Nevus sebaceus of Jadassohn (NSJ) is a congenital cutaneous hamartoma mainly developing from pilosebaceous unit cells. NSJ has the potential to develop into a variety of benign and malignant tumors, which are not limited to sebaceous differentiation. The dynamical monitoring for the earliest malignant transformation is necessary. Herein, we report the combined noninvasive NSJ examination with videodermoscopy in polarized and non-polarized light and high-frequency ultrasound (HFUS) imaging at 33 and 50 MHz. Typical NSJ dermoscopic signs where described, the internal nevus structure and its location, depths, and margins with surrounded tissues were examined with high-frequency ultrasound.
Some HFUS characteristics for NSJ were described. Videodermoscopy and high-frequency ultrasound combined examination could be useful for NSJ dynamical monitoring in order to detect malignant transformation and to define necessary and sufficient tissue excision volume in case of surgical treatment.
Introduction: Mesenchymal stromal cells (MSCs) administration is an effective option for the treatment of diabetic foot ulcers (DFUs). However, to date, studies assessing long-term outcomes and evaluating skin parameters after cell-based therapy are lacking. We presented the clinical outcomes of 3 patients, treated for DFUs with the bone marrow MSCs 3 years earlier. Methods: Ultrasound examination was used to compare collagen density and epidermal thickness in areas of healed ulcers in comparison with non-affected skin used as a control. Ultrasound and dermatoscopy were used to exclude neoplasm formation, to assess scar contracture and wound recurrence. Results: In all patients, no ulcer recurrence was detected, which was lower than the expected 60% rate of re-ulceration in diabetic patients in a 3-year period (OD [odds ratio] = 0.095, P = 0.12). No neoplasm formation, no contracture of hypertrophic scar, and adjacent tissue were registered. Collagen ultrasound density was decreased by 57% (P = 0.053) and epidermal thickness was increased by 72% (P = 0.01) in the area of healed ulcers in all patients. Conclusion: MSCs therapy alone did not result in the complete restoration of the skin parameters within a 3-year period. MSCs may represent important adjuvant to the therapy, however, other novel approaches are required to achieve better results.
The article presents the study results for available options as well as diagnostics value and limitations related to
skin ultrasound scans in medical cosmetology. The authors applied the skin ultrasound scanning method at 22 MHz
and 75 MHz to visualize the structure of epidermis, derma and subcutaneous cellular tissue. Patients with chronic
inflammatory dermatoses, skin neoplasms, cicatrical changes and age-related skin changes made a part of the sample
under examination. The authors obtained scanograms of the skin structure and used them to measure the depth of
different skin layers and formations as well as tissue echodensity. The qualitative and quantitative data were applied to
specify the clinical diagnosis and assess the treatment efficacy.
A comparative study of micro-focused ultrasound in monotherapy and combined use with autologous blood cells was conducted. In assessing the effectiveness of the procedures studied the qualitative characteristics of the skin and ultrasound scanning data. All patients (35) with involutional changes of the skin at the procedures were divided into tho groups: combined application of ultrasound macrofocusrange with autologous red blood cells and macrofocusrange ultrasound as monotherapy. The results of the study, data were obtained that showed a more pronounced clinical effect in patients treated with the combined use of ultrasound macrofocusrange with autologous red blood cells.
To describe ultrasonographic image of human skin with cellulite, the authors used high-frequency ultrasound visualization of the skin with a frequency of 22 MHz using a system DUB (tpm GmbH Germany). The skin on the thigh in 15 patients with cellulite and in 10 patients in the control group was examined. The differences in thickness and acoustic density of dermis and subcutaneous tissue between the group of patients with cellulite and in control were described. Objective data of high frequency ultrasound allow to quantify morphological and functional parameters of the skin in the dynamics and results of cellulite correction.
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