IgG4-related inflammatory pseudotumour of the gallbladder in acute cholecystitis

Immunoglobulin G4 related pseudotumour (IgG4-PT) of the gallbladder is a very rare condition formed by the infiltration of IgG4-positive lymphocytes and plasma cells, resulting in a mass effect that can mimic malignancy. We present a case of a patient who underwent an unremarkable laparoscopic chole...

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Main Authors: Walter Santucci, Philip Lee, Rosanne Devadas, Henry To
Format: Article
Language:English
Published: Elsevier 2023-09-01
Series:Human Pathology Reports
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2772736X23000221
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author Walter Santucci
Philip Lee
Rosanne Devadas
Henry To
author_facet Walter Santucci
Philip Lee
Rosanne Devadas
Henry To
author_sort Walter Santucci
collection DOAJ
description Immunoglobulin G4 related pseudotumour (IgG4-PT) of the gallbladder is a very rare condition formed by the infiltration of IgG4-positive lymphocytes and plasma cells, resulting in a mass effect that can mimic malignancy. We present a case of a patient who underwent an unremarkable laparoscopic cholecystectomy for symptoms of early cholecystitis that was incidentally found to have an inflammatory tumour adjacent to the cystic duct. Identification remains difficult and histopathology remains a cornerstone in correct diagnosis. Histopathological confirmation is based on meeting two of three histological criteria in the correct clinical context. IgG4-PT is a rare cause of cholecystitis and requires ongoing surveillance for IgG4 cholangiopathy.
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spelling doaj.art-770caa958d974faaa4fc2862f27ff1092023-09-07T04:45:13ZengElsevierHuman Pathology Reports2772-736X2023-09-0133300712IgG4-related inflammatory pseudotumour of the gallbladder in acute cholecystitisWalter Santucci0Philip Lee1Rosanne Devadas2Henry To3Department of Surgery, Werribee Mercy Hospital, Werribee, VIC, Australia; Corresponding author at: Department of Surgery, Level 2 Werribee Mercy Hospital, 300-310 Princes Highway, Werribee, VIC 3030, Australia.Melbourne Clinical School, School of Medicine, The University of Notre Dame Australia, Werribee, VIC, AustraliaDorevitch Pathology, Heidelberg, VIC, AustraliaDepartment of Surgery, Werribee Mercy Hospital, Werribee, VIC, AustraliaImmunoglobulin G4 related pseudotumour (IgG4-PT) of the gallbladder is a very rare condition formed by the infiltration of IgG4-positive lymphocytes and plasma cells, resulting in a mass effect that can mimic malignancy. We present a case of a patient who underwent an unremarkable laparoscopic cholecystectomy for symptoms of early cholecystitis that was incidentally found to have an inflammatory tumour adjacent to the cystic duct. Identification remains difficult and histopathology remains a cornerstone in correct diagnosis. Histopathological confirmation is based on meeting two of three histological criteria in the correct clinical context. IgG4-PT is a rare cause of cholecystitis and requires ongoing surveillance for IgG4 cholangiopathy.http://www.sciencedirect.com/science/article/pii/S2772736X23000221IgG4 pseudotumourIgG4 cholecystitisCystic duct tumoursGallbladder tumours
spellingShingle Walter Santucci
Philip Lee
Rosanne Devadas
Henry To
IgG4-related inflammatory pseudotumour of the gallbladder in acute cholecystitis
Human Pathology Reports
IgG4 pseudotumour
IgG4 cholecystitis
Cystic duct tumours
Gallbladder tumours
title IgG4-related inflammatory pseudotumour of the gallbladder in acute cholecystitis
title_full IgG4-related inflammatory pseudotumour of the gallbladder in acute cholecystitis
title_fullStr IgG4-related inflammatory pseudotumour of the gallbladder in acute cholecystitis
title_full_unstemmed IgG4-related inflammatory pseudotumour of the gallbladder in acute cholecystitis
title_short IgG4-related inflammatory pseudotumour of the gallbladder in acute cholecystitis
title_sort igg4 related inflammatory pseudotumour of the gallbladder in acute cholecystitis
topic IgG4 pseudotumour
IgG4 cholecystitis
Cystic duct tumours
Gallbladder tumours
url http://www.sciencedirect.com/science/article/pii/S2772736X23000221
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AT rosannedevadas igg4relatedinflammatorypseudotumourofthegallbladderinacutecholecystitis
AT henryto igg4relatedinflammatorypseudotumourofthegallbladderinacutecholecystitis