric acid crystals surrounded by inflammatory cells. They are most commonly found in ligaments and soft tissues around the joints, as well as on the ears or Achilles tendon. The tophus is a classic manifestation of the most advanced forms of gout.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

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