Schwannoma, also known as neurilemmoma, is a slowly growing benign neurogenic tumor, originating from the Schwann cells of nerve sheath. Schwannoma can arise various nerves such cranial nerves, spinal autonomic and most common in head neck area. However, lingual very rare clinical findings are non-specific. Therefore, when it occurs submandibular space, difficult to differentiate them other tum...

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CASE REPORT A 46-year-old woman, who presented with right visual acuity loss, was found to have papilledema, and subsequently shown to have ventricular dilatation in a cerebral Magnetic Resonance Imaging (MRI) assessment. Elevated protein levels were found in the cerebrospinal fluid. Spinal MRI revealed the presence of a spinal cord neoplasm. After surgical removal of the tumor, which turned ou...

Rockfish (Sebastes spp.) are a common marine fish in nearshore and continental shelf environments in the North Pacific Ocean. They are frequently identified in coastal archaeological sites in western North America; however, the morphological similarity of rockfish species limits conventional zooarchaeological identifications to the genus level. This study applies ancient DNA analysis to 96 arch...

All rings are commutative with identity and all modules are unitary. In this note we give some properties of a finite collection of submodules such that the sum of any two distinct members is multiplication, generalizing those which characterize arithmetical rings. Using these properties we are able to give a concise proof of Patrick Smith’s theorem stating conditions ensuring that the sum and ...