{'fraction_non_alphanumeric': 0.03300624442462088, 'fraction_numerical': 0.008028545941123996, 'mean_word_length': 5.0, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 1, 'zh_pornsignals.json': 0}}
Case of penile white sponge nevus repeatedly treated as genital wart

We describe the case of a 16- year- old boy who attended with an asymptom-atic, white and velvety plaque on his penis shaft (figure 1), which had been treated as a genital wart with cryo-therapy, electrocautery and cidofovir cream since childhood. Following a biopsy, based on the histological find-ings, a diagnosis of white sponge nevus (WSN) was made. WSN is a rare auto-somal dominant disorder with irregular penetrance and a benign course without treatment. 1 It typically affects mucous membranes, particularly the oral cavity, where it can mimic infectious, inflam-matory and pre- malignant lesions. 2 The whitish appearance on non- keratinised epithelial surfaces is the result of cytokeratin 4 and cytokeratin 13 gene mutations. Genital WSN is most often mistaken for human papilloma virus (HPV)- induced lesions, but the differen-tial diagnoses also include hypertrophic candidiasis, lichen planus and lichen sclerosus. 2 Since the ‘spongiotic’ aspect is quite pathognomonic, recognition of WSN is crucial to avoid unnecessary interventions.