PMID- 27580547 OWN - NLM STAT- MEDLINE DCOM- 20170228 LR - 20181202 IS - 1349-7235 (Electronic) IS - 0918-2918 (Linking) VI - 55 IP - 17 DP - 2016 TI - Antineutrophil Cytoplasmic Antibody-associated Vasculitis Superimposed on Infection-related Glomerulonephritis Secondary to Pulmonary Mycobacterium avium Complex Infection. PG - 2439-45 LID - 10.2169/internalmedicine.55.6588 [doi] AB - A 73-year-old woman was diagnosed with pulmonary Mycobacterium avium complex (MAC) infection and received no treatment. Disease progression was evident one year later with the development of myeloperoxidase-antineutrophil cytoplasmic antibody (ANCA) titers and systemic symptoms of a fever, polyarthritis, purpura, and rapidly progressive glomerulonephritis. Her symptoms did not improve with antibiotic treatment. A renal biopsy revealed crescentic glomerulonephritis with immunodeposition. According to these findings, she was diagnosed with ANCA-associated vasculitis (AAV) superimposed on infection-related glomerulonephritis (IRGN). Although there was a risk of aggravating an underlying infection, the combination therapy of corticosteroid and antibiotics improved AAV, IRGN, and even the lung radiological findings. To the best of our knowledge, this is the first case of AAV and IRGN secondary to pulmonary MAC infection. FAU - Asano, Shuichi AU - Asano S AD - Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Japan. FAU - Mizuno, Shige AU - Mizuno S FAU - Okachi, Shotaro AU - Okachi S FAU - Aso, Hiromichi AU - Aso H FAU - Wakahara, Keiko AU - Wakahara K FAU - Hashimoto, Naozumi AU - Hashimoto N FAU - Ito, Satoru AU - Ito S FAU - Kozaki, Yohei AU - Kozaki Y FAU - Katsuno, Takayuki AU - Katsuno T FAU - Maruyama, Shoichi AU - Maruyama S FAU - Hasegawa, Yoshinori AU - Hasegawa Y LA - eng PT - Case Reports PT - Journal Article DEP - 20160901 PL - Japan TA - Intern Med JT - Internal medicine (Tokyo, Japan) JID - 9204241 RN - 0 (Adrenal Cortex Hormones) RN - 0 (Anti-Bacterial Agents) SB - IM MH - Adrenal Cortex Hormones/therapeutic use MH - Aged MH - Anti-Bacterial Agents/therapeutic use MH - Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/*etiology MH - Disease Progression MH - Female MH - Glomerulonephritis/*etiology/microbiology MH - Humans MH - Mycobacterium avium-intracellulare Infection/*complications/drug therapy MH - Pneumonia, Bacterial/*complications/drug therapy/microbiology EDAT- 2016/09/02 06:00 MHDA- 2017/03/01 06:00 CRDT- 2016/09/02 06:00 PHST- 2016/09/02 06:00 [entrez] PHST- 2016/09/02 06:00 [pubmed] PHST- 2017/03/01 06:00 [medline] AID - 10.2169/internalmedicine.55.6588 [doi] PST - ppublish SO - Intern Med. 2016;55(17):2439-45. doi: 10.2169/internalmedicine.55.6588. Epub 2016 Sep 1.