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Fibroblastic reticular cell tumour of the internal iliac lymph node presenting as a hypervascular lesion and mimicking a pseudoaneurysm: an extremely rare diagnosis
  1. Augusto Kreling Medeiros1,
  2. Cinthia Callegari Barbisan1,
  3. Isaac Torres de Carvalho1,
  4. Ulysses dos Santos Torres2 and
  5. Carlos Eduardo Bacchi3
  1. 1Hospital Beneficencia Portuguesa de Sao Paulo, Sao Paulo, Brazil
  2. 2Grupo Fleury, Sao Paulo, Brazil
  3. 3Department of Pathology, Bacchi Laboratory, Botucatu, Brazil
  1. Correspondence to Dr Augusto Kreling Medeiros; gutokmedeiros{at}


A woman in her 50s presented with a rounded and hypervascular lesion in the right internal iliac lymph node chain, contacting with small branches of the anterior division of the internal iliac artery. Since the lesion matched the blood arterial pool in CT and the patient exhibited multiple vascular abnormalities that suggested segmental arterial mediolysis, a pseudoaneurysm hypothesis was initially made. Arteriography was realised due to the intention for embolisation of the pseudoaneurysm, but the dynamic behaviour during the exam suggested a hypervascular tumour more. An MRI was conducted, bringing new evidence, favouring the possibility of a neoplasm. The lesion excision was performed and sent to pathology. Morphological and immunohistochemical findings suggested a rare case of a fibroblastic reticular cell tumour of the internal iliac lymph node.

  • Radiology
  • Oncology
  • Pathology

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  • Contributors AKM, CCB and ITdC are the clinical radiologists accompanying the case in Beneficência Portuguesa de São Paulo. Carlos Eduardo Bacchi is the pathologist responsible for the case analysis. The preliminary draft was written by AKM, followed by revision, and proofreading by all authors. UdST is a radiologist responsible for the final revision, with approbation by all authors.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.