High frequency ultrasonography of the skin and its role as an auxillary tool in diagnosis of benign and malignant XXXX - a comparison of two clinical cases.

@entity1 @entity2695 @entity5 @entity1489 @entity75 @entity4482 @entity3 @entity272 @entity320
The number of dermatologic entities that can be studied by ultrasound examination (US) of the skin is increasing. Conventional US and high frequency US (HFUS) are considered useful additional tools in improving the diagnosis and management of common benign and malignant @entity1489 . US may help in positive and differential diagnosis of primary @entity5 and of locoregional spread in @entity320 @entity1 . US preoperative evaluation of primary @entity320 thickness correlates with histologically estimated @entity320 thickness, and can help determine surgical margins and indications for sentinel lymph node biopsy. It is also useful during follow-up after surgical treatment for early detection of recurrence or @entity3 . In this case report, we present two cases of @entity272 clinically suspicious for @entity5 . The first lesion was a round nodule 3 mm in diameter, resembling a @entity4482 . In HFUS it was well delimited, hypoechoic, and well vascularized. The second lesion presented as an elevated, well-circumscribed nodule, 5-6 mm in diameter, inhomogeneous in color. HFUS depicted a poorly delimited, irregular, @entity75 crossing the dermoepidermal junction. At the first exam it was not vascularized, but 6 months later a number of vascular flow signals within the lesion were found. In histopathological examination the lesions were finally diagnosed as, respectively: benign cavernous @entity2695 and @entity320 . In both presented cases HFUS proved to be useful in a differential diagnosis of suspicious @entity272 . Noninvasive and easy to perform, HFUS is a valuable diagnostic method in dermatology.
