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A Case of Severe Pneumonia with Extensive Lung Abscesses Due to a Klebsiella Isolate Presumptively Identified as Klebsiella Pneumoniae Subsp. Rhinoscleromatis

Year: 2026

Type: article

Abstract: A 67-year-old woman was admitted with the chief complaints of sputum, fever, dyspnea, and malaise. Chest CT revealed a large mass shadow occupying the right middle and lower lobes with multiple nodular shadows in the left lung, and complete atelectasis of the right lung developed the following day. Gram-negative rods in the blood, sputum, and lung tissue were presumptively identified as the rare subspecies Klebsiella pneumoniae subsp. Rhinoscleromatis. The isolate exhibited a hypermucoviscous phenotype based on a positive string test, and PCR assays targeting rmpA and magA were positive. She required intubation and ventilation support. After endotoxin adsorption and antimicrobial treatment, the patient recovered from a fulminant clinical course through appropriate systemic management.

Source: Internal Medicine

DOI: 10.2169/internalmedicine.7396-26

Authors: Teruaki Nishiuma, Yasushi Ichikawa, Shuhei Kuroda, Goro Sakata, Mao Fujii, Shuntaro Tokunaga, Suya Hori, Takashi Mizusaka

Institutions: Kakogawa Central City Hospital, Hyogo Prefectural Harima-Himeji General Medical Center

Language: English

Topic: Pneumonia and Respiratory Infections

Subfield: Epidemiology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: diamond

OpenAlex ID: W7212564742

FWCI:

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