Acute femoral osteomyelitis due to hypermucoviscous Klebsiella pneumoniae

• DOI: 10.1016/j.idcr.2022.e01404
• Publication Date: 2022-01-13T07:44:40Z
• Authors: Takayuki Kawamura; Daisuke Ono; Ayako Shirai; Kazuyuki Mimura; Shunpei Iida; Kazuo Saita; Hideaki Oka; Hideaki Ohno
• Keywords: Klebsiella pneumoniae; 0303 health sciences; 03 medical and health sciences; Hypermucoviscous strains; Bone tumors; Osteomyelitis; Case Report; Infectious and parasitic diseases; RC109-216; 3. Good health

Hypervirulent hypermucoviscous Klebsiella pneumoniae strains have emerged as clinically important pathogens causing invasive infections. K. pneumoniae osteomyelitis is uncommon in adult patients, and may mimic bone tumors on presentation. We report a patient with left rectus femoris muscle abscess and acute osteomyelitis of the left femur due to hypermucoviscous K. pneumoniae with negative blood culture, who was initially thought to have left thigh tumor. The patient's infection resolved with surgical drainage and debridement and intravenous and antibiotic therapy.