Clinical Findings of Listeria monocytogenes Infections with a Special Focus on Bone Localizations.

Listeria monocytogenes is a Gram-positive pathogenic bacterium which can be found in soil or water. Infection with the microorganism can occur after ingestion of contaminated food products. Small and large outbreaks of listeriosis have been described in the past. L. monocytogenes can cause a number of different clinical syndromes, most frequently sepsis, meningitis, and rhombencephalitis, particularly in immunocompromised hosts. L. monocytogenes systemic infections can develop following tissue penetration across the gastrointestinal tract or to hematogenous spread to sterile sites, possibly evolving towards bacteremia. L. monocytogenes only rarely causes bone or joint infections, usually in the context of prosthetic material that can provide a site for bacterial seeding. We describe here the clinical findings of invasive listeriosis, mainly focusing on the diagnosis, clinical management, and treatment of bone and vertebral infections occurring in the context of invasive listeriosis.

Eponyms of Cranial Neurosurgical Instruments: An International Collaboration to Optimize the Field of Neurosurgery.

The basic set of a cranial instrument tray is filled with eponyms of surgical instruments named after surgeons and physicians from all corners of the medical world. These include pioneers like Castroviejo, Doyen, Frazier, Gigli, Mayfield, Raney, Weitlaner, and Yasargil. These innovators have always strived to enhance and simplify procedures, ultimately shaping the way we perform surgery today. It was a process, which took several generations of surgeons and trials of instruments before its current form could be established. In this paper, the authors provide background information through a historical perspective on the pioneering surgeons and physicians, after whom the instruments were named. Data were collected by searching PubMed, Google Scholar/Books, Google, and the HathiTrust Digital Library. Additional information was obtained via personal contact with American and European medical institutions, libraries, museums, as well as with the surgeons' family members and their perspective foundations. Remembering the life stories of the inventors behind commonly used eponyms in the operating theater reminds us of the long history of even the most rudimentary neurosurgical tool. This unrelenting strive for perfection reminds us, as surgeons, of our duty to continuously assess and improve our surgical tools and processes for the benefit of our patients.