Metastatic carcinoma presenting as fulminant hepatic failure

Area of Science:

• Oncology
• Hepatology
• Pathology

Background:

• Fulminant hepatic failure (FHF) is a rare clinical syndrome with high mortality.
• Primary lung cancer, particularly small cell lung carcinoma (SCLC), is an uncommon cause of FHF.
• Metastatic disease to the liver is a known complication of SCLC, but massive hepatic infiltration causing FHF is rare.

Observation:

• A patient presented with symptoms suggestive of liver disease, rapidly progressing to FHF.
• The patient was diagnosed with a small primary oat cell carcinoma of the lung.
• Massive hepatic metastases from the lung cancer were identified as the cause of liver failure.

Findings:

• The patient exhibited rapid clinical deterioration with significant elevations in serum glutamic-oxaloacetic transaminase (SGOT).
• Liver examination revealed two distinct patterns of hepatic necrosis: tumor emboli-induced infarction in portal vessels and direct tumor cell infiltration.
• The pathological findings indicated extensive liver involvement by the oat cell carcinoma, leading to organ failure.

Implications:

• This case highlights the importance of considering uncommon etiologies, such as SCLC with extensive hepatic metastases, in the differential diagnosis of FHF.
• Early recognition and diagnosis of such metastatic disease are crucial for appropriate patient management.
• Further research into the mechanisms of rapid hepatic failure secondary to SCLC metastasis may improve treatment strategies.