Enxerto cutâneo em semeadura associado à malha não aderente em membro pélvico de um cão / Island skin graft associated with non-adherent mesh in a dog's pelvic limb

Background: Large skin defects are caused by tumor excision, making appropriate reconstruction and complete healingof the lesion a challenge for surgeons. There are some difficulties in reaching these goals, especially in cases of surgicalwound in the limbs, due to the scarce amount of skin and its reduced elasticity, which limit the possibility of flaps whencompared to the head, neck, and trunk. This study reports a case of wound closure on the lateral skin in the femoral regionof a dog’s pelvic limb via island skin graft associated with the implantation of a non-adherent cellulose acetate mesh andintensive postoperative care.Case: An 8-year-old Rottweiler female dog was attended at Pontifical Catholic University of Paraná’s Veterinary Clinic(CVE) in Curitiba, Paraná, presenting a tumor located laterocaudally to the right stifle joint. After preoperative examinations the patient underwent tumor surgery; however, two more surgical procedures were required due to suture dehiscence in the region, which resulted in increased wound size. At first, the wound was treated for granulation tissue to beformed. Subsequently, the island skin grafting technique was chosen to close the wound, associated with the implantationof a non-adherent cellulose acetate mesh imbibed with petrolatum emulsion to keep the grafted fragments in place. Themesh was fixed in a simple interrupted suture pattern using 2-0 nylon thread. The lateral regions of the chest and abdomen were chosen as donor skin beds due to their large dimensions, skin elasticity, and ease in defect reconstruction. Thefragments were obtained using a 10-mm biopsy punch and scalpel, and the defects were sutured in a simple interruptedpattern using 2-0 nylon thread. The patient remained hospitalized for movement restriction and postoperative monitoringfor 72 h, and the bandage remained untouched during this time interval. Thereafter, the patient...

Enxerto cutâneo em semeadura associado à malha não aderente em membro pélvico de um cão / Island skin graft associated with non-adherent mesh in a dog's pelvic limb

Background: Large skin defects are caused by tumor excision, making appropriate reconstruction and complete healingof the lesion a challenge for surgeons. There are some difficulties in reaching these goals, especially in cases of surgicalwound in the limbs, due to the scarce amount of skin and its reduced elasticity, which limit the possibility of flaps whencompared to the head, neck, and trunk. This study reports a case of wound closure on the lateral skin in the femoral regionof a dogs pelvic limb via island skin graft associated with the implantation of a non-adherent cellulose acetate mesh andintensive postoperative care.Case: An 8-year-old Rottweiler female dog was attended at Pontifical Catholic University of Paranás Veterinary Clinic(CVE) in Curitiba, Paraná, presenting a tumor located laterocaudally to the right stifle joint. After preoperative examinations the patient underwent tumor surgery; however, two more surgical procedures were required due to suture dehiscence in the region, which resulted in increased wound size. At first, the wound was treated for granulation tissue to beformed. Subsequently, the island skin grafting technique was chosen to close the wound, associated with the implantationof a non-adherent cellulose acetate mesh imbibed with petrolatum emulsion to keep the grafted fragments in place. Themesh was fixed in a simple interrupted suture pattern using 2-0 nylon thread. The lateral regions of the chest and abdomen were chosen as donor skin beds due to their large dimensions, skin elasticity, and ease in defect reconstruction. Thefragments were obtained using a 10-mm biopsy punch and scalpel, and the defects were sutured in a simple interruptedpattern using 2-0 nylon thread. The patient remained hospitalized for movement restriction and postoperative monitoringfor 72 h, and the bandage remained untouched during this time interval. Thereafter, the patient...(AU)

Retalho de padrão subdérmico tubular em membro torácico de cão: relato de caso / Subdermal pattern tubular flapin member dog thoracic: case report / Colgajo en patrón subdérmico tubular en miembro torácico canino: reporte de caso

A pele é um órgão complexo com alto índice de renovação celular, é constituída por vários tipos de células (epiteliais, mesenquimais, redondas e melanocíticas). As neoplasias cutâneas representam um elevado índice de atendimento clínico-cirúrgico em cães e gatos, provavelmente por sua estrutura complexa e sua constante exposição ao meio ambiente. A cirurgia plástica reparadora proporciona diversas opções para a síntese de feridas após exéreses tumorais, dentre elas o retalho tubular. Objetiva-se neste trabalho relatar a utilização do retalho de padrão subdérmico tubular para síntese de defeito criado em região crânio-medial radial após exérese de um tumor com o diagnóstico de carcinoma de células escamosas em um cão.

The skin is a complex organ with a high rate of cell renewal. It consists of several types of cells (epithelial, mesenchymal, round and melanocytic). Skin cancer represents a high rate of clinical and surgical care in dogs and cats, probably because of its complex structure and its constant exposure to the environment. Repairing plastic surgery offers several options for the synthesis of lesions after tumoral excisions, among them the tubular flap. The objective of this work is to report the use of the tubular subdermal flap for defect synthesis created in the radial craniomedial region after excision of a tumor with the diagnosis of cutaneous squamous cell carcinoma.

La piel es un órgano complejo, con alto índice de renovación celular y constituida por varios tipos celulares (epiteliales, mesenquimales, redondas y melanocíticas). Las neoplasias cutáneas representan gran parte de la casuística clínica y quirúrgica en perros y gatos, probablemente debido a su estructura compleja y constante exposición al medio ambiente. La cirugía plástica de reparación proporciona opciones diversas para el cierre de heridas quirúrgicas posteriores a exégesis tumorales, entre las que puede ser citado el colgajo tubular. El objetivo de este trabajo es reportar el uso de colgajo en patrón subdérmico tubular para la síntesis de un detecto creado en la región cráneo-medial del brazo con la extirpación de un carcinoma de células escamosas canino.

Células-Tronco na cirurgia reconstrutiva: revisão de literatura / Stem cells in reconstructive surgery: review of literature / Las células madre en cirugía reconstructiva: revisión de la literatura

As células-tronco mesenquimais (MSCs) são excelente alternativa para estimular a cicatrização de feridas agudas e crônicas, mediante uma variedade de funções incluindo suporte trófico, anti-inflamatória,imunomoduladora, revascularização, atividade antiapoptótica, capacidade de diferenciação e quimiotaxia. Assim,as cirurgias reconstrutivas são utilizadas para corrigir defeitos extensos, promovendo melhor resultados estéticos e proporcionando que o paciente retorne com maior rapidez a rotina normal. Uma das modalidades da cirurgia reconstrutiva são os enxertos cutâneos, os quais consistem de um segmento de pele separado por completo da área doadora, além disso são desprovidos de pedículo vascular, implicando em complicações pós-cirúrgicas como isquemia e necrose. Sendo assim, o uso de substâncias que estimulam a angiogênese e favoreçam a cicatrização são alvo de muitos estudos, como no caso das células-troncos. Dessa forma, objetivou-se com esse estudo realizar uma revisão de literatura sobre as células-tronco associadas aos enxertos cutâneos, a fim de avaliar seus efeitos na cicatrização.(AU)

Mesenchymal stem cells (MSCs) are an excellent alternative to stimulate the healing of acute and chronic wounds, acting through a variety of functions including trophic support, anti-inflammatory,immunomodulatory, revascularization, antiapoptotic activity, differentiation capacity and chemotaxis. Like this,reconstructive surgeries are used to correct extensive defects, promoting better aesthetic results and allowing the patient to return to normal routine more quickly. One of the modalities of reconstructive surgery are the cutaneous grafts, which involve a segment of skin completely separated from the donor area, besides they lack of vascular pedicle, resulting in postoperative complications such as ischemia and necrosis. Therefore, the use of substances that stimulate angiogenesis and promote wound healing are the target of many studies, as in the case of stem cells. Thus, this study aimed to review the literature on stem cells associated with cutaneous grafts,in order to evaluate their effects on wound healing.(AU)

Las células madre mesenquimales (MSCs) constituyen una excelente alternativa para estimular la cicatrización de heridas agudas y crónicas, mediante vários tipos de funciones tales como soporte trófico,antiinflamatório, inmunomodulación, neovascularización, actividad antiapoptosis, capacidad de diferenciación y quimiotaxis. Mientras que, las cirugías reconstructivas son utilizadas para corregir defectos extensos,proporcionando mejores resultados estéticos y permitiendo que el paciente retorne más rápido a la rutina normal.Uno de los métodos de cirugía recosntructiva son los injertos de piel, consisten en un segmento de piel separada por completo de la zona donante y desprovistos de pedículo vascular, reultando en complicaciones posquirúrgicas tales como isquemia y necrosis. Por lo tanto, el uso de substancias que estimulan la angiogénesis y cicatrización de heridas, tales como las células madre, son objeto de numerosos estúdios. Por esta razón, el objetivo de este trabajo es realizar una revisión de literatura sobre las células madres e injertos cutâneos, con el propósito de evaluar los efectos en la cicatrización.(AU)

Células-Tronco na cirurgia reconstrutiva: revisão de literatura / Stem cells in reconstructive surgery: review of literature / Las células madre en cirugía reconstructiva: revisión de la literatura

As células-tronco mesenquimais (MSCs) são excelente alternativa para estimular a cicatrização de feridas agudas e crônicas, mediante uma variedade de funções incluindo suporte trófico, anti-inflamatória,imunomoduladora, revascularização, atividade antiapoptótica, capacidade de diferenciação e quimiotaxia. Assim,as cirurgias reconstrutivas são utilizadas para corrigir defeitos extensos, promovendo melhor resultados estéticos e proporcionando que o paciente retorne com maior rapidez a rotina normal. Uma das modalidades da cirurgia reconstrutiva são os enxertos cutâneos, os quais consistem de um segmento de pele separado por completo da área doadora, além disso são desprovidos de pedículo vascular, implicando em complicações pós-cirúrgicas como isquemia e necrose. Sendo assim, o uso de substâncias que estimulam a angiogênese e favoreçam a cicatrização são alvo de muitos estudos, como no caso das células-troncos. Dessa forma, objetivou-se com esse estudo realizar uma revisão de literatura sobre as células-tronco associadas aos enxertos cutâneos, a fim de avaliar seus efeitos na cicatrização.

Mesenchymal stem cells (MSCs) are an excellent alternative to stimulate the healing of acute and chronic wounds, acting through a variety of functions including trophic support, anti-inflammatory,immunomodulatory, revascularization, antiapoptotic activity, differentiation capacity and chemotaxis. Like this,reconstructive surgeries are used to correct extensive defects, promoting better aesthetic results and allowing the patient to return to normal routine more quickly. One of the modalities of reconstructive surgery are the cutaneous grafts, which involve a segment of skin completely separated from the donor area, besides they lack of vascular pedicle, resulting in postoperative complications such as ischemia and necrosis. Therefore, the use of substances that stimulate angiogenesis and promote wound healing are the target of many studies, as in the case of stem cells. Thus, this study aimed to review the literature on stem cells associated with cutaneous grafts,in order to evaluate their effects on wound healing.

Las células madre mesenquimales (MSCs) constituyen una excelente alternativa para estimular la cicatrización de heridas agudas y crónicas, mediante vários tipos de funciones tales como soporte trófico,antiinflamatório, inmunomodulación, neovascularización, actividad antiapoptosis, capacidad de diferenciación y quimiotaxis. Mientras que, las cirugías reconstructivas son utilizadas para corregir defectos extensos,proporcionando mejores resultados estéticos y permitiendo que el paciente retorne más rápido a la rutina normal.Uno de los métodos de cirugía recosntructiva son los injertos de piel, consisten en un segmento de piel separada por completo de la zona donante y desprovistos de pedículo vascular, reultando en complicaciones posquirúrgicas tales como isquemia y necrosis. Por lo tanto, el uso de substancias que estimulan la angiogénesis y cicatrización de heridas, tales como las células madre, son objeto de numerosos estúdios. Por esta razón, el objetivo de este trabajo es realizar una revisión de literatura sobre las células madres e injertos cutâneos, con el propósito de evaluar los efectos en la cicatrización.