The Experts below are selected from a list of 24 Experts worldwide ranked by ideXlab platform
Pinsky Tali - One of the best experts on this subject based on the ideXlab platform.
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Tunnel number one Knots satisfy the Berge Conjecture
2019Co-Authors: Li Tao, Moriah Yoav, Pinsky TaliAbstract:Let $K$ be a tunnel number one Knot in $M$, where $M$ is either $S^3$, $S^2\times S^1$, or a connected sum of $S^2\times S^1$ with a lens space. We prove that if a Dehn surgery on $K$ yields a lens space, then $K$ is a doubly Primitive Knot in $M$. For $M = S^3$ this resolves the tunnel number one Berge Conjecture. For $M = S^2\times S^1$ this resolves a conjecture of Greene and Baker-Buck-Lecuona for tunnel number one Knots.Comment: 65 pages, 31 figures. We fix the gap in the previous version, and obtain a much stronger resul
Tali Pinsky - One of the best experts on this subject based on the ideXlab platform.
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Tunnel number one Knots satisfy the Berge Conjecture.
arXiv: Geometric Topology, 2017Co-Authors: Yoav Moriah, Tali PinskyAbstract:Let $K$ be a tunnel number one Knot in $M$, where $M$ is either $S^3$, $S^2\times S^1$, or a connected sum of $S^2\times S^1$ with a lens space. We prove that if a Dehn surgery on $K$ yields a lens space, then $K$ is a doubly Primitive Knot in $M$. For $M = S^3$ this resolves the tunnel number one Berge Conjecture. For $M = S^2\times S^1$ this resolves a conjecture of Greene and Baker-Buck-Lecuona for tunnel number one Knots.
A. Méndez Viveros - One of the best experts on this subject based on the ideXlab platform.
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A special case of intramedullary teratoma in an adult. Literature review
Revista Médica del Hospital General de México, 2018Co-Authors: E. Ariñez Barahona, J.l. Navarro Olvera, M.a. Esqueda Liquidano, A. Muñoz Cobos, K.e. González Echeverria, A.d. Rivera Arroyo, E. Gomez Apo, R.s. Torres Durán, A. Méndez ViverosAbstract:Abstract Spinal teratomas that occur in adulthood are rare. The most accepted theory is that of a disembryogenic origin, but in this case we present the theory of misplaced germ cells. We present a 54-year-old male with saddle hypoesthesia, 3/5 paraesthesia of the lower extremities, urinary incontinence, loss of anal sphincter tone, and patellar and achilles hyporeflexia, of 10 months’ evolution. The MRI showed a heterogeneous, cystic and solid intramedullary lesion with defined edges. Laminoplasty surgery of L2 to L4 and complete resection of the lesion was performed. The histopathological study found a mature teratoma. The incidence of intraspinal teratomas is very low. There are two theories: the disembryogenic theory (most accepted) and the misplaced germ cell theory (our case). This pathogenesis of teratoma formation involves a niche of pluripotent cells from the Primitive Knot or a caudal cell mass that may precede the formation of a dysraphism. In this modified theory, teratoma growth sometimes causes disruption of the development field and dysraphism.
Méndez A. Viveros - One of the best experts on this subject based on the ideXlab platform.
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A special case of intramedullary teratoma in an adult. Literature review
Elsevier, 2018Co-Authors: Ariñez E. Barahona, J.l. Navarro Olvera, M.a. Esqueda Liquidano, K.e. González Echeverria, A.d. Rivera Arroyo, R.s. Torres Durán, Muñoz A. Cobos, Gómez E. Apo, Méndez A. ViverosAbstract:Spinal teratomas that occur in adulthood are rare. The most accepted theory is that of a disembryogenic origin, but in this case we present the theory of misplaced germ cells.We present a 54-year-old male with saddle hypoesthesia, 3/5 paraesthesia of the lower extremities, urinary incontinence, loss of anal sphincter tone, and patellar and achilles hyporeflexia, of 10 months’ evolution. The MRI showed a heterogeneous, cystic and solid intramedullary lesion with defined edges. Laminoplasty surgery of L2 to L4 and complete resection of the lesion was performed. The histopathological study found a mature teratoma.The incidence of intraspinal teratomas is very low. There are two theories: the disembryogenic theory (most accepted) and the misplaced germ cell theory (our case). This pathogenesis of teratoma formation involves a niche of pluripotent cells from the Primitive Knot or a caudal cell mass that may precede the formation of a dysraphism. In this modified theory, teratoma growth sometimes causes disruption of the development field and dysraphism. Resumen: Los teratomas espinales, son raros que se presenten en edad adulta. La teoría más aceptada es disembriogénica, pero en este caso exponemos la teoría de células germinales del fuera de lugar.Presentamos un masculino de 54 años, de 10 meses de evolución con hipoestesia en silla de montar, parestesia miembros pélvicos 3/5, incontinencia urinaria, tono de esfínter anal ausente, hiporeflexia patelar y aquilea. RMN lumbar muestra lesión tumoral heterogénea intramedular, quística y solida, bordes definidos. Se realiza cirugía de laminoplastia de L2-L4 y resección total de lesión tumoral, con resultado del estudio histopatológico de Teratoma maduro. La incidencia de teratomas intraespinales es muy baja. Existen 2 teorías: teoría disembiogénica (más aceptada) y teoría de células germinales fuera de lugar (nuestro caso). Esta patogénesis de formación de teratoma tiene nicho de células pluripotentes a partir de nodos de Hensen o masa celular caudal que puede preceder a la formación de disrafismo. Esta teoría modificada, del crecimiento de teratoma a veces causa interrupción del campo del desarrollo y disrafismo. Keywords: Teratoma, Spinal tumour, Mollaret's meningitis, Aseptic meningitis, Intradural, Misplaced germ cell theory, Palabras clave: Teratoma, Tumour espinal, Meningitis Mollaret, Meningitis aséptica, Intradural, Teoría de las células germinales fuera de luga
M.a. Esqueda Liquidano - One of the best experts on this subject based on the ideXlab platform.
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A special case of intramedullary teratoma in an adult. Literature review
Revista Médica del Hospital General de México, 2018Co-Authors: E. Ariñez Barahona, J.l. Navarro Olvera, M.a. Esqueda Liquidano, A. Muñoz Cobos, K.e. González Echeverria, A.d. Rivera Arroyo, E. Gomez Apo, R.s. Torres Durán, A. Méndez ViverosAbstract:Abstract Spinal teratomas that occur in adulthood are rare. The most accepted theory is that of a disembryogenic origin, but in this case we present the theory of misplaced germ cells. We present a 54-year-old male with saddle hypoesthesia, 3/5 paraesthesia of the lower extremities, urinary incontinence, loss of anal sphincter tone, and patellar and achilles hyporeflexia, of 10 months’ evolution. The MRI showed a heterogeneous, cystic and solid intramedullary lesion with defined edges. Laminoplasty surgery of L2 to L4 and complete resection of the lesion was performed. The histopathological study found a mature teratoma. The incidence of intraspinal teratomas is very low. There are two theories: the disembryogenic theory (most accepted) and the misplaced germ cell theory (our case). This pathogenesis of teratoma formation involves a niche of pluripotent cells from the Primitive Knot or a caudal cell mass that may precede the formation of a dysraphism. In this modified theory, teratoma growth sometimes causes disruption of the development field and dysraphism.
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A special case of intramedullary teratoma in an adult. Literature review
Elsevier, 2018Co-Authors: Ariñez E. Barahona, J.l. Navarro Olvera, M.a. Esqueda Liquidano, K.e. González Echeverria, A.d. Rivera Arroyo, R.s. Torres Durán, Muñoz A. Cobos, Gómez E. Apo, Méndez A. ViverosAbstract:Spinal teratomas that occur in adulthood are rare. The most accepted theory is that of a disembryogenic origin, but in this case we present the theory of misplaced germ cells.We present a 54-year-old male with saddle hypoesthesia, 3/5 paraesthesia of the lower extremities, urinary incontinence, loss of anal sphincter tone, and patellar and achilles hyporeflexia, of 10 months’ evolution. The MRI showed a heterogeneous, cystic and solid intramedullary lesion with defined edges. Laminoplasty surgery of L2 to L4 and complete resection of the lesion was performed. The histopathological study found a mature teratoma.The incidence of intraspinal teratomas is very low. There are two theories: the disembryogenic theory (most accepted) and the misplaced germ cell theory (our case). This pathogenesis of teratoma formation involves a niche of pluripotent cells from the Primitive Knot or a caudal cell mass that may precede the formation of a dysraphism. In this modified theory, teratoma growth sometimes causes disruption of the development field and dysraphism. Resumen: Los teratomas espinales, son raros que se presenten en edad adulta. La teoría más aceptada es disembriogénica, pero en este caso exponemos la teoría de células germinales del fuera de lugar.Presentamos un masculino de 54 años, de 10 meses de evolución con hipoestesia en silla de montar, parestesia miembros pélvicos 3/5, incontinencia urinaria, tono de esfínter anal ausente, hiporeflexia patelar y aquilea. RMN lumbar muestra lesión tumoral heterogénea intramedular, quística y solida, bordes definidos. Se realiza cirugía de laminoplastia de L2-L4 y resección total de lesión tumoral, con resultado del estudio histopatológico de Teratoma maduro. La incidencia de teratomas intraespinales es muy baja. Existen 2 teorías: teoría disembiogénica (más aceptada) y teoría de células germinales fuera de lugar (nuestro caso). Esta patogénesis de formación de teratoma tiene nicho de células pluripotentes a partir de nodos de Hensen o masa celular caudal que puede preceder a la formación de disrafismo. Esta teoría modificada, del crecimiento de teratoma a veces causa interrupción del campo del desarrollo y disrafismo. Keywords: Teratoma, Spinal tumour, Mollaret's meningitis, Aseptic meningitis, Intradural, Misplaced germ cell theory, Palabras clave: Teratoma, Tumour espinal, Meningitis Mollaret, Meningitis aséptica, Intradural, Teoría de las células germinales fuera de luga