The term portacaval shunt is identified in base64 scheme by the sequence cG9ydGFjYXZhbCBzaHVudA==, while the MD5 signature is equal to 818244af13b4b84916dbc21395de85c3. The ASCII encoding of portacaval shunt in hexadecimal notation is 706f727461636176616c207368756e74.