Society of Diabetic Nephropathy Prevention Journal of Nephropathology 2251-8363 10 2 2021 04 01 From the lungs to the kidneys; a case of renal AA amyloidosis in a patient with pulmonary TB e13 e13 10.34172/jnp.2021.13 EN Yesid Fabián Mantilla-Flórez https://orcid.org/0000-0002-6276-7544 Eduardo Tuta-Quintero https://orcid.org/0000-0002-7243-2238 Carlos Mauricio Calderón-Vargas https://orcid.org/0000-0003-1408-3954 Paula Violeta Rodríguez-Segura Nicolas Díaz-Pinilla Journal Article 10.34172/jnp.2021.13 2020 04 16 2020 06 03 AA amyloidosis is a complication related to several chronic inflammatory conditions like cancer, autoimmune diseases and infections, among others. The disease implicates amyloid fibrils deposit in tissues leading to organ failure. Renal involvement has been closely associated with amyloidosis and sometimes with tuberculosis too. Therefore, it is important to achieve a renal biopsy that allows elucidating the etiology of the clinical picture in order to provide the correct treatment to the patients. In this paper, we present a case of renal amyloidosis secondary to pulmonary tuberculosis which debuted as nephrotic syndrome.