Many other microorganisms have been implicated in the formation of intramedullary abscesses, such as Candida albicans , Nocardia asteroides , Listeria monocytogenes [11, 12], Cryptococcus neoformans , Brucella , Scedosporium apiospermum , Histoplasma capsulatum , group F Streptococcus , Bacteroides disiens , Streptococcus melleri , and Aspergillus fumigatus . Many of these patients have an underlying immunocompromised predisposition, such as human immunodeficiency virus (HIV) infection or agammaglobulinemia. While most cultures of intramedullary abscesses were sterile using typical laboratory testing, it has been estimated that 17 % of intramedullary abscesses are caused by the Streptococcus genus of organisms , the causative organism in our patient.