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ArticleMolecular and clinical oncology2025

Challenging differentiation of oral malignant lymphoma from osteomyelitis of the jawbone: A case report.

Takeshi Munekata, Takuya Asaka, Ken-Ichiro Sakata, Taku Kimura, Aya Matsuda, Nako Maishi, Chiharu Satoh, Yoshimasa Kitagawa

Abstract readCase Reports
In one paragraph

Article in Molecular and clinical oncology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

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1 citing paper in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Takeshi MunekataDepartment of Oral Diagnosis and Medicine, Hokkaido University Graduate School of Dental Medicine, Sapporo, Hokkaido 060-8586, Japan.
Takuya AsakaDepartment of Oral Diagnosis and Medicine, Hokkaido University Graduate School of Dental Medicine, Sapporo, Hokkaido 060-8586, Japan.
Ken-Ichiro SakataDepartment of Oral Diagnosis and Medicine, Hokkaido University Graduate School of Dental Medicine, Sapporo, Hokkaido 060-8586, Japan.
Taku KimuraDepartment of Oral Diagnosis and Medicine, Hokkaido University Graduate School of Dental Medicine, Sapporo, Hokkaido 060-8586, Japan.
Aya MatsudaDepartment of Vascular Biology and Molecular Pathology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Hokkaido 060-8586, Japan.
Nako MaishiDepartment of Vascular Biology and Molecular Pathology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Hokkaido 060-8586, Japan.
Chiharu SatohDepartment of Oral Diagnosis and Medicine, Hokkaido University Graduate School of Dental Medicine, Sapporo, Hokkaido 060-8586, Japan.
Yoshimasa KitagawaDepartment of Oral Diagnosis and Medicine, Hokkaido University Graduate School of Dental Medicine, Sapporo, Hokkaido 060-8586, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Malignant lymphoma (ML) of the head and neck frequently occurs in the cervical lymph nodes and Waldeyer's ring. Although ML of the maxillofacial region is rare, extranodal ML can present with symptoms similar to those of inflammation and other tumors, making diagnosis difficult. The present study describes the case of a 59-year-old female patient with ML, which was difficult to distinguish from mandibular osteomyelitis. The patient presented to Department of Oral Medicine, Hokkaido University Hospital (Sapporo, Japan) for evaluation of left cheek swelling and osteomyelitis. The X-ray examination, and contrast-enhanced CT and MRI images indicated chronic odontogenic mandibular osteomyelitis. The diagnosis of chronic osteomyelitis was pathologically confirmed by biopsy of the tooth with an apical lesion and surrounding bone, and the extraction socket demonstrated early epithelialization. However, the swelling persisted. Therefore, a second biopsy was performed, which revealed only inflammatory findings. The blood test results were unremarkable, and the diagnosis was consistent between bone scintigraphy and FDG-PET. The swelling worsened 6 months after the initial examination, and a palpable hard lump was observed in the left mandibular vestibule. A third biopsy was performed due to the presence of left facial nerve paralysis, which confirmed the diagnosis of diffuse large B-cell lymphoma. The patient was treated with rituximab, cyclophosphamide, doxorubicin, vincristine and prednisolone. The soft tissue thickening and cheek swelling were resolved, and the patient achieved remission. In the present case, the diagnosis was challenging due to the presence of chronic mandibular osteomyelitis derived from periapical periodontitis and extranodal marginal lymphoma of the mandible. Establishing a diagnosis of ML by biopsy can be complex, and considering the possibility of ML when managing unusual and persistent facial swelling is important.

Indexed as

biopsydifferential diagnosisdiffuse large B-cell lymphomamalignant lymphomaosteomyelitis

Identifiers

PMID40297500
PMCPMC12035799

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