Fatal tumour pulmonary embolism

Area of Science:

• Oncology
• Pulmonary Medicine
• Pathology

Background:

• Pulmonary tumor embolism (PTE) is an exceedingly rare condition.
• It is often associated with occult (hidden) primary neoplasms.
• PTE can present insidiously or acutely, mimicking other cardiopulmonary emergencies.

Observation:

• A 30-year-old female presented with acute shortness of breath and was initially suspected to have pulmonary thromboembolism.
• Computed tomography angiography revealed enlarged pulmonary arteries without evidence of in situ thrombi.
• The patient experienced recurrent hypotension and hypoxia, ultimately succumbing despite intensive care.

Findings:

• Autopsy identified extensive lymphatic and pulmonary vascular tumor emboli as the direct cause of death.
• No primary tumor was evident clinically, suggesting an occult neoplasm.
• Histopathological examination confirmed widespread neoplastic infiltration of the pulmonary vasculature.

Implications:

• This case underscores the importance of considering PTE in the differential diagnosis of unexplained acute respiratory distress, even in young patients.
• The findings highlight the potential for widespread metastatic disease from an occult primary malignancy to manifest as acute cardiopulmonary failure.
• Early recognition and diagnosis of PTE, though challenging, are crucial for potential therapeutic interventions and patient management.