AL amyloidosis with primary presentation of multiple serous cavity effusion and severe cholestasis: a case report and review of literature.

Background: Immunoglobulin light chain (AL) amyloidosis commonly affects the kidney or heart, but may also involve the liver at a histopathological level. Early diagnosis of AL amyloidosis is important for proper management with desirable outcome. We reported here an unusual case of AL amyloidosis, presenting primarily with multiple serous cavity effusion, accompanied with rapidly progressive cholestasis. Case presentation: A previously healthy 63-year-old man presented with dysuria, frequent urination, oliguria and oedema of lower extremities for one month, accompanied with jaundice and hypoproteinemia. CT demonstrated multiple serous cavity effusion, focal hypodense lesions in the liver, and focal low-density in the spleen. Laparoscopy with liver biopsy revealed liver and spleen fibrosis with congestion, no visceral rupture, following haemorrhagic ascites from abdominocentesis. This patient was transferred to our (tertiary) hospital. The diagnosis of amyloidosis was confirmed with histopathology/immunohistochemistry. Haematopoietic stem cell transplantation was not applicable, however chemotherapy was advised, due to the patient's Mayo score 3. The patient declined chemotherapy and was self-discharged back to his hometown hospital with palliative care, however only lasted a further one-month. Discussion: The lesson we have learnt from this case that any patients with multiple serous cavity effusion and isolated hepatic involvement, primary amyloidosis should be considered. Multiple serous cavity effusion may serve as an indicator for poor prognosis of hepatic AL amyloidosis. [ABSTRACT FROM AUTHOR]

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