The influence of puberty on vitamin D status in obese children and the possible relation between vitamin D deficiency and insulin resistance.

Background: Puberty can affect vitamin D levels.

Objectives: The goal of this study was to analyze the relation between vitamin D deficiency and puberty in obese Spanish children, along with the possible interrelation between vitamin D status and degree of insulin resistance.

Methods: A cross-sectional study was carried out, in which clinical and biochemical data were gathered from 120 obese and 50 normal weight children between January 2011 and January 2013.

Cervical lymphadenitis caused by Mycobacterium lentiflavum.

We report a case of human infection caused by Mycobacterium lentiflavum and review the literature for infections caused by this bacterium. The patient was a 19-month-old boy with involvement of a cervical lymph node. Surgical removal of the lymphadenopathy was both diagnostic and curative.