Evidence map›Paper›PMID 40346722›Full record

ArticleGeneral thoracic and cardiovascular surgery cases2025

A case of pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma in a patient with a history of idiopathic lymphocytic interstitial pneumonia (iLIP).

Katsushi Toyohara, Hiroya Ishihara, Takuro Morita, Yuki Shindo, Sho Takeda, Satoshi Fumimoto, Kaoru Ochi, Yoshio Ichihashi, Kiyoshi Sato, Hiroko Kuwabara and 2 more

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Article in General thoracic and cardiovascular surgery cases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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12 authors.

Katsushi ToyoharaDepartment of Thoracic Surgery, Hirakata Municipal Hospital, Osaka, Japan.
Hiroya IshiharaDepartment of Thoracic Surgery, Kishiwada City Hospital, Osaka, Japan.
Takuro MoritaDepartment of Thoracic Surgery, Yao Tokushukai General Hospital, Osaka, Japan.
Yuki ShindoDepartment of Thoracic Surgery, Takatsuki Red Cross Hospital, Osaka, Japan.
Sho TakedaDepartment of Thoracic and Cardiovascular Surgery, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Satoshi FumimotoDepartment of Thoracic and Cardiovascular Surgery, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Kaoru OchiDepartment of Thoracic Surgery, Hokusetsu General Hospital, Osaka, Japan.
Yoshio IchihashiDepartment of Thoracic Surgery, Yao Tokushukai General Hospital, Osaka, Japan.
Kiyoshi SatoDepartment of Thoracic and Cardiovascular Surgery, Osaka Medical and Pharmaceutical University, Osaka, Japan. skiyoshi@ompu.ac.jp.ORCID http://orcid.org/0000-0001-6130-0494
Hiroko KuwabaraDepartment of Pathology, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Nobuharu HanaokaDepartment of Thoracic and Cardiovascular Surgery, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Takahiro KatsumataDepartment of Thoracic and Cardiovascular Surgery, Osaka Medical and Pharmaceutical University, Osaka, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPulmonary mucosa-associated lymphoid tissue (MALT) lymphoma and idiopathic lymphocytic interstitial pneumonia (iLIP) are rare pulmonary diseases. MALT lymphoma is an extranodal marginal zone lymphoma (EMZL), whereas LIP is a benign lymphoproliferative disorder characterized by lymphocytic infiltration of the lungs. LIP should be closely monitored, as it has the potential to undergo malignant transformation into MALT lymphoma. CASE PRESENTATION: A 45-year-old woman was diagnosed with LIP and followed up for 9 years before being referred to our hospital due to an enlarging shadow on chest radiographs. The volume of the sample collected via bronchoscopy was too small to make a diagnosis, so the patient underwent surgery. The pathology results revealed diffuse proliferation of medium-sized lymphocytes filling the alveolar spaces, leading to a diagnosis of MALT lymphoma. After a thorough examination, no other lesions were found, confirming the diagnosis of EMZL of the lung, a primary pulmonary lymphoma (PPL). No postoperative treatment was administered after surgery; however, 2 years later, recurrence was detected in the stomach, and the patient underwent chemotherapy. Complete remission was achieved through chemotherapy, and the patient has been recurrence-free for 3 years since her treatment.

conclusionsWe report a rare case of MALT lymphoma that developed 9 years after the diagnosis of LIP. Since LIP can undergo malignant transformation into EMZL, it is important to be aware of this possibility. Differentiating between the two diseases onthe basis ofclinical and imaging findings is challenging, so biopsytechniques, such as transbronchial biopsy, CT-guided needle aspiration biopsy, and surgical resection, are essential. While surgery is the standard treatment for primary pulmonary lymphoma, observation is a viable option, as it provides results comparable to those of other treatment approaches.

Indexed as

Extranodal marginal zone lymphoma (EMZL)Idiopathic interstitial pneumonias (IIPs)Idiopathic lymphocytic interstitial pneumonia (iLIP)Primary pulmonary lymphoma (PPL)Pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma

Identifiers

PMID40346722
PMCPMC12065140

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