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Early clinical presentations and progression of calciphylaxis

Untreated calciphylaxis is a fatal disease of intra‐ and extravascular calcification, most commonly presenting in end‐stage renal disease (ESRD) patients. While early identification is critical for timely treatment, early‐stage clinical and histopathological descriptions have not, to our knowledge, been elucidated. As early clinical recognition is essential to prompt definitive histopathological diagnosis, this study describes a range of clinical and histopathological manifestations of early‐stage calciphylaxis.