Calcium oxalate crystals are described as which appearance?

Calcium oxalate crystals are described as which appearance?

• A. Hexagonal
• B. Small squares that contain an x
• C. Dark, needlelike rods
• D. Brown spheres with long spicules

Answer: (B)

Calcium oxalate crystals have distinct microscopic appearances in urine sediment that exam writers often use for identification. In many teaching images, these crystals are shown as small square-shaped particles with an internal cross or “X.” This cross-like pattern helps distinguish them from other crystal types, such as those that appear as hexagonal shapes, dark needlelike forms, or brown spicular spheres. Therefore, the description of small squares containing an X aligns with the commonly illustrated appearance of calcium oxalate crystals in this context, making it the best choice for identification.

Calcium oxalate crystals have distinct microscopic appearances in urine sediment that exam writers often use for identification. In many teaching images, these crystals are shown as small square-shaped particles with an internal cross or “X.” This cross-like pattern helps distinguish them from other crystal types, such as those that appear as hexagonal shapes, dark needlelike forms, or brown spicular spheres. Therefore, the description of small squares containing an X aligns with the commonly illustrated appearance of calcium oxalate crystals in this context, making it the best choice for identification.