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Abstract

The objective of the study was to create a printable 3D model of the sellar region of the sphenoid bone for demonstrating anatomical variant of the osseous bridging between anterior and posterior clinoid processes. Three-dimensional reconstruction of the middle cranial fossa along with 3D printed model, allow for accurate depicting position of the interclinoid bridge with reference to other basicranial structures.

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Authors and Affiliations

Janusz Skrzat
Anna Bonczar
Tomasz Kasprzycki
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Abstract

O b j e c t i v e s: To evaluate the properties of natural sweetener solutions in whole organ preservation and assess their influence on the dimension, weight and shape of cardiac tissue samples in stated time intervals, up to a one-year period of observation.

B a c k g r o u n d: Tissue fixation is essential for biological sample examination. Many negative toxic effects of formaldehyde-based fixatives have forced us to seek alternatives for formaldehyde based solutions. It has been demonstrated that natural sweeteners can preserve small tissue samples well and that these solutions can be used in histopathological processes. However, their ability to preserve whole human organs are unknown.

M e t h o d s: A total of 30 swine hearts were investigated. Th ree study groups (n = 10 in each case) were formed and classifi ed on the type of fixative: (1) 10% formaldehyde phosphate-buffered solution (FPBS), (2) 10% alcohol-based honey solution (ABHS), (3) 10% water-based honey solution (WBHS). Samples were measured before fi xation and in the following time points: 24 hours, 72 hours, 168 hours, 3 months, 6 months and 12 months.

R e s u l t s: The WBHS failed to preserve heart samples and decomposition of tissues was observed one week after fixation. In half of the studied parameters, the ABHS had similar modifying tendencies as compared to FPBS. Th e overall condition of preserved tissue, weight, left ventricular wall thickness, right ventricular wall thickness and the diameter of the papillary muscle differed considerably.

C o n c l u s i o n s: The ABHS may be used as an alternative fi xative for macroscopic studies of cardiac tissue, whereas the WBHS is not suited for tissue preservation.

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Authors and Affiliations

Katarzyna Piątek-Koziej
Jakub Hołda
Mateusz Koziej
Kamil Tyrak
Katarzyna A. Jasińska
Anna Bonczar
Jerzy A. Walocha
Mateusz K. Hołda
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Abstract

Authors paid attention to anatomy and clinical implications which are associated with the variations of the sphenoid sinus. We discuss also anatomical structure of the sphenoid bone implementing clinical application of this bone to diff erent invasive and miniinvasive procedures (i.e. FESS).

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Authors and Affiliations

Joanna Jaworek-Troć
Michał Zarzecki
Anna Bonczar
Lourdes N. Kaythampillai
Bartosz Rutowicz
Małgorzata Mazur
Jacenty Urbaniak
Wojciech Przybycień
Katarzyna Piątek-Koziej
Marcin Kuniewicz
Marcin Lipski
Wojciech Kowalski
Janusz Skrzat
Marios Loukas
Jerzy Walocha

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