“…Some metabolic risk factors have been previously described in the Yucatan population. Mayan patients with stones have a dramatic prevalence of metabolic disorders, such as hypocitraturia (91.3%), hypomagnesuria (68.5%), hypercalciuria (42.1%), hyperuricemia (33.3%), hyperuricosuria (26.6%), and hyperoxaluria (36.5%) [ 10 , 11 ]. Nevertheless, none of these metabolic risk factors were identified in the patient discussed here, which underlines the relevance of occupational, environmental, and lifestyle factors that may play a key role in lithiasis, such as extensive sunlight exposure and dehydration.…”