Localization on the palmar face of the hand of a Darier-Ferrand dermatofiborosarcoma. About a case

Darier-Ferrand dermatofibrosarcoma is a rare but not exceptional malignant mesenchymal skin tumor, representing 0.1 % of malignant skin tumors. It is characterized by high recurrence, slow growth and low metastatic potential. Although several clinical cases of an unusual variant of Darier-Ferrand dermatofibrosarcoma have been reported in the literature, localization on the palmar face of the hand is not common. We report a case of Darier and Ferrand dermatofibrosarcoma at the level of the fourth commissure of the palm of the left hand in a 43- year-old young Malagasy adult treated by a large surgical excision with a healthy margin of two centimeters associated with adjuvant chemotherapy with Imatinib.

Investigation of Free Surface Magnetohydrodynamics Boundary Layer Flow With Heat Transfer over an Unsteady Stretching Sheet

The study of thin liquid film flow is equally critical for engineers, mathematicians and physicists. The engineering revolution core is expended by the impacts of lubrication and microelectronics industry. In general, thin liquid film flow occurs widely in nature and also in various industrial processes namely, thin liquid films are encountered in any lubrication problem (lubricating gears, bearings, metered coating, cold rolling of steel), in microelectronics industry (manufacture of CDs, DVDs, screen, electronic circuit, microelectronics chips and computer disks), in printing technology (drop spreading process), in heat and mass transfer devices (spinning disk reactors and distillation columns) to limit fluxes and to protect surfaces etc. In this research the attention has been given to the analysis of theocratical investigation of magnetohydrodynamics flows over an unsteady stretching sheet. Non-dimensional scaling are used for the governing equations with finite boundary conditions to transform into their dimensionless form. Different physical effects are involved in the respective problems, to observed the effects on the boundary layer flows. Similarly different types of fluid are investigated for the MHD unsteady thin film flow such as Newtonian fluid, non-Newtonian fluids (second grade fluids, Casson fluid and nanofluids). Magnetic field is normal to the direction of flow in all the respective problems. Effects for various physical parameters are investigated in the form of tables and figures. HAM and BVP4C are used for the solutions of the problems.