Very high frequency ultrasonographic characteristics of poroma: a retrospective observational study

Background Poroma is a rare benign skin tumor, diagnostic challenges of which require advanced imaging. Herein we investigate the ultrasonographic manifestations and clinical value of the very high frequency(VHF) ultrasound in the auxiliary diagnosis of Poroma. Methods Clinical data of 24 cases pathologically diagnosed as poroma were retrospectively analyzed by means of high-resolution VHF ultrasound, including size, location, shape, margin, boundary, internal echo and blood flow patterns. Results VHF ultrasound examination shows that most poroma are located in the epidermis and dermis. The maximum diameter was 2.6–30 (11.86 ± 6.31) mm. The tumor has clear borders, and the echo intensity of most lesions(22/24) was heterogeneous hypoechoic. Most lesions(18/24) showed small duct-like anechoic areas, 6 lesions(6/24) were detected with punctate calcification. In terms of blood flow, most lesions(18/24) showed abundant blood flow signals, which were dendritic. Conclusions The VHF ultrasound lacks specificity in diagnosing poroma and currently makes accurate qualitative diagnosis difficult, but it holds significant value for assessment. It can clearly define the lesion’s location, layers, number, size, boundaries, relationship to surrounding structures, and internal blood supply. This provides an objective basis for selecting the next diagnostic or treatment plan, and it can also serve as an evaluation. method for postoperative follow-up.