Alopecic and Aseptic Nodules of the Scalp with Trichoscopic and Ultrasonographic Findings
نویسندگان
چکیده
Alopecic and aseptic nodules of the scalp (AANS) is a rare entity, etiology of which is already unknown. It consists of a few dome-shaped, skin-colored nodules associated with nonscarring alopecia. They are usually located in the upper part of the occiput and surrounded by normal scalp. Most of the times, a biopsy is performed to make an accurate diagnosis. AANS have a good prognosis and even can resolve spontaneously. We present a new case of this entity with the description of trichoscopic and ultrasonographic findings that have recently been reported. These noninvasive techniques are useful for the diagnosis and could replace histological examination in the near future.
منابع مشابه
Pseudocyst of the Scalp
Pseudocyst of the scalp is described in the Japanese literature as a skin-colored cystic tumor localized on the forehead, whereas alopecic and aseptic nodules of the scalp are described in the French literature as asymptomatic nodules on the scalp that lack a pseudocyst-like architecture. The etiology of these diseases is unknown, but the lesions are likely due to follicular occlusion. Here, we...
متن کامل“Alopecic and Aseptic Nodules of the Scalp” and “Pseudocyst of the Scalp”: 2 Different Conditions or One Single Entity?
The first of the 2 terms used was: “Pseudocyst of the scalp” and was first described in 1992 by Iwata et al. [1] in a report of 19 Japanese patients presenting with alopecia and a solitary subcutaneous tumor with a histologically ill-defined cyst wall. Some years later, in 1998 in France, Chevallier [2] reported 3 cases described in French as 'noninfectious abscess of the scalp with alopecia'. ...
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histopathology does not always reveal pseudocysts. However, Sang Sing and coworkers argue that the 2 are distinct conditions, as biopsies reveal pseudocysts in the latter but not in the former. In conclusion, AANS is an emerging entity in the literature, is relatively unknown, and thus is likely underdiagnosed. It is diagnosed by the presence of alopecic, aseptic nodules on the scalp and the ab...
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