• Luis A Robles, Antonio F Matilla, and Maria Paz Covarrubias.
• Section of Neurosurgery, Hospital CMQ Premier, Puerto Vallarta, Jalisco, Mexico. Electronic address: larob@prodigy.net.mx.
• World Neurosurg. 2020 Jul 1; 139: 387-394.

BackgroundLesions of the skull make up a small but important part of neurosurgical practice. Several systemic disorders may involve the cranial vault including neoplastic and non-neoplastic conditions. Sarcoidosis of the skull is a little-known cause of calvarial involvement that has been rarely reported in the literature. The available information about skull sarcoidosis (SS) is sparse and is not well described; for this reason, we consider that a detailed description of this uncommon condition is necessary.MethodsAn illustrative case of SS is presented; in addition, a PubMed and Scopus search adhering to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines was performed to include studies reporting patients with SS. Different information was analyzed in these cases to describe the characteristics of this condition. Also, different sources of literature were analyzed to complete the description of this clinical entity.ResultsThe search yielded 22 cases of patients with SS showing a variety of clinical manifestations. All studies were case reports. Most patients diagnosed with SS had no previous history of systemic sarcoidosis. Different characteristics of SS are analyzed and described in this paper.ConclusionsThe information collected from this review shows that SS is a rare condition that frequently is observed in patients without previous diagnosis of sarcoidosis. SS may manifest in different ways, and even may be found incidentally in some patients. The diagnosis of SS should be considered when multiple lytic skull lesions are observed, especially in cases of patients without a previous history of malignancy.Copyright © 2020 Elsevier Inc. All rights reserved.

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