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Müller S, Köhler F, Hendricks A, Kastner C, Börner K, Diers J, Lock JF, Petritsch B, Germer CT, Wiegering A. Brain Metastases from Colorectal Cancer: A Systematic Review of the Literature and Meta-Analysis to Establish a Guideline for Daily Treatment. Cancers (Basel) 2021; 13:900. [PMID: 33669974 PMCID: PMC7924831 DOI: 10.3390/cancers13040900] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/18/2021] [Accepted: 02/18/2021] [Indexed: 02/01/2023] Open
Abstract
Colorectal cancer (CRC) is the third most common malignancy worldwide. Most patients with metastatic CRC develop liver or lung metastases, while a minority suffer from brain metastases. There is little information available regarding the presentation, treatment, and overall survival of brain metastases (BM) from CRC. This systematic review and meta-analysis includes data collected from three major databases (PubMed, Cochrane, and Embase) based on the key words "brain", "metastas*", "tumor", "colorectal", "cancer", and "malignancy". In total, 1318 articles were identified in the search and 86 studies matched the inclusion criteria. The incidence of BM varied between 0.1% and 11.5%. Most patients developed metastases at other sites prior to developing BM. Lung metastases and KRAS mutations were described as risk factors for additional BM. Patients with BM suffered from various symptoms, but up to 96.8% of BM patients were asymptomatic at the time of BM diagnosis. Median survival time ranged from 2 to 9.6 months, and overall survival (OS) increased up to 41.1 months in patients on a multimodal therapy regimen. Several factors including age, blood levels of carcinoembryonic antigen (CEA), multiple metastases sites, number of brain lesions, and presence of the KRAS mutation were predictors of OS. For BM diagnosis, MRI was considered to be state of the art. Treatment consisted of a combination of surgery, radiation, or systemic treatment.
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Affiliation(s)
- Sophie Müller
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Franziska Köhler
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Anne Hendricks
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Carolin Kastner
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Kevin Börner
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Johannes Diers
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Johan F. Lock
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Bernhard Petritsch
- Department of Radiology, University Hospital Wuerzburg, 97084 Wuerzburg, Germany;
| | - Christoph-Thomas Germer
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
- Comprehensive Cancer Centre Mainfranken, University of Wuerzburg, 97084 Wuerzburg, Germany
| | - Armin Wiegering
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
- Comprehensive Cancer Centre Mainfranken, University of Wuerzburg, 97084 Wuerzburg, Germany
- Theodor Boveri Institute, Biocenter, University of Wuerzburg, 97084 Wuerzburg, Germany
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