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Case Study
- Coexisting Mucinous Cystic Neoplasm of the Pancreas and Type 1 Autoimmune Pancreatitis
- Mee-Jeong Kim, Tae Jun Song, Hyoung Jung Kim, Song-Cheol Kim, Myung-Hwan Kim, Seung-Mo Hong
- J Pathol Transl Med. 2019;53(2):125-128. Published online November 14, 2018
- DOI: https://doi.org/10.4132/jptm.2018.10.25
- 7,843 View
- 115 Download
- 2 Web of Science
- 5 Crossref
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Abstract
PDF - Type 1 autoimmune pancreatitis (AIP1) is an IgG4-related systemic disease that mimics tumors. We report a rare case of AIP1 accompanied by mucinous cystic neoplasm (MCN). A pancreatic lesion was incidentally detected in a woman in her 60s. After 6 years of follow-up, the lesion abruptly increased in size. Computed tomography showed a 3.5 cm unilocular cyst in the tail of the pancreas and distal pancreatectomy was performed. On microscopic examination, the cyst was lined by mucinous and non-mucinous epithelial cells with mild cytologic atypia. The surrounding stroma comprised ovarian-type spindle cells with progesterone receptor positivity. The pericystic pancreas exhibited multifocal lymphoid follicles, lymphoplasmacytic infiltrations, obliterative phlebitis, and storiform fibrosis. IgG4-positive plasma cell infiltration (215 cells high-power field) and the IgG4/IgG ratio (57%) were increased. Cases of MCN coexisting with AIP1 are extremely rare; only two such cases have been reported in the English-language literature. This third case featured low-grade MCN with AIP1.
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Citations
Citations to this article as recorded by
- Histological features of autoimmune pancreatitis and IgG4-related sclerosing cholangitis with a correlation with imaging findings
Kenji NOTOHARA
Choonpa Igaku.2023; 50(1): 55. CrossRef - Imaging Features and Risk Factors of Pancreatic Cystic Lesions Complicating
Autoimmune Pancreatitis: A Retrospective Study
Bin-Bin Zhang, Xin-Meng Hou, Yu-Qi Chen, Jian-Wei Huo, Er-Hu Jin
Current Medical Imaging Formerly Current Medical Imaging Reviews.2023;[Epub] CrossRef - Histological features of autoimmune pancreatitis and IgG4-related sclerosing cholangitis with a correlation with imaging findings
Kenji Notohara
Journal of Medical Ultrasonics.2021; 48(4): 581. CrossRef - 自己免疫性膵炎診療ガイドライン2020
Suizo.2020; 35(6): 465. CrossRef - Mucinous cystic neoplasm of the pancreas with type-1 autoimmune pancreatitis-like lesion
Kevin Gowing, David F. Schaeffer, Hui-Min Yang
Human Pathology: Case Reports.2019; 18: 200339. CrossRef
- Histological features of autoimmune pancreatitis and IgG4-related sclerosing cholangitis with a correlation with imaging findings
Case Report
- Fine Needle Aspiration Cytology of Mucinous Cystic Carcinoma of the Pancreas: A Case Report.
- Kyungji Lee, Ahwon Lee, Kyo Young Lee, Chang Suk Kang, Sang In Shim
- Korean J Cytopathol. 2005;16(2):88-92.
- 1,471 View
- 13 Download
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Abstract
PDF
- Mucious cystic neoplasm of pancreas is a cystic neoplasm composed of columnar, mucin-producing epithelium and is supported by ovarian-type stroma. The key to the cytologic evaluation of pancreatic cystic lesions is to recognize the cytologic components as being diagnostic of a mucin-producing cystic neoplasm, as all of these neoplasms need to be resected. We report the use of fine needle aspiration cytology in the diagnosis of an invasive mucinous cystic carcinoma confirmed by partial pancreatectomy. The cytologic specimen showed a abundant mucin background and sheets or papillae of neoplastic cells. There are mucin-containing columnar cells that show a variable degree of cytologic atypia.
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