Immunohistochemical expression of keratins 6, 7, 8, 14, 16, 18, 19, and MNF-116 pancytokeratin in primary and metastatic melanoma of the head and neck.

Autor: Safadi RA; Associate Professor, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan. Electronic address: safadir@ksau-hs.edu.sa., Bader DH; Oral Medicine specialist, Ministry of Health, Amman, Jordan., Abdullah NI; Consultant Pathologist, King Hussein Cancer Center, Amman, Jordan., Sughayer MA; Full Member and Chairman, Pathology and Laboratory Medicine Department, King Hussein Cancer Center, Amman, Jordan.
Jazyk: angličtina
Zdroj: Oral surgery, oral medicine, oral pathology and oral radiology [Oral Surg Oral Med Oral Pathol Oral Radiol] 2016 May; Vol. 121 (5), pp. 510-9. Date of Electronic Publication: 2015 Dec 19.
DOI: 10.1016/j.oooo.2015.11.016
Abstrakt: Objective: To investigate the immunohistochemical expression (IHCE) of selected keratins in primary cutaneous and mucosal melanoma (pM), and metastatic melanoma (metsM) of the head and neck and to compare their expression to a group of undifferentiated/poorly differentiated tumors of the same anatomic region.
Study Design: IHCE of K6, K7, K8, K14, K16, K18, and K19 were studied in 29 melanomas and 70 cases of non-melanoma tumors of the same anatomic region (neuroendocrine carcinoma, neuroblastoma, olfactory neuroblastoma, sinonasal undifferentiated carcinoma, undifferentiated nasopharyngeal carcinoma, anaplastic large cell lymphoma, poorly differentiated squamous cell carcinoma (PDSCC), and Ewing sarcoma). MNF-116 pancytokeratin was investigated in melanoma.
Results: All studied keratins, except K6, were expressed in melanoma. IHCE of MNF-116, K8, and K18 was higher in metsM compared with pM. K14 and K16 expression was highest in PDSCC.
Conclusions: metsM expresses keratins more than pM, specifically K8, K18, and MNF-116. Keratin positivity in an undifferentiated or poorly differentiated neoplasm does not necessarily exclude the diagnosis of melanoma.
(Copyright © 2016 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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