Primary intracranial squamous cell carcinoma represents a rare entity. However, few cases have been reported in the literature so far. We report the case of a 32-year-old male who presented with a history of severe headache and vertigo for 3 weeks. Magnetic resonance imaging brain with contrast was done that showed a lesion measuring 5 cm × 4.8 cm in the left cerebellum near the midline which was hyperintense on T2 and hypointense on T1. It also showed ring-like heterogeneous contrast enhancement causing midline shift as well as pressure over the brainstem causing severe obstructive hydrocephalus. After emergency ventriculoperitoneal shunt placement, the patient subsequently underwent left paramedian suboccipital craniotomy and excision of space-occupying lesion. Intraoperatively, a well-demarcated capsule was identified. The entire lesion consisting of areas of calcification and hair particles was removed except the part of capsule which was adherent to the brainstem. Histopathology of the lesion showed infiltrating malignant neoplasm exhibiting papillary architecture with thick fibrovascular cores lined by stratified squamous cells. In order to rule out the possibility of metastases, systemic workup was done which yielded negative results.

This research explores the application of self-supervised learning techniques for obstacle detection and collision avoidance during UAS auto-taxi. Autoencoders were used to detect obstacles as anomalies by comparison of reconstruction errors. RGB cameras and millimetre wave radars covering conflict free zones (CFZs) around the own-ship were chosen to provide inputs to autoencoders. Results demonstrated that autoencoders were able to detect obstacles as anomalies within the CFZs but with certain limitations at lay the foundations of further work and investigation within the research area.

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Background: Mature intracranial teratoma in the pediatric population is a rare entity. They are sometimes associated with genetic syndromes but complete surgical excision is associated with good outcome and prognosis. Case Presentation:A 3 months old baby girl presented in the clinic with left eye proptosis, MRI brain showed temporal and retro-orbital multiple cystic lesions, which were excised and biopsy showed mature teratoma. The patient was discharged and followed in the clinic. Conclusion:This case underlies that mature brain teratoma may present at an early age even at birth. They are rare intracranial tumors and may be associated with other genetic syndromes. A high index of suspicion should be present when coming across such complex lesions in neonates. Although the overall outcome of these tumors is generally poor, among the children that survive, complete microsurgical excision of the tumor is associated with good outcome and prognosis. In cases of mature teratomas, we advocate that complete removal should be carried out. In cases of the residual disease, reoperation is indicated to achieve good results.