CMAJ • SEPTEMBER 15, 2009 • 181(6-7) © 2009 Canadian Medical Association or its licensors 397 A23-year-old man was referred to us with a 4-year history of flesh-coloured, spiny papules around the coronal rim of his glans penis (Figure 1). The papules were 1–2 mm in diameter. The patient felt stigmatized by their appearance. A diagnosis of pearly penile papules (also known as PPP) was made. Pear...

Lichen nitidus (LN) is an uncommon chronic inflammatory skin disease composed of numerous, tiny, shiny, flesh-colored papules that are predominantly observed on the chest, abdomen, glans penis and upper extremities. The distribution of LN is most often localized, but in some cases it can become generalized. Because LN tends to be asymptomatic and presents spontaneous resolution within several y...

Sir, Down’s syndrome (trisomy 21) is a multisystem disorder with a birth incidence of approximately 1 in 700 live births, making it the most common autosomal chromosomal disorder causing mental retardation. Down’s Syndrome is also associated with an increased incidence of cutaneous disorders.[1-4] In particular, there seems to be an increased incidence of xerosis, atopic dermatitis, seborrheic ...

Three of thirteen Oryzomys acritus, Emmons and Patton 2005 (Rodentia: Muridae: Sigmodontinae) and 3 of 17 Oryzomys nitidus, Thomas 1884, collected from Noël Kempff National Park, Bolivia, from 2002 to 2005, tested positive for Leishmania (Leishmania) amazonensis or L. (L.) mexicana and negative for Leishmania (Viannia) spp. using the polymerase chain reaction (PCR). Based on previous records of...