Corona of glans penis

The corona of glans penis refers to the circumference of the base of the glans penis in human males which forms a rounded projecting border, overhanging a deep retroglandular sulcus, behind which is the neck of the penis.

It is the location where some males may develop Hirsuties papillaris genitalis, or "pearly penile papules", a common and harmless condition.

The studies of human microbiota communities are growing rapidly : "a recent (July 2013) PubMed search using the term 'microbiome' revealed more than 4,200 publications. At the same time, characterization of the male genital tract communities has always lagged behind investigations in other body sites: 'penis microbiome' revealed seven publications, 'urethra microbiome' four, 'coronal sulcus microbiome' two, and 'male genital tract microbiome' one publication, while 'semen microbiome' produced no results. Nevertheless, the male genital tract microbiota has been researched by applying cultures and 'old' molecular methods for several decades. It is generally accepted that a microbiota exists in the lower male genital tract. The penis itself provides distinct anatomical environments in the urethra and coronal sulcus".