Hypoplasia of penis Microphallus Traditionally a distinction is made between a Short penis, a short penis with otherwise normal anatomy, versus microphallus, a short penis with hypospadias. Penile length is the distance between the midline attachment of the gently stretched, flaccid penis above the pubic symphysis and tip of the glans. A short penis should be differentiated from an inconspicuous penis, for instance due to excessive suprapubic fat ("buried"). We also recognize that shortness of a penis is defined by some subspecialists as penile length more than 2.5 SD below the mean. UMLS:C0240701 Length of penis more than 2 SD below the mean for age accompanied by hypospadias. SNOMEDCT_US:276333003