A Case of Severe Pneumonia with Extensive Lung Abscesses Due to a Klebsiella Isolate Presumptively Identified as Klebsiella Pneumoniae Subsp. Rhinoscleromatis
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.
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BibTeX
@article{nishiuma2026case,
title = {{A Case of Severe Pneumonia with Extensive Lung Abscesses Due to a Klebsiella Isolate Presumptively Identified as Klebsiella Pneumoniae Subsp. Rhinoscleromatis}},
author = {Teruaki Nishiuma and Yasushi Ichikawa and Shuhei Kuroda and Goro Sakata and Mao Fujii and Shuntaro Tokunaga and Suya Hori and Takashi Mizusaka},
journal = {Internal Medicine},
year = {2026},
month = sep,
doi = {10.2169/internalmedicine.7396-26},
url = {https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7396-26/_article},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - A Case of Severe Pneumonia with Extensive Lung Abscesses Due to a Klebsiella Isolate Presumptively Identified as Klebsiella Pneumoniae Subsp. Rhinoscleromatis
AU - Teruaki Nishiuma
AU - Yasushi Ichikawa
AU - Shuhei Kuroda
AU - Goro Sakata
AU - Mao Fujii
AU - Shuntaro Tokunaga
AU - Suya Hori
AU - Takashi Mizusaka
PY - 2026
DA - 2026/09/15
JO - Internal Medicine
DO - 10.2169/internalmedicine.7396-26
UR - https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7396-26/_article
AB - 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.
SN - 1349-7235
SN - 0918-2918
ER -