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Abdominal Ultrasonography

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Autoimmune Pancreatitis

Abstract

Autoimmune pancreatitis (AIP) type 1 is characterized by diffuse or local enlargement of the pancreas demonstrated by imaging modalities, increased serum IgG4, and pathologic findings of abundant infiltration by IgG4-positive plasma cells, obliterative phlebitis, and storiform fibrosis [1, 2]. Pathologically, AIP type 2 shows lesions with neutrophilic infiltrates representing idiopathic duct-centric chronic pancreatitis [3]. In Japan, AIP type 1 is common, while AIP type 2 is rare, differing from frequencies in the USA and Europe. Abdominal ultrasonography (US) is the initial imaging examination performed following blood tests in patients with jaundice, exacerbation of diabetes mellitus, or abdominal pain – all common symptoms of AIP. Sometimes, AIP is detected in asymptomatic patients by mass screening programs [4]. In this section, we describe US findings in AIP type 1.

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Authors and Affiliations

  1. Department of Gastroenterology, Second Teaching Hospital, Fujita Health University, 3-6-10, Otobashi, Nakagawa-ku, Nagoya, 454-8509, Japan

    Kazuo Inui MD, PhD, Junji Yoshino MD, PhD, Hironao Miyoshi MD, PhD & Satoshi Yamamoto MD, PhD

Authors
  1. Kazuo Inui MD, PhD
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  2. Junji Yoshino MD, PhD
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  3. Hironao Miyoshi MD, PhD
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  4. Satoshi Yamamoto MD, PhD
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Corresponding author

Correspondence to Kazuo Inui MD, PhD .

Editor information

Editors and Affiliations

  1. Department of Internal Medicine, Department of Internal Medicine, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan

    Terumi Kamisawa

  2. Department of Internal Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South Korea)

    Jae Bock Chung

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© 2015 Springer-Verlag Berlin Heidelberg

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Inui, K., Yoshino, J., Miyoshi, H., Yamamoto, S. (2015). Abdominal Ultrasonography. In: Kamisawa, T., Chung, J. (eds) Autoimmune Pancreatitis. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-55086-7_10

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  • DOI: https://doi.org/10.1007/978-3-642-55086-7_10

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-55085-0

  • Online ISBN: 978-3-642-55086-7

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