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International Journal of Rheumatic Diseases ; 26(Supplement 1):283.0, 2023.
Article in English | EMBASE | ID: covidwho-2235447


Background: A 54-year- old male presented to our centre with a chronic non-productive cough and breathlessness. Recent history of COVID treated and resolved few months back. He had a history of brain surgery performed five years back but details not known. Physical examination revealed no oedema and bilateral coarse creps with bronchiolar breathing. Laboratory findings indicated neutrophilic leucocytosis, elevated inflammatory markers, with elevated troponin I and D dimers. Urine analysis suggested microscopic haematuria with sediments. While 24 hour quantification revealed sub nephrotic proteinuria. As auto immune workup and vasculitis profile was negative and patient has not improved in spite of standard of therapy hence we went ahead with CT-Chest indicating ground-glass opacities in bilateral lung parenchyma and prominent interlobular/intralobular septal thickening. Then Bronchoscopy done which revealed the blood-stained secretions in the main stem bronchi and diffuse alveolar haemorrhage in bilateral bronchial segments indicating an inflammatory study, while tuberculosis diagnostic panel and infective bio fire panel in BAL was negative. Meanwhile, his repeat BAL culture suggested Carbapenem resistant Acinetobacter baumannii complex infection. As the patient did not respond to the standard of care for vasculitis. Probability considered was a small vessel vasculitis (namely Granulomatous polyangiitis) was considered due to lung manifestation involving upper respiratory tract with epistaxis, neutrophilic leucocytosis, elevated acute reactive protein, and renal manifestation including microscopic haematuria and proteinuria. However he responded poorly to conventional standard of treatment including pulse steroids and IVIG. Hence after MDT discussion we proceeded with lung biopsy which showed linear cores of lung tissue infiltrated by a malignant neoplasm and acinar pattern suggesting Invasive mucinous adenocarcinoma. Hence we went ahead with the biopsy diagnosis for the treatment plan. As he was to be started on chemotherapy, but he suddenly collapsed and went into hypotension, bradycardia, and cardiac arrest. In spite of high supports and post 4 cycles of CPR, was unable to revive and sadly succumbed to his illness. Discussion(s): In this rare case, the original diagnosis pointed to the pulmonary-renal syndrome, an autoimmune disease characterized by diffuse pulmonary haemorrhage and glomerulonephritis. However, negative autoimmune antibodies and vasculitis profile along with lung biopsy results indicated an unusual case of malignant lung adenocarcinoma presented with pulmonary renal syndrome. Conclusion(s): In cases suggesting pulmonary-renal syndromes, if autoimmune work up is negative and response is suboptimal relook the diagnosis.