Figure 1From: Unusual presentation of cactus spines in the flank of an elderly man: a case report Erythematous papules on physical examination. Digital photograph of our patient's right flank demonstrates a cluster of 3 mm erythematous papules. Papules were positive for central ulceration and central spiny growth extensions up to 4 to 5 mm in length. Images captured of lesions on profile (left panel) and close up (right panel).Back to article page