Prosthetic vascular graft infection (PVGI) following vascular reconstructive surgery is an uncommon but serious complication and is associated with high morbidity as well as mortality rate. Staphylococcal species are the most common organisms causing PVGI. Mycobacterium abscessus is a very rare cause of PVGI and poses a significant diagnostic and management dilemma. To the best of our knowledge, we report the third documented case of M. abscessus vascular graft infection that was diagnosed with 18F-fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) scan and treated successfully.

Drug-induced leukocytoclastic vasculitis is an inflammation of blood vessels triggered by various drugs. It presents with a localized skin rash but may involve the internal organ systems, including the gastrointestinal tract, kidneys, lungs, central nervous system, and joints. The clinical recognition of drug-induced vasculitis is very important because continued use of the culprit drug can be organ or life threatening. The prognosis is excellent if the disease is limited to the skin and diagnosed promptly. The use of tigecycline has recently increased due to resistance patterns of bacteria, and it is important to recognize this potential adverse effect of this drug and to diagnose and treat the patient early to achieve a favorable outcome. To best of our knowledge, we report the first case of tigecycline-induced leukocytoclastic vasculitis.

Henoch-Schönlein purpura is generally a disease of children and uncommon in adults, especially after the age of 40. It is characterized by leukocytoclastic vasculitis skin rash, arthralgia, and gastrointestinal symptoms. In adults, glomerulonephritis may occur and the long-term prognosis is poor. We present the case of a 65-year-old man with complaints of abdomen pain and skin rash who subsequently developed renal failure. He was diagnosed with adult onset Henoch-Schönlein purpura and survived after treatment with glucocorticoids and hemodialysis.

Drug-induced immune thrombocytopenia is a challenging clinical problem that is often overlooked. Vancomycin is a rare cause of immune-mediated thrombocytopenia that can cause severe life-threatening bleeding in an acutely ill patient. The diagnosis requires a temporal relationship with the drug, exclusion of other common causes, and testing for vancomycin-induced platelet antibodies. Here we present a rare case of very severe but asymptomatic vancomycin-induced immune thrombocytopenia that resolved after discontinuation of vancomycin.