Journal
CLINICAL IMAGING
Volume 60, Issue 2, Pages 180-185Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.clinimag.2019.12.006
Keywords
Phosphatase and tensin homolog; Cowden syndrome; Lhermitte-Duclos disease; Dysplastic cerebellar gangliocytoma; Bannayan-Riley-Ruvalcaba syndrome; PTEN hamartoma tumor syndrome
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The phosphatase and tensin homolog (PTEN) located at 10q23.31 is a tumor suppressor gene expressed ubiquitously, and loss of function mutations lead to aberrant growth, angiogenesis, and an increased risk for a variety of tumors. PTEN mutations have been associated with multiple abnormalities in the central nervous system, and a number of clinical phenotypes are now attributed to germline PTEN mutations, collectively referred to as PTEN hamartoma tumor syndrome (PHTS). Most notably, these include Cowden syndrome (CS), Bannayan-Riley-Ruvalcaba syndrome (BRRS), and autism spectrum disorders with macrocephaly. It is important to recognize the neuroimaging features associated with PTEN mutations to not only avoid misdiagnosis in cases of known PHTS but also to guide genetic testing in patients who do not yet have an established diagnosis. In this review, the central nervous system imaging features of PTEN-related disorders are discussed.
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