title: [Primary malignant melanoma of the orbit A- and B-scan echographic characteristics].
abstract: Authors describe the echographic characteristics A and B-scan of a malignant primitive melanoma of the orbit and the diagnostic difficulties. In fact we do not have, in the scientific literature, abstracts with an echographic description. The A-scan shows us a characteristic pattern: a frontal big echo followed from many lessing echoes not returning to the zero line; finally a big closing echo. The B-scan shows us a neoformation of regular aspect with clear limits, dishomogeneous inside, near the ocular bulb. The echographic pattern is construed like a cystic neoformation because of the final echo and the good echographic transmission. This pattern is very similar to the echographic aspects of the choroideal malignant melanoma.
mesh_terms: D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis*; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000175:diagnosis*; D014463:Ultrasonography
vernacular_title: Melanoma maligno primitivo dell'orbita: caratteristiche ecografiche A e B-scan.