Figure 1. Urine sediment of an adult (light field optical microscopy, 400x). Image of pigmented aspect cylinders with reddish-brown color. This finding, together with other laboratory data, suggests that the cylinders are formed by myoglobi.
We present the case of a patient of 25 years who came to the Emergency Service of our Hospital by presence of coluria on two occasions since the previous day. From a penitentiary center, the patient recognized dependence on marijuana denied the consumption of other toxic substances. In the anamnesis he affirmed have performed intense exercise during the last two days.