A Complicated Case of Primary Gastric Actinomycosis and Gastrointestinal Peripheral T-Cell Lymphoma

Waki, Yuhei; Yamamoto, Kōji; Hidenori, Takatsuki; Matsuda, Ryoichi; Maeda, Toshiharu

doi:10.5833/jjgs.2016.0166

Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi

2017

DOI: 10.5833/jjgs.2016.0166

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A Complicated Case of Primary Gastric Actinomycosis and Gastrointestinal Peripheral T-Cell Lymphoma

Yuhei Waki¹,

Kōji Yamamoto²,

Takatsuki Hidenori³

et al.

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2024

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Cited by 1 publication

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Extranodal Natural Killer/T-cell Lymphoma, Nasal Type Occurring After Actinomyces Infection: A Case Report

Katoh,

Mukai,

Kuriyama

et al. 2024

Cureus

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The pathogenesis of extranodal natural killer/T-cell lymphoma (ENKTL) remains largely unknown. Herein, we present a case of ENKTL that may have occurred during the treatment of Actinomyces infection. A 69-year-old woman was admitted to our hospital with nasal bleeding, and a nasopharyngeal mass was observed. The patient was diagnosed with Actinomyces infection on biopsy, and oral antibiotics were administered. The tumor decreased in size; however, swelling of the nasal mucosa and perforation of the nasal septum were observed. A biopsy revealed a recurrence of Actinomyces infection, and oral antibiotics were again administered. The mucosal swelling improved temporarily, but the condition gradually deteriorated. The patient was diagnosed with ENKTL based on a third biopsy. Retrospective evaluation of the biopsies showed that there were no CD56-positive cells in the first specimen; however, the number of CD56-positive cells gradually increased in the second and third specimens. We retrospectively observed the occurrence of ENKTL under chronic inflammatory conditions due to Actinomyces infection in this case. In addition, this case suggests that the possibility of malignancy must be considered when managing such patients with Actinomyces infection.

show abstract

Extranodal Natural Killer/T-cell Lymphoma, Nasal Type Occurring After Actinomyces Infection: A Case Report

Katoh,

Mukai,

Kuriyama

et al. 2024

Cureus

View full text Add to dashboard Cite

show abstract

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A Complicated Case of Primary Gastric Actinomycosis and Gastrointestinal Peripheral T-Cell Lymphoma

Cited by 1 publication

References 16 publications

Extranodal Natural Killer/T-cell Lymphoma, Nasal Type Occurring After Actinomyces Infection: A Case Report

Extranodal Natural Killer/T-cell Lymphoma, Nasal Type Occurring After Actinomyces Infection: A Case Report

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