sonographic assessment of tubal pregnancy and its differential diagnosis were based on six criteria : ( 1 ) the presence or absence of gestational structures within the fallopian tube , ( 2 ) the presence or absence of amorphous material in a dilated fallopian tube , ( 3 ) the presence or absence of indirect signs of ectopic pregnancy within the pelvis , ( 4 ) the echogenicity of a suspected finding relative to the ovary , ( 5 ) the presence or absence of flow ( of lacunar origin ) within the suspected sonographic finding , and ( 6 ) the relationship of a suspected sonographic sign to an intentionally displaced ovary .
C0032994
tubal pregnancy
C0032987
ectopic pregnancy