Nevus sebaceus of Jadassohn - high frequency ultrasound imaging and videodermoscopy examination. Case presentation.

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.

Basal cell carcinoma invasion depth determined with 30 and 75 MHz high-frequency ultrasound and histopathology - a comparative study.

Aim: To compare the depth spread of basal cell carcinoma (BCC) measured by histological examination and high-frequency ultrasound (HFUS) imaging with 30-MHz and 75-MHz probes.

Materials And Methods: HFUS skin imaging was used to examine 27 BCCs. A specialized high-resolution digital ultrasound imaging system DUB (TPM GmbH, Germany) with 75-MHz and 30-MHz probes was used.

[Langerhans cell histiocytosis: Skin diseases and visceral lesions].

Langerhans cell histiocytosis (LCH) is a rare clonal proliferative disorder that belongs to class I histiocytoses and is characterized by infiltration of one or many organs by Langerhans cells to form granulomas. The literature analysis could identify a lot of etiological, pathogenetic, and trigger factors and mechanisms for LCH development, which determine the diversity of the clinical picture and course of the disease. The clinical manifestations of LCH are very variable and depend on the severity of lesions and the age of patients.

[The evaluation of the ratio of free and total serum prostate-specific antigen as an additional method in the diagnosis of prostatic cancer].

The conventional method of prostatic cancer monitoring by determination of serum prostatic specific antigen (PSA) was compared to the method of free-to-total PSA correlation. The latter proved more informative concerning prostatic cancer.

[Preparation of physiologically active polymethylmethacrylate on lanthanoid silylamides].

Catalytic activity of silylamide derivatives of three-valent lanthanoids [(Me3Si)2N]3Ln (where Me-CH3; Ln-Pr, Sm, Eu, Gd, Tb, Er, Yb) was studied under conditions of low temperature polymerization of methacrylate. The reaction involved an anion-dependent mechanism and was accompanied by formation of block polymer. The physiological activity of the polymethacrylate produced was manifested as stimulation of the growth rate in bone tissue after its impairments.