{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T23:54:48Z","timestamp":1791158088642,"version":"4.1.0"},"reference-count":20,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2022,1,1]],"date-time":"2022-01-01T00:00:00Z","timestamp":1640995200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Investigative Medicine High Impact Case Reports"],"published-print":{"date-parts":[[2022,1]]},"abstract":"<jats:p>Inflammatory pseudotumors of the liver are rare, non-neoplastic liver tumors. Due to the nonspecific clinical presentation, imaging features, and histopathological findings, they can mimic malignant tumors requiring invasive diagnostics. We present a case of a 61-year-old female patient with a history of type 2 diabetes mellitus, hypothyroidism, hyperlipidemia, and polymyalgia rheumatica who had initially presented with abdominal pain for 3 weeks. Further workup showed normal liver chemistries and tumor markers: AFP and CA 19-9. Magnetic resonance imaging (MRI) of the abdomen showed a segment 6 lesion measuring 4.1 \u00d7 4.0 \u00d7 3.7 cm. A liver biopsy then confirmed the diagnosis of an inflammatory pseudotumor of the liver with negative IgG4. On follow-up imaging, a rapid growth of this liver lesion was noted. Laparoscopy was done but did not show any distinct liver lesion. Follow-up imaging confirmed a decrease in the size of the mass. Interestingly, the patient had been on a higher dose of steroids for her polymyalgia rheumatic leading up to the follow-up imaging. This is the first case of an inflammatory pseudotumor of the liver in a patient with polymyalgia rheumatica. With this case, we would like to increase the awareness for inflammatory pseudotumors of the liver as a differential diagnosis of liver lesions in patients with underlying autoimmune disorders.<\/jats:p>","DOI":"10.1177\/23247096211070387","type":"journal-article","created":{"date-parts":[[2022,1,18]],"date-time":"2022-01-18T01:19:51Z","timestamp":1642468791000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Enlarging Liver Mass: Inflammatory Pseudotumor in a Patient With Polymyalgia Rheumatica"],"prefix":"10.1177","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2808-4854","authenticated-orcid":false,"given":"Gowthami","family":"Kanagalingam","sequence":"first","affiliation":[{"name":"Department of Internal Medicine, SUNY Upstate Medical University, Syracuse, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Khadija 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