%0 Journal Article %T Spontaneous hematoma of the thigh associated with antiproteinase %A Eddie H. Hu %A Yi-Kong Keung %J Journal of Oncology Pharmacy Practice %@ 1477-092X %D 2019 %R 10.1177/1078155218786352 %X We report an unusual case of spontaneous intramuscular hematoma associated with antiproteinase 3 antibody in a patient with metastatic squamous cell carcinoma receiving nivolumab and the medical literature is reviewed %K PD-1/PD-L1 inhibitor %K nivolumab %K spontaneous hematoma %K squamous cell carcinoma of lung %U https://journals.sagepub.com/doi/full/10.1177/1078155218786352