Chemical burn from povidone-iodine: case and review.

Chemical burn is a rare complication of topical polyvinylpyrrolidone-iodine (PVP-I), commonly called povidone-iodine (trade name Betadine, Purdue, Stamford, NJ). This adverse reaction occurred on the buttocks of an eight-year-old male after undergoing a laparoscopic appendectomy involving antiseptic skin preparation using a 10% PVP-I solution. This case is consistent with previous reports in which a chemical burn develops when PVP-I does not adequately dry, pools beneath a dependent body part during surgery, or is placed under an occlusive device.

Multiple pilomatricomas: cutaneous marker for myotonic dystrophy.

We report an interesting case of multiple pilomatricomas (MPs) in a patient with myotonic dystrophy. Pilomatricoma (calcifying epithelioma of Malherbe) is a benign tumor of hair matrix derivation. It usually occurs as a solitary, firm, asymptomatic nodule on the face, neck, or proximal upper extremity.