{'fraction_non_alphanumeric': 0.02286453839516825, 'fraction_numerical': 0.014667817083692839, 'mean_word_length': 4.915816326530612, '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': 0, 'zh_pornsignals.json': 0}}
Angiomyofibroblastoma of the vulva with a penile appearance

sebaceous duct and may contain sebaceous glands arising within the cyst. Infundibular cysts are obstructed or occluded follicles which do not contain sebaceous glands or vellus hairs. Several reports revealed cases containing elements of both EVHCs and steatocystoma multiplex. ‘Hybrid cysts’ describe cysts containing combinations of EVHCs, steatocystoma multiplex and epidermoid cysts. In most reported cases, EVHCs are isolated findings. Some cases were associated with other skin disorders such as pachyonychia congenita, or they may be inherited as an autosomal dominant trait. As the father of the proband is also affected, it is likely that our case is inherited. Around 25% of EVHCs resolve spontaneously. This may occur via transepithelial elimination of cyst products. Most of the lesions will persist. Reports suggested treatment success using different modalities including topical retinoic acid and topical 12% lactic acid. Incision and drainage did not result in significant improvement. Huerter and Wheeland reported successful cyst removal on the face using CO2 laser. 9 They used 5 W of power, irradiance of 160 W cm, a 2-mm spot size, and a pulse duration of 0.2 s for the facial lesions and 3 W of power and 100 W cm irradiance for the eyelid lesions. Only slight hyperpigmentation occurred at some of the treated sites. There was no hypertrophic scarring or regeneration of cysts noted. Pulsed erbium : yttrium–aluminium–garnet laser (2940 nm wavelength) using a 2-mm spot size, 250-ls pulse duration at 60.5–63.7 J cm, and 1.9–2 J pulse energy has also been reported effective in treating EVHCs on the trunk. Three to five pulses were delivered to the lesions. The cysts were then expressed with digital pressure and extracted with forceps. The base of the cyst wall was further ablated with three pulses and the areas were allowed to heal by secondary intention. There was also no hypertrophic scarring, hyperpigmentation or recurrence of cysts reported at the telephone follow-up. In summary, we present a young Chinese woman who had EVHCs initially thought to be melanotic or melanocytic dyspigmentation mimicking bilateral naevus of Ota. We propose that EVHCs should be added to the differential diagnosis of facial dyspigmentation.