Introduction:There is increased incidence of heart valve diseases in recent years due to life style modifications. The mortality rates in the heart valvular diseases are kept in pace using various modes of treatments. One such treatment is valve replacement surgery. It's done either by using mechanical valve prosthesis or tissue grafts. The tissue valves prosthesis, harvested from porcine heart are called as xenograft and are increasingly used in valve repair surgeries. In the present scenario, there is less number of systematically analysed literatures available on the comparative anatomy of human and porcine heart valves. Hence this study was carried out to acquire knowledge and to put forth some points to future research works on heart valves. Materials and methods: In this study, 20 formalin fixed porcine and human hearts were procured from slaughter house and cadavers respectively. The morphology and morphometry of mitral valve were observed and analysed using spss software 20 version. All the dependent variables were compared using student t test and independent sample test. Observation and results: it was observed that the mean circumference of the human mitral valve was 82.31mm and that of the porcine was 78.79 mm. The rough zone and clear zone was more prominent in porcine heart valves than the human heart valves. It was observed that the mitral valve of the porcine resembles the human heart valve in morphology and morphometrical values were coinciding to their maximum. Conclusion: The porcine valve resembles human heart valves in morphology and it can be used in designing valve substitutes in replacement surgeries. Porcine valve can also be used as bio-prosthesis by matching the morphometry and by reducing the geometrical difference to their minimum by using any modes of interventional radiology.

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The right lung has two fissures which separate the lung into three lobes. They are the oblique fissure and the horizontal fissure and the lobes are superior, middle and the inferior lobes respectively arranged from the apex of the lung to the base. In the present case, during routine dissection the right lung was observed to have complete absence of both oblique fissure and horizontal fissure and there was no lobar pattern. The lung pleural membrane was continuous from the apex to the base. Hilum structures were arranged normally. Left lung was completely normal with no variation. Variation of anatomy of lung fissures is important in case of diagnosis of lung pathologies and in the modality of treatment for segmental resection of lung.