Halolike Phenomenon Around a Café au Lait Spot Superimposed on a Mongolian Spot |
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| Authors: | Iria Neri M.D. Martina Lambertini M.D. Vera Tengattini M.D. Beatrice Rivalta M.D. Annalisa Patrizi M.D. |
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| Affiliation: | 1. Division of Dermatology, Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy;2. Division of Pediatrics, University of Bologna, Bologna, Italy |
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| Abstract: | An 8‐month‐old Caucasian infant with neurofibromatosis type 1 presented with a congenital plexiform neurofibroma and multiple café au lait spots. A pale area surrounded one of the café au lait spots located on the left gluteus in the area of dermal melanocytosis. This halolike phenomenon results from the disappearance of the Mongolian spot around the café au lait spots, revealing normal pigmented skin. This sign has been described rarely in the literature and the pathogenic mechanism is unclear. |
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