Granulomatosis with Polyangiitis Presenting as Pancreatic Pseudotumor and Peripancreatic Lymphadenitis: Diagnostic Challenges and Review of 55 Cases

Camille Beniada; Yann Coattrenec; Sahar Mack; Alexis Ricoeur; Volkan Adsay; Giacomo Puppa; Jörg D. Seebach

doi:10.12659/AJCR.945741

31 May 2025 : Case report Switzerland

Granulomatosis with Polyangiitis Presenting as Pancreatic Pseudotumor and Peripancreatic Lymphadenitis: Diagnostic Challenges and Review of 55 Cases

Mistake in diagnosis, Unusual or unexpected effect of treatment, Diagnostic / therapeutic accidents, Rare disease, Educational Purpose (only if useful for a systematic review or synthesis)

Camille Beniada^{ABCEF 1}, Yann Coattrenec^{AE 1}, Sahar Mack

^{ADEF 2}, Alexis Ricoeur

^{CD 3}, Volkan Adsay^{CD 4,5}, Giacomo Puppa^{DE 6}, Jörg D. Seebach

^{ACDEF 1*}

DOI: 10.12659/AJCR.945741

Am J Case Rep 2025; 26:e945741

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Figure 1 Magnetic resonance T2-weighted image demonstrating a 5.8-cm isointense mass lesion in the tail of the pancreas mimicking a pancreatic neoplasm (arrow). Additional images demonstrated a decreased signal intensity on T1-weighted images and a restriction of diffusion, but no delayed enhancement on gadolinium-enhanced T1-weighted images (not shown).

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Granulomatosis with Polyangiitis Presenting as Pancreatic Pseudotumor and Peripancreatic Lymphadenitis: Diagnostic Challenges and Review of 55 Cases

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