CLINICAL CASE: MICROSCOPIC POLYANGIITIS AS ONE OF THE MAIN VARIANTS OF PULMONARY-RENAL SYNDROME

Клинические проявления микроскопического полиангиита многообразны, что затрудняет своевременную диагностику и соответственно адекватное лечение. Цель: привлечь внимание терапевтов, пульмонологов, нефрологов к своевременному выявлению легочно-почечного синдрома и установлению его нозологической основы, в частности микроскопического полиангиита на примере клинического случая. Материалы и методы: проведены обследование пациента с микроскопическим полиангиитом и дифференциальная диагностика в рамках легочно-почечного синдрома. Результаты: на основании анамнеза заболевания, результатов клинического и дополнительных методов исследования пациента, установлен диагноз микроскопического полиангиита. Выводы: для ранней диагностики микроскопического полиангиита необходима настороженность при возникновении легочно-почечного синдрома в виде сочетания гломерулонефрита и геморрагического альвеолита на фоне сосудистой пурпуры. Clinical manifestations of microscopic polyangiitis are diverse, which complicates timely diagnosis and, accordingly, adequate treatment. Goal: to draw the attention of therapists, pulmonologists, nephrologists to the timely detection of pulmonary-renal syndrome and the establishment of its nosological basis, in particular microscopic polyangiitis by the example of a clinical case. Materials and methods: an examination of a patient with microscopic polyangiitis and differential diagnosis within the framework of pulmonary-renal syndrome were carried out. Results: based on the anamnesis of the disease, the results of clinical and additional research methods of the patient, the diagnosis of microscopic polyangiitis was established. Conclusions: for early diagnosis of microscopic polyangiitis, alertness is necessary in the event of pulmonary-renal syndrome in the form of a combination of glomerulonephritis and hemorrhagic alveolitis against the background of vascular purpura.

Case Report: Anti-neutrophil Cytoplasmic Antibody-Associated Vasculitis With Acute Renal Failure and Pulmonary Hemorrhage May Occur After COVID-19 Vaccination

The rare and severe adverse effects associated with coronavirus disease of 2019 (COVID-19) vaccination have been under-appreciated, resulting in many instances of inappropriate management. We describe the case of an elderly woman who developed anti-neutrophil cytoplasmic antibody-associated vasculitis with pulmonary renal syndrome approximately 3 weeks after the first dose of COVID-19 mRNA vaccination (Moderna). Her nasopharyngeal polymerase chain reaction test for the COVID-19 RNA virus was negative. Gross hematuria, heavy proteinuria, acute renal failure (serum creatinine up to 6.5 mg/dL), and hemoptysis coupled with a marked increase in serum anti-myeloperoxidase-O antibody were observed. Renal biopsy showed severe vasculitis with pauci-immune crescent glomerulonephritis. The pulmonary hemorrhage was resolved and renal function improved following combined plasma exchange and the administration of systemic steroids and anti-CD20 therapy. The early examination of urinalysis and renal function may be crucial for identifying glomerulonephritis and acute renal failure in susceptible patients after COVID-19 vaccination.

Gastrointestinal Hemorrhage in Patient with Granulomatosis with Polyangitis

Granulomatosis with polyangitis (GPA) is characterized by a necrotizing granulomatous vasculitis of small arteries and veins. It most commonly affects the upper and lower respiratory tract and kidneys. However, other organs including the gastrointestinal tract can be affected. Gastrointestinal manifestations of GPA are rare and can include ischemia, bowel infarction, and perforation. Hemorrhage is an extremely rare presentation of GPA. We present a case of a woman with GPA and pulmonary renal syndrome on treatment who presents with severe gastrointestinal hemorrhage.