Mucormycosis is a fatal, life-threatening fungal infection occurring in humans that is associated with considerable morbidity and mortality. It is caused by a group of ubiquitous saprophytic molds, which typically affect patients with weak immune defences such as diabetes mellitus, diabetic ketoacidosis, malignant hematological diseases, post-hematopoietic stem cell or solid organ transplants, as well as those with neutropenia. Mucormycosis is mostly related to the current COVID-19 epidemic and the overuse of steroids but can also be caused by haemato-oncological conditions and other health conditions, such as unbalanced diabetes or caustic injuries. It mostly impacts the nose and sinuses, affecting the eyes and other parts of the body. Immediate treatment of mucormycosis is required, consisting of reversal of underlying risk factors, prompt antifungal therapy (preferably as lipid formulations of amphotericin B or isavuconazole), and early surgical debridement. However, the stringent neutropenic and metabolic status of these patients prevents early diagnosis and withholds aggressive antifungal and surgical treatments. The ability of mucormycosis to invade blood vessels and cause angioinvasion, thrombosis, tissue infarction, and the formation of fungal emboli, increases mortality among patients. New surveillance strategies, novel preventive strategies, new applicative detection techniques, novel antifungal agents, or screening for effective agent repurposing are immediately needed to pave the way to enhance the survival of these high-risk patient populations from this deadly infection and reduce the global burden. The present review aimed to provide an exhaustive overview of mucormycosis, including basic information, etiology, epidemiology and incidence, pathogenesis, risk factors, clinical manifestations, diagnosis modalities, and treatment.
Read full abstract