Evidence map›Paper›PMID 40830970›Full record

ArticleOrphanet journal of rare diseases2025

A rare cause of diffuse alveolar hemorrhage in a pediatric patient: thigh localization of INI1-deficient epithelioid sarcoma.

Xiaolei Tang, Zhipeng Zhao, Xingfeng Yao, Chunju Zhou, Shuai Gong, Haiming Yang

Abstract readCase Reports
In one paragraph

Article in Orphanet journal of rare diseases, 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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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Xiaolei TangDepartment of Respiratory Medicine, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, No.56 Nanlishi Road, Beijing, China.ORCID 0000-0002-4381-2872
Zhipeng ZhaoDepartment of Respiratory Medicine, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, No.56 Nanlishi Road, Beijing, China.
Xingfeng YaoDepartment of Pathology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
Chunju ZhouDepartment of Pathology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
Shuai GongDepartment of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
Haiming YangDepartment of Respiratory Medicine, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, No.56 Nanlishi Road, Beijing, China. yanghaiming830@163.com.

Funding

National Natural Science Foundation of China 82202061Natural Science Foundation of Xinjiang Uygur Autonomous Region 2022D01D55
6 · The paper itself

Abstract

backgroundDiffuse alveolar hemorrhage (DAH) is a group of rare but life-threatening conditions characterized by bleeding into the alveolar spaces, often associated with various etiologies. Epithelioid sarcoma (ES) is a rare and aggressive soft tissue sarcoma that has never been reported to be associated with DAH.

methodsWe report a rare case of ES in a pediatric patient presenting with DAH and intracranial hemorrhagic lesions. Diagnostic evaluations included high-resolution chest CT (HRCT), bronchoscopy, brain MRI, lung biopsy, Positron emission tomography - computed tomography (PET-CT), and biopsy of a mass in the right thigh. Fluorescence in situ hybridization was performed to detect SMARCB1 (INI1) gene deletion.

resultsA 13-year-old male presented with anemia and later developed hemoptysis with a decreased hemoglobin level. HRCT revealed bilateral ground-glass opacities consistent with DAH. Extensive autoimmune and infectious workups were all negative. Brain MRI demonstrated microhemorrhages. Despite corticosteroid therapy, the patient's condition worsened. PET-CT identified a hypermetabolic soft tissue mass in the right thigh, which on histopathological examination was confirmed as INI1-deficient ES. FISH analysis confirmed INI1 deletion.

conclusionThis case highlights the diagnostic challenges of INI1-deficient ES presenting with DAH and underscores the importance of considering malignancy in pediatric patients with atypical DAH. Multidisciplinary approaches, including advanced imaging and molecular diagnostics, are crucial for accurate diagnosis and management.

Indexed as

HemorrhagePulmonary AlveoliSarcomaSMARCB1 ProteinSoft Tissue NeoplasmsAdolescentHumansMaleThighSMARCB1 ProteinSMARCB1 protein, humanDiffuse alveolar hemorrhageEpithelioid sarcomaINI1 deficiencyIntracranial hemorrhagePediatric

Identifiers

PMID40830970
PMCPMC12366077

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.