Benign neurogenic tumors of the oral cavity

Rare occurrence of intraosseous schwannoma in a young child, its review and its pathogenesis

“…It is a rare, benign neural tumor arising from the neural sheath Schwann cells of the peripheral, cranial, or autonomic nerves. [1314] It can also arise from any nerve covered with a Schwann cell sheath, which include the cranial nerves (except for the optic and olfactory), the spinal nerves and the autonomic nervous system. [14] The origin of the Schwann cell has also long been debated.…”

“…[1314] It can also arise from any nerve covered with a Schwann cell sheath, which include the cranial nerves (except for the optic and olfactory), the spinal nerves and the autonomic nervous system. [14] The origin of the Schwann cell has also long been debated. Some say that they arise directly from the neural tube whereas others insist their origin from the neural crest, (a group of cells that lie lateral to the neural tube and beneath the ectoderm of the developing embryo).…”

“…[15] Approximately 25% of the reported cases originate from the head and neck region. [14] Of these, approximately 1–12% occur intraorally. The intrabony lesion accounts for less than 1% of the central neoplasms.…”

“…[14] This histological picture is dominated by an encapsulated lesion arising from a nerve end composed of an intimate mixture of spindle cells forming highly cellular Antoni A and less cellular, myoxid Antoni B areas. [4] Histopathologically, five schwannoma variants have been described: Common, plexiform, cellular, epithelioid, and ancient schwannomas.…”

Schwannome de la langue : à propos d’un cas et revue de la littérature

“…Le schwannome bénin pose le problème diagnostique avec les autres tumeurs nerveuses, en particulier avec les névromes, constitués par une prolifération d'axones et de cellules de Schwann induite le plus souvent par un traumatisme local, comme par exemple, lors d'une intervention de Caldwell Luc. Mais aussi avec les tumeurs à cellules granuleuses d'Abrikossof, les gliomes, les neurothécomes, les méningiomes extracrâniens, les chondromes, les tumeurs neuroectodermiques mélanotiques [10] . En dehors des tumeurs nerveuses, le diagnostic différentiel se pose avec les lipomes, les léiomyomes, les hémangiomes, les lymphangiomes, et les tumeurs bénignes ou malignes des glandes salivaires.…”