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We considered the following diagnoses: lymphoma, connective tissue disease, tuberculosis and sarcoidosis. Subcutaneous nodule histology was compatible with erythema induratum of Bazin, and liver biopsy evidenced granulomatous hepatitis. Although microbiological examinations were negative in tissue samples, a presumptive diagnosis of hepatic tuberculosis was admitted. Having excluded other causes, erythema of Bazin, livedo reticularis and polyarticular involvement (Pon\u00e7et's arthropathy) were accepted as immunological epiphenomena associated with tuberculosis. Empirical antituberculous treatment was started and after 3\u2005weeks the patient improved substantially. This clinical response was a further confirmation of the diagnosis.<\/jats:p>","DOI":"10.1136\/bcr-2015-213585","type":"journal-article","created":{"date-parts":[[2016,3,4]],"date-time":"2016-03-04T11:57:35Z","timestamp":1457092655000},"page":"bcr2015213585","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Erythema induratum of Bazin and Pon\u00e7et's arthropathy as epiphenomena of hepatic tuberculosis"],"prefix":"10.1136","volume":"2016","author":[{"given":"Rita","family":"Ribeiro","sequence":"first","affiliation":[]},{"given":"Catarina","family":"Patr\u00edcio","sequence":"additional","affiliation":[]},{"given":"Filipa Pais da","family":"Silva","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7042-0498","authenticated-orcid":false,"given":"Pedro Eduardo","family":"Silva","sequence":"additional","affiliation":[]}],"member":"239","published-online":{"date-parts":[[2016,3,4]]},"reference":[{"doi-asserted-by":"publisher","key":"2025042702523732000_2016.mar04_1.bcr2015213585.1","DOI":"10.1136\/ard.2009.127100"},{"issue":"(Pt 2)","key":"2025042702523732000_2016.mar04_1.bcr2015213585.2","first-page":"253","article-title":"Necrosis in lymph nodes","volume":"22","author":"Strickler","year":"1987","journal-title":"Pathol Annu"},{"doi-asserted-by":"publisher","key":"2025042702523732000_2016.mar04_1.bcr2015213585.3","DOI":"10.2214\/ajr.172.3.10063847"},{"doi-asserted-by":"publisher","key":"2025042702523732000_2016.mar04_1.bcr2015213585.4","DOI":"10.1016\/S0950-3536(87)80046-X"},{"key":"2025042702523732000_2016.mar04_1.bcr2015213585.5","first-page":"661","article-title":"Mesenteric lymph node cavitations in Whipple's disease","volume":"74","author":"de Wazi\u00e8res","year":"1993","journal-title":"J Radiol"},{"doi-asserted-by":"publisher","key":"2025042702523732000_2016.mar04_1.bcr2015213585.6","DOI":"10.3748\/wjg.v16.i24.2991"},{"key":"2025042702523732000_2016.mar04_1.bcr2015213585.7","doi-asserted-by":"crossref","first-page":"478269","DOI":"10.1155\/2010\/478269","article-title":"Cavitating mesenteric lymph node syndrome in association with celiac disease and enteropathy associated T-cell lymphoma: a case report and review of the literature","volume":"2010","author":"McBride","year":"2010","journal-title":"Case Rep Med"},{"key":"2025042702523732000_2016.mar04_1.bcr2015213585.8","doi-asserted-by":"crossref","first-page":"166","DOI":"10.1177\/102490790100800309","article-title":"Erythema nodosum as the first presenting complaint of asymptomatic pulmonary tuberculosis","volume":"8","author":"Wong","year":"2001","journal-title":"Hong Kong J Emerg Med"},{"doi-asserted-by":"publisher","key":"2025042702523732000_2016.mar04_1.bcr2015213585.9","DOI":"10.1111\/j.1346-8138.2004.tb00509.x"},{"doi-asserted-by":"publisher","key":"2025042702523732000_2016.mar04_1.bcr2015213585.10","DOI":"10.1046\/j.1365-4362.1998.00316.x"},{"key":"2025042702523732000_2016.mar04_1.bcr2015213585.11","first-page":"683","article-title":"The differential diagnosis of erythema nodosum","volume":"63","author":"O'Neill","year":"1991","journal-title":"Del Med J"},{"key":"2025042702523732000_2016.mar04_1.bcr2015213585.12","doi-asserted-by":"crossref","first-page":"20","DOI":"10.5070\/D38F30C7RD","article-title":"Lupus panniculitis (lupus profundus)","volume":"7","author":"Strober","year":"2001","journal-title":"Dermatology Online J"},{"doi-asserted-by":"publisher","key":"2025042702523732000_2016.mar04_1.bcr2015213585.13","DOI":"10.4103\/0019-5154.60364"},{"key":"2025042702523732000_2016.mar04_1.bcr2015213585.14","first-page":"68","article-title":"Lupus panniculitis: clinical perspectives from a case series","volume":"26","author":"Martens","year":"1999","journal-title":"J Rheumatol"},{"doi-asserted-by":"publisher","key":"2025042702523732000_2016.mar04_1.bcr2015213585.15","DOI":"10.1001\/jama.1945.02860220017005"},{"key":"2025042702523732000_2016.mar04_1.bcr2015213585.16","doi-asserted-by":"crossref","first-page":"350","DOI":"10.1097\/00000372-199508000-00008","article-title":"Erythema induratum of Bazin. 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