Key result
Isolated subcutaneous psammomatous melanotic schwannoma poses a challenging histological diagnosis that cannot exclude malignancy.
Psammomatous melanotic schwannoma presents a challenging histological diagnosis where malignancy cannot always be formally excluded.
Histological uncertainty in isolated subcutaneous PMS warrants expert review and cautious follow-up; leaves open standardized management for non-syndromic cases.
Psammomatous melanotic schwannoma (PMS) is a rare pigmented tumor that can be part of the Carney complex. Here, we describe the case of a 35-year-old female patient presenting an isolated subcutaneous PMS. Histopathological analysis could not formally exclude the malignant nature of the tumor. The challenging histological diagnosis and consequently the management of the patient are described.
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Merat et al. (2015) studied this question. Psammomatous melanotic schwannoma presented as an isolated subcutaneous tumor in a 35-year-old female, posing a challenging histological diagnosis that could not formally exclude malignancy.
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