Desmoid fibromatosis following surgery of an intradural spinal lipoma in a young cat

Background Intradural lipomas have been previously reported in individuals with spinal dysraphism; however, they have not been reported in cats with an intact spinal canal. Desmoid tumors are a rare finding in veterinary medicine, and there is no prior description of these tumors invading the spinal cord. Furthermore, the etiopathogenesis remains debated, with trauma, such as surgical intervention of an intradural structure, potentially contributing to its development. Case description A 10-month-old domestic shorthair cat was presented initially with progressive proprioceptive ataxia. The MRI identified an intradural compressive lesion at the cranio-cervical junction, confirmed as a lipoma by histopathology. Despite surgical removal, postoperative complications led to the cat's euthanasia . Postmortem examination revealed invasion of a desmoid tumor at the surgical site. Conclusions This case highlights the rarity of intradural lipomas in this location and the unusual complication of desmoid tumor invasion. It underscores the need for further research into the underlying mechanisms and potential diagnostic and therapeutic strategies for similar cases and suggests that these findings may be added to the list of potential post-surgical complications

Thermal management in a biological tissue in order to destroy tissue under local heating process

In this study, the thermal management in a biological tissue in order to destroy tissue under local heating process is carried out. A trocar is used as a tool to destroy tissue in the liver that is connected to a power supply. The trocar is made up of different tines, also called electrodes. In this study, five different types of tines are investigated, which include single-tine, two-tine, three-tine, four-tine, and five-tine. The performance of each trocar on the degradation process is studied from a thermal point of view. The electrical potential and temperature distribution within the tissue are investigated according to different trocars. The results show that the use of five-tine has a better performance on tissue destruction. In contrast, the use of a single-tine can be used by the physician to better control the heat and glands small enough in the tissue. Besides, the heat and the destruction can be controlled by the operating voltage of the power supply. The temperature distribution inside the tissue is quasi-steady from the seventh minute onwards and no significant change is observed in the maximum temperature inside the tissue. The results show that the increase in temperature from 16 V to 18 V is equal to 11.76%