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Fırat Tıp Dergisi
2022, Cilt 27, Sayı 1, Sayfa(lar) 059-062
[ Turkish ] [ Tam Metin ] [ PDF ]
Strong Diagnostic Marker in Desmoplastic Malignant Melanoma Diagnosis: Can it Be Fascin?
Aylin ORGEN ÇALLI, Mehmet Ali UYAROĞLU
İzmir Katip Çelebi Üniversitesi Atatürk Eğitim ve Araştırma Hastanesi, Tıbbi Patoloji Kliniği, İzmir, Türkiye

Desmoplastic melanoma is a rare variant of melanoma and it does not show the classical clinicopathological features of melanoma. Immunohistochemically HMB-45 and Melan-A negativity in desmoplastic melanoma creates difficulty in diagnosis and causes misdiagnosis. For this reason, additional immunohistochemical markers besides S-100 are needed. In our case series, we aimed to investigate the diagnostic utility of fascin as an ancillary marker for the diagnosis of desmoplastic malignant melanoma. Sections obtained from five desmoplastic malignant melanoma cases diagnosed histopathologically and immunohistochemically were stained by automated slide stainer for immunohistochemistry. The cases showing cytoplasmic immunoreactivity were evaluated as \'positive\' and the ones with no immunoreactivity as \'negative\'. All desmoplastic melanoma cases with immunohistochemically negative for melanocyte markers except S-100 were positive for fascin. Fascin positivity was diffuse and strong in three cases. There is a difficulty in diagnosis of desmoplastic melanoma due to its peculiar clinical and histopathological features. Accurate differential diagnosis is extremely important for the correct treatment of the demoplastic melanoma. Therefore, we think that showing fascin positivity besides S-100 will be also useful in the diagnostic process.

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