Dermatology: Practical and Conceptual Dermatology Practical & Conceptual Letter | Dermatol Pract Concept. 2021.11(3): e2021043 1 Bevacizumab-Induced Geographic Tongue Marta Martinez-Garcia, Jorge Roman-Sainz, Nicolás Silvestre-Torner, Sergio Tabbara Carrascosa Dermatology Service. Severo Ochoa University Hospital, Leganés, Madrid Key words: Bevacizumab, geographic tongue, self-solving, infiltrating ductal carcinoma, vascular endothelial growth factor protein Citation: Martinez-Garcia M, Roman-Sainz J, Silvestre-Torner N, Tabbara Carrascosa S. Bevacizumab-induced geographic tongue. Dermatol Pract Concept. 2021.11(3): e2021043. DOI: https://doi.org/10.5826/dpc.1103a43 Accepted: November 23, 2020; Published: July 8, 2021 Copyright: ©2021 Martinez-Garcia et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License BY-NC-4.0, which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original authors and source are credited. Funding: None. Competing interests: The authors have no conflicts of interest to disclose. Authorship: All authors have contributed significantly to this publication. Corresponding author: Marta Martínez García, Dermatology Service. Severo Ochoa University Hospital, Leganés, Madrid. E-mail: martamgml@yahoo.es Introduction Geographic tongue condition, or benign migratory glossitis, is a self-limited and often recurrent process, which occurs in around 2.5%. of the general population. The diagnosis is clinical and is characterized by the presence of atrophic areas located on the back and lateral edges of the tongue, caused by the absence of filiform papillae. Its cause is unknown, it is associated with multiple systemic diseases and occasionally with drug use. Case Presentation Here we present a case of a 43-year-old patient diagnosed with infiltrating Ductal Carcinoma. 1 year later, he presented tumor recurrence and treatment was started with capecitavin (1500 mg/m2 for 14 days) and bevacizumab (15 mg/m2 every 21 days), obtaining complete remission. In the last 12 months he underwent maintenance therapy with bevacizumab (15 mg/m2/21 days). In the last quarter of the last 12 months the patient reported the appearance of migratory lesions located on the back of the tongue, which evolved in outbreaks and were accompanied by pain and stinging with the ingestion of certain foods. The patient reported no clear relationship with the administration of bevacizumab. On the first examination, several atrophic plaques were observed, surrounded by a slightly elevated, white, keratotic border, arranged in a concentric fashion (Figure 1). Following 2 follow-up months, an additional examination was per- formed. A notable spontaneous improvement of the lesions was observed (Figure 2). Conclusions The association of the geographic tongue condition with the use of bevacizumab, whose target is the vascular endo- thelial growth factor protein A (VEGF-A), has recently been described [1]. VEGF-A activity blockade could impede the normal reparative capacity of the epithelium at the level of the lingual mucosa, which could explain the development of these lesions. The increasing use of this type of drug as a treatment for multiple tumors might facilitate the appearance of new cases of geographic tongue. An in-depth knowledge of the recently described association of the geographic tongue condition follow- ing bevacizumab use will prevent misdiagnosis and unnecessary treatment in these patients, who are often immunosuppressed. 2 Letter | Dermatol Pract Concept. 2021.11(3): e2021043 References 1. Sundar S, Burge F. Geographical tongue induced by ax- itinib. BMJ Case Rep. 2015; 2015:bcr2015211318. 2015 Oct 16. DOI:10.1136/bcr-2015-211318. PMID:26475876 Figure 1. Atrophic plaques surrounded by a keratotic border Figure 2. Improvement of lesions