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Z Mackiewicz is a prominent researcher in vascular pathology and autoimmune connective tissue diseases, with a particular focus on systemic sclerosis (scleroderma) and inflammatory myopathies. Her landmark 2003 study, cited 67 times, demonstrated that while vascular endothelial growth factor (VEGF) and its receptors are upregulated in systemic sclerosis skin, this expression is imbalanced and fails to promote effective angiogenesis—a finding that fundamentally reshaped understanding of vascular damage in the disease. A companion paper (42 citations) further established that SSc skin exhibits significant vascular damage coupled with a lack of compensatory angiogenesis, distinguishing it from conditions like lupus and Raynaud’s phenomenon. Mackiewicz also made notable contributions to inflammatory myopathy research, showing that caspase-1, interleukin-1 beta, and tumor necrosis factor-alpha have dual roles in muscle degeneration and regeneration in dermatomyositis and polymyositis (25 citations). Her work on Wegener’s granulomatosis (18 citations) revealed that macrophages overloaded with tissue debris contribute to granuloma formation. Through these studies, Mackiewicz has provided critical insights into the mechanisms of vascular injury and failed repair in autoimmune disease, establishing her as a key figure in understanding the pathogenesis of systemic sclerosis and related disorders.