{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T16:07:11Z","timestamp":1776096431338,"version":"3.50.1"},"reference-count":38,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"12","license":[{"start":{"date-parts":[[2026,3,23]],"date-time":"2026-03-23T00:00:00Z","timestamp":1774224000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Neurosurg Case Lessons"],"published-print":{"date-parts":[[2026,3,23]]},"abstract":"\n BACKGROUND<\/jats:title>\n \n Brain abscesses typically arise from streptococcal, staphylococcal, or gram-negative pathogens, but low-virulence commensals may occasionally cause severe intracranial infection when anatomical barriers are disrupted.\n Gemella morbillorum<\/jats:italic>\n and\n Kocuria rosea<\/jats:italic>\n are rare opportunistic organisms that are seldom implicated in CNS disease and are usually associated with immunosuppression, chronic otolaryngological pathology, or postoperative states. Their simultaneous isolation from a single intracranial abscess has not been previously reported.\n <\/jats:p>\n <\/jats:sec>\n \n OBSERVATIONS<\/jats:title>\n \n A previously healthy 23-year-old man presented with progressive somnolence and persistent headache following recent sinusitis. Neuroimaging revealed a multilobulated left frontal abscess with extensive vasogenic edema. Initial surgical aspiration yielded purulent material, and culture grew\n G. morbillorum<\/jats:italic>\n and\n K. rosea<\/jats:italic>\n . Despite 1 month of broad-spectrum intravenous antibiotics, follow-up MRI demonstrated recurrence, necessitating reoperation with complete excision of the abscess capsule. The patient recovered fully after 6 weeks of antimicrobial therapy.\n <\/jats:p>\n <\/jats:sec>\n \n LESSONS<\/jats:title>\n This case highlights that rare commensal organisms can cause aggressive intracranial infection even in immunocompetent individuals. Accurate microbiological diagnosis is essential when evaluating sinus-derived abscesses, as atypical pathogens may influence treatment decisions and risk of recurrence. Multiloculated abscesses may require complete excision when aspiration and antibiotic therapy are insufficient for durable infection control.<\/jats:p>\n \n https:\/\/thejns.org\/doi\/10.3171\/CASE25950<\/jats:ext-link>\n <\/jats:p>\n <\/jats:sec>","DOI":"10.3171\/case25950","type":"journal-article","created":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T10:04:20Z","timestamp":1775642660000},"source":"Crossref","is-referenced-by-count":0,"title":["Multilobulated frontal brain abscess caused by Gemella morbillorum and Kocuria rosea in an immunocompetent young adult: illustrative case"],"prefix":"10.3171","volume":"11","author":[{"given":"\u0130lhan","family":"Ayd\u0131n","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Istanbul Bak\u0131rk\u00f6y Prof. Dr. Mazhar Osman Training and Research Hospital for Mental Health and Neurological Disorders, Istanbul"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fikret","family":"\u00d6zt\u00fcrk","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Istanbul Bak\u0131rk\u00f6y Prof. Dr. Mazhar Osman Training and Research Hospital for Mental Health and Neurological Disorders, Istanbul"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fatih","family":"Ek\u015fi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Istanbul Bak\u0131rk\u00f6y Prof. Dr. Mazhar Osman Training and Research Hospital for Mental Health and Neurological Disorders, Istanbul"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5970-7815","authenticated-orcid":true,"given":"Berkay","family":"Kef","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Biruni University, Istanbul, T\u00fcrkiye"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Melih","family":"\u00dc\u00e7er","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Biruni University, Istanbul, T\u00fcrkiye"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Orhun Mete","family":"\u00c7evik","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Istanbul Bak\u0131rk\u00f6y Prof. Dr. Mazhar Osman Training and Research Hospital for Mental Health and Neurological Disorders, Istanbul"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"issue":"1","key":"bib1","series-title":"Clin Microbiol Infect","first-page":"95","article-title":"Incidence and mortality of brain abscess in Denmark: a nationwide population-based study","volume":"26","author":"Bodilsen","year":"2020","unstructured":"Bodilsen JDalager-Pedersen Mvan de Beek DBrouwer MCNielsen H.Incidence and mortality of brain abscess in Denmark: a nationwide population-based study. 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