The Experts below are selected from a list of 66 Experts worldwide ranked by ideXlab platform

Prudente, Ana Lúcia Da Costa - One of the best experts on this subject based on the ideXlab platform.

Fayez Shahatto - One of the best experts on this subject based on the ideXlab platform.

  • Levator Anguli Oris muscle based flaps for nasal reconstruction following resection of nasal skin tumours
    World Journal of Surgical Oncology, 2011
    Co-Authors: Adel Denewer, Omar Farouk, Tamer Fady, Fayez Shahatto
    Abstract:

    surgical excision remains the best tool for management of skin tumors affecting nasal skin, however many surgical techniques have been used for reconstruction of the nasal defects caused by excisional surgery. The aim of this work is the evaluation of the feasibility and outcome of Levator Anguli Oris muscle based flaps. Ninety patients of malignant nasal skin tumours were included in this study. Age was ranged from four to 78 years. For small unilateral defects affecting only one side ala nasi, Levator Anguli Oris myocautaneous (LAOMC) flap was used in 45 patients. For unilateral compound loss of skin and mucus membrane, Levator Anguli Oris myocautaneous mucosal (LAOMCM) flap was used in 23 patients. Very large defects; bilateral either LAOMC or LAOMCM flaps combined with forehead glabellar flaps were used to reconstruct the defect in 22 patients. Wound dehiscence was the commonest complication. Minor complications, in the form of haematoma and minor flap loss were managed conservatively. Partial flap loss was encountered in 6 patients with relatively larger tumours or diabetic co-morbidity, three of whom were required operative re-intervention in the form of debridement and flap refashioning, while total flap loss was not occurred at all. Immediate nasal reconstruction for nasal skin and mucosal tumours with Levator Anguli Oris muscle based flaps (LAOMC, LAOMCM) is feasible and spares the patient the psychic trauma due to organ loss.

  • Levator Anguli Oris muscle based flaps for nasal reconstruction following resection of nasal skin tumours
    World Journal of Surgical Oncology, 2011
    Co-Authors: Adel Denewer, Omar Farouk, Tamer Fady, Fayez Shahatto
    Abstract:

    Background surgical excision remains the best tool for management of skin tumors affecting nasal skin, however many surgical techniques have been used for reconstruction of the nasal defects caused by excisional surgery. The aim of this work is the evaluation of the feasibility and outcome of Levator Anguli Oris muscle based flaps. Methods Ninety patients of malignant nasal skin tumours were included in this study. Age was ranged from four to 78 years. For small unilateral defects affecting only one side ala nasi, Levator Anguli Oris myocautaneous (LAOMC) flap was used in 45 patients. For unilateral compound loss of skin and mucus membrane, Levator Anguli Oris myocautaneous mucosal (LAOMCM) flap was used in 23 patients. Very large defects; bilateral either LAOMC or LAOMCM flaps combined with forehead glabellar flaps were used to reconstruct the defect in 22 patients. Results Wound dehiscence was the commonest complication. Minor complications, in the form of haematoma and minor flap loss were managed conservatively. Partial flap loss was encountered in 6 patients with relatively larger tumours or diabetic co-morbidity, three of whom were required operative re-intervention in the form of debridement and flap refashioning, while total flap loss was not occurred at all. Conclusions Immediate nasal reconstruction for nasal skin and mucosal tumours with Levator Anguli Oris muscle based flaps (LAOMC, LAOMCM) is feasible and spares the patient the psychic trauma due to organ loss.

Leonardo De Oliveira - One of the best experts on this subject based on the ideXlab platform.

  • unusual labial glands in snakes of the genus geophis wagler 1830 serpentes dipsadinae
    Journal of Morphology, 2014
    Co-Authors: Leonardo De Oliveira, Ana Lucia Da Costa Prudente, Hussam Zaher
    Abstract:

    Geophis belongs to the goo-eating dipsadine assemblage of snakes that are known to feed exclusively on earthworms, snails, and slugs. Although the unusual feeding strategies of the goo-eating dipsadines are well known (but poorly documented), little attention has been paid to their internal anatomy. Here, we describe a new and noteworthy morphological and histochemical condition of the infralabial glands in three species of Geophis (G. brachycephalus, G. nasalis and G. semidoliatus), all earthworm feeders. Their infralabial glands are constituted of two distinct parts: an anterolateral portion composed of mucous and seromucous cells that stretches from the tip of the dentary to the corner of the mouth, and a tubular posteromedial portion that is exclusively seromucous. The anterolateral portion receives fibers of the Levator Anguli Oris muscle that attaches on its posterodorsal extremity while the posteromedial portion extends posteriorly to the corner of the mouth where it receives fibers of the adductor mandibulae externus medialis muscle. Furthermore, the posteromedial portion of the infralabial gland is constituted by large acini filled with secretion that is periodic acid-Schiff positive. These acini release their secretion directly into a large lumen located in the middle of the glandular portion. In the three species examined, the supralabial glands show a traditional configuration, being constituted of mucous and seromucous cells and retaining an enlarged part in its caudal region that resembles a Duvernoy's gland. The presence in Geophis of an expanded lumen in part of the infralabial gland that is compressed by an adjacent muscle suggests a more specialized role for the secretion produced by these glands that may not be related to envenomation but rather to prey transport and mucus control. J. Morphol. 275:87–99, 2014. © 2013 Wiley Periodicals, Inc.

  • Unusual labial glands in snakes of the genus Geophis Wagler, 1830 ( Serpentes: Dipsadinae)
    Wiley-Blackwell, 2014
    Co-Authors: Leonardo De Oliveira, Ana Lucia Da Costa Prudente, Zaher Hussam
    Abstract:

    Geophis belongs to the goo-eating dipsadine assemblage of snakes that are known to feed exclusively on earthworms, snails, and slugs. Although the unusual feeding strategies of the goo-eating dipsadines are well known (but poorly documented), little attention has been paid to their internal anatomy. Here, we describe a new and noteworthy morphological and histochemical condition of the infralabial glands in three species of Geophis (G. brachycephalus, G. nasalis and G. semidoliatus), all earthworm feeders. Their infralabial glands are constituted of two distinct parts: an anterolateral portion composed of mucous and seromucous cells that stretches from the tip of the dentary to the corner of the mouth, and a tubular posteromedial portion that is exclusively seromucous. The anterolateral portion receives fibers of the Levator Anguli Oris muscle that attaches on its posterodorsal extremity while the posteromedial portion extends posteriorly to the corner of the mouth where it receives fibers of the adductor mandibulae externus medialis muscle. Furthermore, the posteromedial portion of the infralabial gland is constituted by large acini filled with secretion that is periodic acid-Schiff positive. These acini release their secretion directly into a large lumen located in the middle of the glandular portion. In the three species examined, the supralabial glands show a traditional configuration, being constituted of mucous and seromucous cells and retaining an enlarged part in its caudal region that resembles a Duvernoy's gland. The presence in Geophis of an expanded lumen in part of the infralabial gland that is compressed by an adjacent muscle suggests a more specialized role for the secretion produced by these glands that may not be related to envenomation but rather to prey transport and mucus control. J. Morphol. 275:87-99, 2014. (c) 2013 Wiley Periodicals, Inc.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Ning B Yin - One of the best experts on this subject based on the ideXlab platform.

  • new insights into the three dimensional anatomy of the facial mimetic muscles related to the nasolabial fold an iodine staining technique based on nano computed tomography
    Aesthetic Plastic Surgery, 2020
    Co-Authors: Guo C Chen, Min Sun, Ning B Yin
    Abstract:

    Purpose This study aimed to introduce a novel approach to study the facial mimetic muscles (FMMs) in relation to the nasolabial fold (NLF) and realize the visualization of complex three-dimensional (3D) structures and spatial relationships of the FMMs. Materials and methods Nano-computed tomography (nano-CT) and iodine staining techniques were used to obtain the two-dimensional (2D) radiographs of the FMMs. Materialise Mimics software was then used to reconstruct the 3D model of the FMMs. Results The zygomaticus major muscle (ZMM) was divided into trunk fibers and branch fibers. The trunk fibers of the ZMM were subdivided into branch fibers layer-by-layer. Adipose tissue in the cheek was not a mass of unorganized fat. It was separated and fixed by branch fibers. Moreover, the trunk fibers of the ZMM were directly connected to the Levator Anguli Oris (LAO), not the skin. On the contrary, the ZMM was connected to the skin by its subdivided branch fibers indirectly. The muscle fibers in the modiolus were organized, rather than disorganized. In other words, the terminal of the trunk fibers of the ZMM was located in the LAO. Moreover, the terminal of the trunk fibers of the LAO was located at the terminal of the trunk fibers of the musculus depressor Anguli Oris at the corner of the mouth. Furthermore, the Levator labii superiOris alaeque nasi was not directly connected to the orbicularis Oris muscle. It was connected to the combination of the LLS and the rhinaeus. Conclusions Although nano-CT has many disadvantages, it enabled the 3D anatomical study of the FMMs in relation to the NLF when combined with iodine staining. We imported the 2D images obtained by nano-CT scanning into the Mimics software, successfully reconstructed the FMMs, and finally obtained images of complex 3D structures of the FMMs. The shapes, positions, and 3D spatial relationships of the FMMs were clearly visualized. The novel insights into the 3D anatomy of the FMMs may help understand the formation of the NLF. Finally, the results of this study may help improve the rejuvenation surgery of the NLF soon. Level of evidence iv This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.

  • new insights into the three dimensional anatomy of the facial mimetic muscles related to the nasolabial fold an iodine staining technique based on nano computed tomography
    Aesthetic Plastic Surgery, 2020
    Co-Authors: Guo C Chen, Min Sun, Ning B Yin
    Abstract:

    This study aimed to introduce a novel approach to study the facial mimetic muscles (FMMs) in relation to the nasolabial fold (NLF) and realize the visualization of complex three-dimensional (3D) structures and spatial relationships of the FMMs. Nano-computed tomography (nano-CT) and iodine staining techniques were used to obtain the two-dimensional (2D) radiographs of the FMMs. Materialise Mimics software was then used to reconstruct the 3D model of the FMMs. The zygomaticus major muscle (ZMM) was divided into trunk fibers and branch fibers. The trunk fibers of the ZMM were subdivided into branch fibers layer-by-layer. Adipose tissue in the cheek was not a mass of unorganized fat. It was separated and fixed by branch fibers. Moreover, the trunk fibers of the ZMM were directly connected to the Levator Anguli Oris (LAO), not the skin. On the contrary, the ZMM was connected to the skin by its subdivided branch fibers indirectly. The muscle fibers in the modiolus were organized, rather than disorganized. In other words, the terminal of the trunk fibers of the ZMM was located in the LAO. Moreover, the terminal of the trunk fibers of the LAO was located at the terminal of the trunk fibers of the musculus depressor Anguli Oris at the corner of the mouth. Furthermore, the Levator labii superiOris alaeque nasi was not directly connected to the orbicularis Oris muscle. It was connected to the combination of the LLS and the rhinaeus. Although nano-CT has many disadvantages, it enabled the 3D anatomical study of the FMMs in relation to the NLF when combined with iodine staining. We imported the 2D images obtained by nano-CT scanning into the Mimics software, successfully reconstructed the FMMs, and finally obtained images of complex 3D structures of the FMMs. The shapes, positions, and 3D spatial relationships of the FMMs were clearly visualized. The novel insights into the 3D anatomy of the FMMs may help understand the formation of the NLF. Finally, the results of this study may help improve the rejuvenation surgery of the NLF soon. This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.

Ana Caroline De ,lima - One of the best experts on this subject based on the ideXlab platform.