BACKGROUND: Oral spindle cell carcinoma (SpCC) is a rare variant of oral squamous cell carcinoma (SCC). The aims of this study were to compare the clinicopathologic and immunohistochemical features of oral SpCC with conventional oral SCC. METHODS: Five cases of oral SpCC and 10 cases of oral SCC (five well-differentiated and five poorly differentiated) were evaluated through conventional hematoxylin and eosin staining and immunohistochemical reactions to cytokeratins (CK), vimentin, desmin, smooth muscle actin, muscle-specific actin, S-100 protein, epithelial membrane antigen (EMA), p53, and ki-67. RESULTS: Oral SpCC showed predilection for males on their sixth decade of life, presenting clinically as painful infiltrative ulcers or ulcerated exophytic polypoid masses, preferably located on the alveolar mucosa. Mesenchymal markers were expressed in the spindle cell but not in the carcinomatous component of SpCC, and it was negative in all SCC. CKs AE1/AE3, 6, 14, and EMA were positive on both carcinomatous and spindle cell components of most SpCCs. These tumors also presented higher p53 and ki-67 expression and no CK 1 expression in contrast to well-differentiated SCC. CONCLUSION: Oral SpCC presented a different clinical profile than conventional SCC and histopathologic features and p53 and ki-67 expression closer to poorly differentiated SCC. Besides mesenchymal markers, CK AE1/AE3, 6, 14, and EMA expression on spindle cells may be useful as an adjunct on microscopical differential diagnosis of SpCC.
BACKGROUND:Oral spindle cell carcinoma (SpCC) is a rare variant of oral squamous cell carcinoma (SCC). The aims of this study were to compare the clinicopathologic and immunohistochemical features of oral SpCC with conventional oral SCC. METHODS: Five cases of oral SpCC and 10 cases of oral SCC (five well-differentiated and five poorly differentiated) were evaluated through conventional hematoxylin and eosin staining and immunohistochemical reactions to cytokeratins (CK), vimentin, desmin, smooth muscle actin, muscle-specific actin, S-100 protein, epithelial membrane antigen (EMA), p53, and ki-67. RESULTS: Oral SpCC showed predilection for males on their sixth decade of life, presenting clinically as painful infiltrative ulcers or ulcerated exophytic polypoid masses, preferably located on the alveolar mucosa. Mesenchymal markers were expressed in the spindle cell but not in the carcinomatous component of SpCC, and it was negative in all SCC. CKs AE1/AE3, 6, 14, and EMA were positive on both carcinomatous and spindle cell components of most SpCCs. These tumors also presented higher p53 and ki-67 expression and no CK 1 expression in contrast to well-differentiated SCC. CONCLUSION: Oral SpCC presented a different clinical profile than conventional SCC and histopathologic features and p53 and ki-67 expression closer to poorly differentiated SCC. Besides mesenchymal markers, CK AE1/AE3, 6, 14, and EMA expression on spindle cells may be useful as an adjunct on microscopical differential diagnosis of SpCC.
Authors: Murat Oktay; Tuba Dilay Kokenek-Unal; Bulent Ocal; Guleser Saylam; Mehmet Hakan Korkmaz; Murat Alper Journal: Patholog Res Int Date: 2011-02-20
Authors: Alejandro Donohue-Cornejo; Oslei Paes de Almeida; Celeste Sánchez-Romero; Ronell Bologna-Molina; León Francisco Espinosa-Cristóbal; Juan Carlos Cuevas González Journal: Autops Case Rep Date: 2020-05-29
Authors: Cosima Völkel; Noémi De Wispelaere; Sören Weidemann; Natalia Gorbokon; Maximilian Lennartz; Andreas M Luebke; Claudia Hube-Magg; Martina Kluth; Christoph Fraune; Katharina Möller; Christian Bernreuther; Patrick Lebok; Till S Clauditz; Frank Jacobsen; Guido Sauter; Ria Uhlig; Waldemar Wilczak; Stefan Steurer; Sarah Minner; Rainer H Krech; David Dum; Till Krech; Andreas H Marx; Ronald Simon; Eike Burandt; Anne Menz Journal: Virchows Arch Date: 2021-09-24 Impact factor: 4.064