Diagnostic utility of CD117 in an unusual adenoid cystic carcinoma of the upper lip

• Autores: Gaete, Rodrigo, Ahumada, Richard, Cortés, Claudia, Ahumada, Karina, Aitken-Saavedra, Juan
• Formato: artículo
• Fecha de Publicación: 2024
• Institución: Universidad Peruana Cayetano Heredia
• Repositorio: Revistas - Universidad Peruana Cayetano Heredia
• Lenguaje: español; inglés
• OAI Identifier: oai:revistas.upch.edu.pe:article/5321
• Enlace del recurso: https://revistas.upch.edu.pe/index.php/REH/article/view/5321
• Nivel de acceso: acceso abierto
• Materia: adenoid cystic carcinoma; CD117; salivary gland neoplasm; carcinoma adenoide cístico; neoplasia das glândulas salivares

Adenoid cystic carcinoma (ACCC) is a malignant neoplasm of the salivary gland, of slow evolution but aggressive behavior, which frequently occurs in the palate; however, in the upper lip, where more benign neoplasms are usually found, its presence is scarcely reported. We report the case of a 63-year-old woman, referred for presenting a nodule in the right upper lip, with benign appearance, firm consistency, circumscribed, mobile, painful to palpation, with no determined time of evolution and whose histopathological study showed a proliferation of angular and hyperchromatic cells with scarce cytoplasm, organized in a cribriform pattern and predominantly tubular. An immunohistochemical study was performed, which showed positivity for SMA, p63 and CD117 with a Ki-67 of approximately 10%. These results confirm the diagnosis of CAC with tubular pattern, highlighting the role of CD117 for the differential diagnosis with polymorphous adenocarcinoma. The patient was referred for surgical treatment and radiotherapy, and after one year of follow-up she maintained a good clinical behavior.