Published online by Cambridge University Press: 06 June 2020
Many diseases that have a systemic distribution may involve the gastrointestinal (GI) tract and liver. Furthermore, diseases that usually manifest within one extra-gastrointestinal organ or system may also involve the GI tract, either directly or as a result of treatment for the extra-GI disease. This chapter focuses initially on five systemic diseases that can have GI manifestations: sarcoidosis, amyloidosis, mast cell diseases, IgG4-related disease, and Behçet’s disease, and then discusses diseases with cutaneous manifestations and their effect(s) on the GI tract. Systemic diseases may become manifest within the GI tract in the context of a known condition. When this occurs, the cause of the GI disease may be obvious. Alternatively, the GI tract features may represent the presenting phase of the disease, which could already be active but subclinical at other sites. The differential diagnosis of certain histopathological features associated with GI tract manifestations of systemic disease, e.g. granulomas, may be wide. Therefore, careful clinicopathological correlation is essential. Finally, treatments for some extra-GI conditions may cause GI-related side effects, e.g. methotrexate therapy for psoriasis.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.