Simon Andreasen1,2,3, Marianne H Therkildsen4, Kristine Bjørndal5, Preben Homøe1,3. 1. Department of Otorhinolaryngology and Maxillofacial Surgery, Køge University Hospital, Køge, Denmark. 2. Department of Otolaryngology Head and Neck Surgery and Audiology, Rigshospitalet, Copenhagen, Denmark. 3. University of Copenhagen, Copenhagen, Denmark. 4. Department of Pathology, Rigshospitalet, Copenhagen, Denmark. 5. Department of ORL-Head and Neck Surgery, Odense University Hospital, Odense, Denmark.
Abstract
BACKGROUND: Pleomorphic adenoma is the most frequent salivary gland tumor and is known for its tendency to recur and for its ability to transform to carcinoma ex pleomorphic adenoma (Ca-ex-PA). Along with pleomorphic adenoma demographics, we present the first nationwide study with long-term follow-up on these topics. METHODS: The Danish Pathology Data Bank was searched for parotid pleomorphic adenoma and Ca-ex-PA in the period 1985 to 2010 and all pathology descriptions were reviewed. Ca-ex-PA specimens were reviewed by a pathologist. RESULTS: A total of 5.497 patients were identified and 2.86% had at least one recurrence. An incidence of 4.29/100,000/year was found. The rate of malignant transformation in recurrent pleomorphic adenoma was 3.3%. CONCLUSION: We report an up-to-date assessment of the epidemiology of pleomorphic adenoma. We found an increasing incidence and low recurrence rate compared with previous studies. The risk of Ca-ex-PA for patients with recurrent pleomorphic adenoma was low compared to the literature.
BACKGROUND:Pleomorphic adenoma is the most frequent salivary gland tumor and is known for its tendency to recur and for its ability to transform to carcinoma ex pleomorphic adenoma (Ca-ex-PA). Along with pleomorphic adenoma demographics, we present the first nationwide study with long-term follow-up on these topics. METHODS: The Danish Pathology Data Bank was searched for parotid pleomorphic adenoma and Ca-ex-PA in the period 1985 to 2010 and all pathology descriptions were reviewed. Ca-ex-PA specimens were reviewed by a pathologist. RESULTS: A total of 5.497 patients were identified and 2.86% had at least one recurrence. An incidence of 4.29/100,000/year was found. The rate of malignant transformation in recurrent pleomorphic adenoma was 3.3%. CONCLUSION: We report an up-to-date assessment of the epidemiology of pleomorphic adenoma. We found an increasing incidence and low recurrence rate compared with previous studies. The risk of Ca-ex-PA for patients with recurrent pleomorphic adenoma was low compared to the literature.
Authors: Timo Atula; Jaana Hagström; Anttoni Markkanen; Katri Aro; Anna Ray Laury; Antti A Mäkitie; Caj Haglund Journal: Sci Rep Date: 2022-05-30 Impact factor: 4.996
Authors: Sarah E Nicholas; Wei Fu; Angela L Liang; Regina DeLuna; Luka Vujaskovic; Justin Bishop; Brandi R Page; Harry Quon; Christine Gourin; Carole Fakhry; David Eisele; Ana P Kiess Journal: Adv Radiat Oncol Date: 2021-03-02