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      Isolated angioedema of the bowel due to C1 esterase inhibitor deficiency: a case report and review of literature

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          Abstract

          Introduction

          We report a rare, classic case of isolated angioedema of the bowel due to C1-esterase inhibitor deficiency. It is a rare presentation and very few cases have been reported worldwide. Angioedema has been classified into three categories.

          Case presentation

          A 66-year-old Caucasian man presented with a ten-month history of episodic severe cramping abdominal pain, associated with loose stools. A colonoscopy performed during an acute attack revealed nonspecific colitis. Computed tomography of the abdomen performed at the same time showed a thickened small bowel and ascending colon with a moderate amount of free fluid in the abdomen. Levels of C4 (< 8 mg/dL; reference range 15 to 50 mg/dL), CH50 (< 10 U/mL; reference range 29 to 45 U/ml) and C1 inhibitor (< 4 mg/dL; reference range 14 to 30 mg/dL) were all low, supporting a diagnosis of acquired angioedema with isolated bowel involvement. Our patient's symptoms improved with antihistamine and supportive treatment.

          Conclusion

          In addition to a detailed comprehensive medical history, laboratory data and imaging studies are required to confirm a diagnosis of angioedema due to C1 esterase inhibitor deficiency.

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          Most cited references6

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          Symptoms, course, and complications of abdominal attacks in hereditary angioedema due to C1 inhibitor deficiency.

          Recurrent abdominal attacks belong to the cardinal and most distressing symptoms of hereditary angioedema (HAE) due to C1 inhibitor deficiency. They are characterized by crampy pain, but may include vomiting, diarrhea, and other features. Detailed clinical data about the symptoms and course of abdominal attacks have not been reported. We retrospectively observed a total of 33,671 abdominal attacks in 153 patients with HAE including a prospectively examined subgroup of 23 patients. Symptoms, course, frequency of attacks, and complications were analyzed. The relation of mild, moderate, and severe attacks was 1:1.4:5.6 in the prospective part of the study. Extra-abdominal symptoms preceded the abdominal symptoms. The mean maximal pain score was 8.4 (range 1-10). Vomiting occurred in 73% (24,696) and diarrhea in 41% (13,682) of the attacks. Circulatory collapse accompanied 4.4% (1,468) of the attacks, with loss of consciousness (LOC) occurring in 2.2% (739). Nine patients could clearly distinguish two types of abdominal attacks: vomiting and diarrhea. Rare complications included tetany, hemorrhagic stools, and intussusception of the colon. In 28% (43) of the patients, recurrent abdominal attacks had started before the characteristic swelling of the skin had ever occurred. A model is proposed to classify the severity of the attacks and to describe the clinical course. Abdominal attacks in HAE constitute a more disabling and complex syndrome than previously assumed. Our results add to the understanding of symptoms and course of HAE and may aid in the early recognition of an impending attack and improve clinical management.
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            Hereditary angiodema: a current state-of-the-art review, VII: Canadian Hungarian 2007 International Consensus Algorithm for the Diagnosis, Therapy, and Management of Hereditary Angioedema.

            We published the Canadian 2003 International Consensus Algorithm for the Diagnosis, Therapy, and Management of Hereditary Angioedema (HAE; C1 inhibitor [C1-INH] deficiency) in 2004. To ensure that this consensus remains current. In collaboration with the Canadian Network of Rare Blood Disorder Organizations, we held the second Canadian Consensus discussion with our international colleagues in Toronto, Ontario, on February 3, 2006, and reviewed its content at the Fifth C1 Inhibitor Deficiency Workshop in Budapest on June 2, 2007. Papers were presented by international investigators, and this consensus algorithm approach resulted. This consensus algorithm outlines the approach recommended for the diagnosis, therapy, and management of HAE, which was agreed on by the authors of this report. This document is only a consensus algorithm approach and continues to require validation. As such, participants agreed to make this a living 2007 algorithm, a work in progress, and to review its content at future international HAE meetings. There is a paucity of double-blind, placebo-controlled trials on the treatment of HAE, making levels of evidence to support the algorithm less than optimal. Controlled trials currently under way will provide further insight into the management of HAE. As with our Canadian 2003 Consensus, this 2007 International Consensus Algorithm for the Diagnosis, Therapy, and Management of HAE was formed through the meeting and agreement of patient care professionals along with patient group representatives and individual patients.
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              HEREDITARY ANGIO-NEUROTIC ŒDEMA

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                Author and article information

                Journal
                J Med Case Reports
                Journal of Medical Case Reports
                BioMed Central
                1752-1947
                2011
                14 February 2011
                : 5
                : 62
                Affiliations
                [1 ]Department of Gastroenterology, School of Health and Medical Sciences Seton Hall University, South Orange, NJ, USA
                [2 ]Department of Internal Medicine, Trinitas Hospital, NJ, USA
                [3 ]Department of Gastroenterology, Trinitas Hospital, NJ, USA
                Article
                1752-1947-5-62
                10.1186/1752-1947-5-62
                3089795
                21320328
                e1a5641b-4e86-49d7-a441-4f6055e84e68
                Copyright ©2011 Kothari et al; licensee BioMed Central Ltd.

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 25 December 2009
                : 14 February 2011
                Categories
                Case Report

                Medicine
                Medicine

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