Sclerosing Mesenteritis Mimicking IgG4-related Disease

• Published in: Internal Medicine Vol. 59; no. 4; pp. 513 - 518
• Main Authors: Fukuda, Masahide, Miyake, Toru, Matsubara, Akiko, Ikai, Nobuyasu, Tanaka, Eri, Namura, Tomo, Wada, Yasuhiro, Noujima, Mai, Moritani, Suzuko, Murakami, Kazunari, Andoh, Akira, Tani, Masaji, Kushima, Ryoji
• Format: Journal Article
• Language: English
• Published: Japan The Japanese Society of Internal Medicine 15.02.2020; Japan Science and Technology Agency
• Subjects: Adrenal glands; Case Report; Computed tomography; IgG4-related disease; Immunoglobulin G; Internal medicine; Mesentery; Mimicry; panniculitis; sclerosing mesenteritis; Surgery; sclerosing mesenteritis; panniculitis; IgG4-related disease
• ISSN: 0918-2918; 1349-7235
• DOI: 10.2169/internalmedicine.3221-19

A 72-year-old man was followed as an outpatient at our hospital for 6 years after surgery for small cell carcinoma of left adrenal gland origin. Follow-up abdominal computed tomography showed a 6-cm mass in the left lower mesentery. The patient underwent open laparotomy. The histological diagnosis was sclerosing mesenteritis. The previous specimens of the left adrenal mass were then re-examined with a microscope, and panniculitis was found around the small cell carcinoma. Both lesions were histologically similar to IgG4-related disease (RD), but they did not completely meet the diagnostic criteria of IgG4-RD clinically or histologically.