Neisseria cinerea is bacteria known as non-pathogenic strain. However, in rare cases, it can cause opportunistic infections. Those diseases caused by N. cinerea include neonatal ophthalmia, proctitis, pneumonia, peritonitis in patients with continuous ambulatory peritoneal dialysis, endocarditis and meningitis. In this report, we describe a patient with septic arthritis and skin abscess of finger joints that was caused by N. cinerea. A 27-year-old man visited the hospital due to swelling, redness and pain of proximal interphalangeal joint of the left second finger. After blood culture test, ceftriaxone was administered on admission and debridement was performed the affected joints. N. cinerea was identified in the blood culture. The patient was improved with ceftriaxone.

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• A 12-day-old Infant Presents with Eye Discharge
  Leora Lieberman, Nitya Rajeshuni, Evan Shirey, Yasaman Fatemi, Anna Costello
  NeoReviews.2023; 24(8): e511.     CrossRef
• Infective Endocarditis Caused byNeisseria cinereain a 7-Year-Old Girl Who Had Undergone Surgical Pulmonary Valve Replacement
  Moon Sun Kim, Seong Ho Kim, So Ick Jang, Sang Yoon Lee
  The Ewha Medical Journal.2017; 40(4): 171.     CrossRef

Eosinophilic gastroenteritis is a rare, benign condition, characterized by various gastrointestinal symptoms associated with eosinophilic infiltration of the wall of the any part of the digestive tract, most commonly the stomach and small intestine. Eosinophilic gastroenteritis is generally classified according to the involved layer of the gastrointestinal tract. Serosal type is the rarest form of eosinophilic gastroenteritis that is characteristically accompanied with eosinophilic ascites and responds well to steroid treatment. We have experienced a typical case of serosal type eosinophilic gastroenteritis in a women who complained of abdominal pain. She had peripheral eosinophilia, gastric and small bowel wall thickening with eosionophilic ascites. Her symptom relieved rapidly after starting corticosteroid treatment and she had long been in clinical remission after discontinuation of corticosteroid administration.

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• Eosinophilic Ascites: A Rare Diagnosis With an Even Rarer Etiology
  Devipriya Surapaneni, Bilal Azam, Sharath Chandra Dasi
  Cureus.2024;[Epub]     CrossRef

Neisseria cinerea is an oropharyngeal normal flora known as a non-pathogenic gram-negative diplococcus. Encephalo-meningitis related to N. cinerea is very rare. A 15-year-old healthy male visited emergency room for altered mentality with fever, headache, and vomiting. Physical examination showed abdominal tenderness and neck stiffness but there was no skin rash. Cerebrospinal fluid (CSF) examination revealed opening pressure of 210 mmH₂O, red blood cell 200/mm³, white blood cell 8,320/mm³, neutrophil 84%, glucose 34 mg/dL, suggesting acute bacterial meningitis. Empirical antibiotics were administered and N. cinerea was identified in CSF culture. The patient showed complete recovery 10 days after administration of ceftriaxone. We report this case as the first N. cinerea meningitis in Korea.

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Citations to this article as recorded by  

• Infective Endocarditis Caused byNeisseria cinereain a 7-Year-Old Girl Who Had Undergone Surgical Pulmonary Valve Replacement
  Moon Sun Kim, Seong Ho Kim, So Ick Jang, Sang Yoon Lee
  The Ewha Medical Journal.2017; 40(4): 171.     CrossRef
• Acute Septic Arthritis and Skin Abscess Caused byNeisseria cinerea
  Hyo Moon Son, Ko Eun Lee, Soo Kyung Lim, Youn I Choi, Eun Kyo Jung, Miae Lee, Jae Kwang Kim, Hee Jung Choi
  The Ewha Medical Journal.2014; 37(Suppl): S24.     CrossRef