Adenovirus Type 11 Pneumonia Mimicking a Legionella Infection in a Patient with Bazex Syndrome and Occult Rectal Cancer
Abstract
Viral pneumonia rarely presents as a unilateral lobar pneumonia. We report the case of a 63-year-old man with severe right-sided lobar pneumonia resembling a Legionella infection, with high fever, dyspnea, hyponatremia, and elevated lactate dehydrogenase levels. Legionella testing was negative, and antibiotics were ineffective. However, multiplex polymerase chain reaction (PCR) revealed the presence of adenovirus, and bronchial wash fluid PCR confirmed adenovirus type 11. Subsequently, he developed skin symptoms consistent with Bazex syndrome and he was also diagnosed with occult rectal cancer. This case highlights that HAdV-11 pneumonia can mimic Legionella pneumonia and that paraneoplastic dermatoses may provide clues to underlying malignancies.
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BibTeX
@article{sugitani2026adenovirus,
title = {{Adenovirus Type 11 Pneumonia Mimicking a Legionella Infection in a Patient with Bazex Syndrome and Occult Rectal Cancer}},
author = {Honami Sugitani and Yuta Nanjo and Aki Aoyama and Kanako Yotsumoto and Tomoha Miyaki and Koichi Jingo and Akifumi Okajima and Hitomi Yoshikawa and Moegi Komura and Kazuhisa Takahashi},
journal = {Internal Medicine},
year = {2026},
month = sep,
doi = {10.2169/internalmedicine.7582-26},
url = {https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7582-26/_article},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Adenovirus Type 11 Pneumonia Mimicking a Legionella Infection in a Patient with Bazex Syndrome and Occult Rectal Cancer
AU - Honami Sugitani
AU - Yuta Nanjo
AU - Aki Aoyama
AU - Kanako Yotsumoto
AU - Tomoha Miyaki
AU - Koichi Jingo
AU - Akifumi Okajima
AU - Hitomi Yoshikawa
AU - Moegi Komura
AU - Kazuhisa Takahashi
PY - 2026
DA - 2026/09/29
JO - Internal Medicine
DO - 10.2169/internalmedicine.7582-26
UR - https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7582-26/_article
AB - Viral pneumonia rarely presents as a unilateral lobar pneumonia. We report the case of a 63-year-old man with severe right-sided lobar pneumonia resembling a Legionella infection, with high fever, dyspnea, hyponatremia, and elevated lactate dehydrogenase levels. Legionella testing was negative, and antibiotics were ineffective. However, multiplex polymerase chain reaction (PCR) revealed the presence of adenovirus, and bronchial wash fluid PCR confirmed adenovirus type 11. Subsequently, he developed skin symptoms consistent with Bazex syndrome and he was also diagnosed with occult rectal cancer. This case highlights that HAdV-11 pneumonia can mimic Legionella pneumonia and that paraneoplastic dermatoses may provide clues to underlying malignancies.
SN - 1349-7235
SN - 0918-2918
ER -