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Updated: Sep 2, 2025
Establishment of a Clinic-based Biorepository
Published on: May 29, 2017
Basal Cell Adenoma and Basal Cell Adenocarcinoma: a 50-year Experience From a Single Institution
Miguel Rito1,2, Susana Esteves3, Isabel Fonseca4,5
1Serviço de Anatomia Patológica, Instituto Português de Oncologia de Lisboa, R. Prof. Lima Basto, 1099-023, Lisbon, Portugal. miguelrito@gmail.com.
Background:
Basal cell adenoma (BCA) and adenocarcinoma (BCAd) are two of the least frequent salivary gland tumors. We describe the largest series of these neoplasms, spanning over a period of 50 years (1970-2020), diagnosed and treated in a single Institution.
Methods:
Sixty-eight cases were identified. Clinical and pathological data were collected and correlated with outcome.
Results:
Forty-one BCA and 27 BCAd were identified. BCA cases had almost pristine prognosis, with only a relapse in a tumor inadequately excised. Ten patients with BCAd developed metastases, and 14 died from the disease. The 2-year and 5-year survival was of 76% and 42%.
Conclusions:
The importance of adequate excision is reinforced in BCA, with no recurrences occurring when margins were negative. Contrary to previous reports, BCAd was not associated with a good prognosis. A better understanding of the genetics of these neoplasms may identify therapeutic options when dealing with inoperable or metastatic disease.
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