Assertion: amelanotic melanoma | /r/HasProperty | difficult to detect
Facets:
value: very
type: DEGREE
Source sentences:
text: Amelanotic melanomas and melanomas arising in fair-skinned individuals are very difficult to detect, as they fail to show many of the characteristics in the ABCD rule, break the "Ugly Duckling" sign and are hard to distinguish from acne scarring, insect bites, dermatofibromas, or lentigines.