{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T12:13:25Z","timestamp":1777637605147,"version":"3.51.4"},"reference-count":19,"publisher":"International College of Surgeons","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2013]]},"abstract":"Abstract<\/jats:title>\n Inflammatory pseudotumor (IPT) of the liver is rare, and differential diagnosis from malignant tumors is difficult. We herein report a case of IPT of the liver with marked elevation of carbohydrate antigen 19-9 (CA19-9). A 72-year-old woman, who underwent low anterior resection for rectal cancer, had low-grade fever and epigastric pain. The patient has well-controlled idiopathic thrombocytopenic purpura (ITP) with steroid maintenance treatment. Abnormal laboratory findings included serum carcinoembryonic antigen of 15.9 ng\/mL and CA19-9 up to 14,632 U\/mL. Computed tomography revealed a low-density lesion, and magnetic resonance imaging demonstrated a high intensity lesion on T1, T2-weighted, and diffusion-weighted images (55 \u00d7 22 mm in the Couinaud's segment 4 of the liver). However, 1 month after the appearance of the symptom, serum level of CA19-9 suddenly decreased to 37 U\/mL. The tumor decreased spontaneously to 20 \u00d7 10 mm. Seven months later, the tumor had reduced to 18 \u00d7 11 mm. With a diagnosis of IPT, the patient remains well without regrowth of the tumor at 1 year follow-up after CA19-9 decrease to normal limits.<\/jats:p>","DOI":"10.9738\/intsurg-d-13-00091.1","type":"journal-article","created":{"date-parts":[[2013,11,14]],"date-time":"2013-11-14T15:04:38Z","timestamp":1384441478000},"page":"324-329","source":"Crossref","is-referenced-by-count":13,"title":["Hepatic Inflammatory Pseudotumor With Elevated Serum CA19-9 Level Mimicking Liver Metastasis From Rectal Cancer: Report of a Case"],"prefix":"10.9738","volume":"98","author":[{"given":"Yoshihiro","family":"Shirai","sequence":"first","affiliation":[{"name":"Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroaki","family":"Shiba","sequence":"additional","affiliation":[{"name":"Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuki","family":"Fujiwara","sequence":"additional","affiliation":[{"name":"Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ken","family":"Eto","sequence":"additional","affiliation":[{"name":"Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takeyuki","family":"Misawa","sequence":"additional","affiliation":[{"name":"Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katsuhiko","family":"Yanaga","sequence":"additional","affiliation":[{"name":"Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"4721","reference":[{"issue":"7","key":"i0020-8868-98-4-324-b01","series-title":"Cancer","first-page":"1583","article-title":"Inflammatory pseudotumor of the liver: clinicopathologic study and review of the literature","volume":"65","author":"Horiuchi\n R,","year":"1990","unstructured":"Horiuchi\n R, \n \n Uchida\n T, \n \n Kojima\n T, \n \n Shikata\n T. \n \n Inflammatory pseudotumor of the liver: clinicopathologic study and review of the literature. 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