The term esophageal veins is identified in base64 scheme by the sequence ZXNvcGhhZ2VhbCB2ZWlucw==, while the MD5 signature is equal to 638fc481fdde9facc32ba714ce5349a1. The ASCII encoding of esophageal veins in hexadecimal notation is 65736f7068616765616c207665696e73.