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Amebiasis01:28

Amebiasis

Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...

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18 F-PSMA Expression in Amoebic Liver Abscesses Mimics as Metastatic Prostate Cancer.

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Summary

Prostate-specific membrane antigen (PSMA) PET/CT scans can misdiagnose benign conditions as cancer. This case shows PSMA expression in liver amoebic abscesses, highlighting the need for careful interpretation in prostate cancer management.

Keywords:
PET/CTamoebiasisinflammationliver abscessprostate cancer

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Area of Science:

  • Nuclear medicine
  • Radiopharmaceuticals
  • Oncology

Background:

  • Prostate-specific membrane antigen (PSMA) PET/CT is a key imaging modality in prostate cancer management.
  • Increased PSMA expression can occur in benign conditions, potentially causing diagnostic errors.
  • Awareness of these benign pathologies is vital for accurate clinical decision-making.

Purpose of the Study:

  • To report a case of liver amoebic abscesses exhibiting PSMA expression.
  • To emphasize the potential diagnostic pitfalls of PSMA PET/CT in non-cancerous conditions.
  • To underscore the importance of considering benign pathologies in PSMA PET/CT interpretation.

Main Methods:

  • Case report presentation.
  • Review of imaging findings including ultrasonography and PSMA PET/CT.
  • Discussion of differential diagnoses for PSMA-avid hepatic lesions.

Main Results:

  • Ultrasonography initially suggested necrotic hepatic metastases.
  • PSMA PET/CT demonstrated PSMA expression in the periphery of early hepatic amoebic lesions.
  • The findings highlight a potential misinterpretation of benign amoebic abscesses as metastatic prostate cancer.

Conclusions:

  • Benign conditions like liver amoebic abscesses can exhibit PSMA uptake.
  • Careful correlation with clinical presentation and other imaging modalities is essential to avoid misdiagnosis.
  • Understanding PSMA expression in non-malignant pathologies improves diagnostic accuracy in prostate cancer patients.