Estudo anatomorfológico, radiográfico e tomográfico de Schistosomus reflexus em ovino da raça Dorper: relato de caso

Ferreira, Danilo Otávio Laurenti; Santarosa, Bianca Paola; Monteiro-Toma, C. D.; Belotta, Alexandra Frey; Chiacchio, Simone Biagio; Machado, Vânia Maria Vasconcelos; Gonçalves, Roberto Calderón; Prestes, Nereu Carlos

doi:10.1590/s0102-09352013000400022

Cited by 3 publications

(5 citation statements)

References 8 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ferreira et al [4] afirmaram que a TC mostrou--se superior à radiografia para o estudo anatomorfológico de um caso de Schistosomus reflexus em um ovino, pois permitiu a exclusão de alterações cranianas e encefálicas, possíveis anquiloses articulares e alterações na coluna cervical e lombar, além da minuciosa avaliação do esqueleto por meio das ferramentas de reconstrução e de contrastes disponíveis neste equipamento.…”

Section: Discussionunclassified

Congenital Cervical Vertebral Malformation in Lambs

Fonteque

Souza

Müller

et al. 2018

Acta Scientiae. Vet.

View full text Add to dashboard Cite

Background: The occurrence of congenital defects in the sheep is estimated to be between 0.2% and 2%. For congenital anatomical alterations, diagnostic imaging allows objective understanding and evaluation, and is a great aid in the formulation of clinical decisions. Most of these anomalies are diagnosed by radiography; but computed tomography (CT) can provide important additional information. In the current literature there are no descriptions of the use of radiography andCT for a more detailed evaluation of the anatomical structures in cases of congenital cervical malformations in lambs. The objective of this study is to report the clinical, radiographic and tomographic findings in two cases of congenital cervical vertebral malformation in lambs.Cases: Two lambs with cervical morphological alterations since birth were attended. A 4-month-old mixed-breed lamb, weighing 11 kg, with lateroventrocaudal deviation of the neck was observed to the right side, not yielding to the attempt of repositioning. The owner reported that these changes were identified since birth, leading to difficulties in suckling colostrum, necessitating artificial feeding. With the growth of the animal, worsening of the cervical deviation resulted in the impossibility of grazing. The radiographs of the cervical spine identified marked scoliosis, and the axis presented small dimensions and morphological changes with a slight loss of atlantoaxial articular relationship. Spondylopathies were detectedalong the cervical spine. Other lamb of the Lacaune breed, weighing 4.2 kg, was presented shortly after birth with changes in the shape and posture of the neck, difficult locomotion and in sternal decubitus. The owner reported that the lamb came from a twin eutocic birth, with the other lamb being apparently normal. The animal was unable to ingest the colostrum, in which the sheep was milked and colostrum was offered through a bottle. Lateroventrocaudal deviation of the neck to the left side did not yield to the repositioning attempt, the mandible also presented left lateral deviation. The radiographs of the cervical spine showed morphological changes in atlas, and it was not possible to delimit its wings; itwas also observed that the dorsal blade was parallel to the spinal process of the axis. The presence of a hypoattenuating linear left lateral image of the dorsal arch and a right ventro-lateral aspect of the atlas body was identified with slightly irregular and sclerotic margins, suggesting fracture lines. The body of the axis presented a conformational alteration withirregular contours and a large free fragment in the cranial aspect, suggestive of being the odontoid process, with rotation and deviation to the left in relation to the atlas. The right lateral cranial articular process of the third cervical vertebra (C3) presented a conformational change and important lateral rotation of the axis. Mild stenosis of the medullary canal was observed in the segment adjacent to C3. The euthanasia was recommended.Discussion: Congenital cervical malformations in sheep are rare in the literature and may lead to serious decrease in the quality of life of the animals. Computed tomography was superior to radiography in morphological evaluation in cases of congenital cervical malformations in sheep. However, both diagnostic methods were important to establish the best clinical behavior. The etiology of most congenital malformations is unknown, simply because of the complexity of the mechanismsthat lead to the formation of an abnormality. The isolated episodes of this anomaly, in the herd without previous alterations, suggest a non-infectious cause, probably similar among the cases, but not established. The information presented can be used to validate clinical reasoning in future cases similar to those described, where imaging features are not available.Keywords: anomalies, fetus, radiography, computed tomography.

show abstract

Section: Discussionunclassified

Congenital Cervical Vertebral Malformation in Lambs

Fonteque

Souza

Müller

et al. 2018

Acta Scientiae. Vet.

View full text Add to dashboard Cite

show abstract

“…SR is a congenital abnormality common in ruminants [1,2,5,6,11,13,14]. Although it was few reported in dogs [8,9] and cats [7,10].…”

Section: Discussionmentioning

confidence: 99%

“…Some authors affirm that this defect causes fetal dystocia on ruminants, because of the vertebral column abnormality, what promote passage difficult at born moment [1,2,5,11,14]. On the other hand, dogs did not present these kind of changes and dystocia was not related to this pathology on cases in dogs and cats [7][8][9][10], however most of these authors performed cesarean because the female did not get normal born.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Schistosomus reflexus in a Dog and a Cat

Bertolo

Conceição

Aguirra

et al. 2017

Acta Scientiae. Vet.

View full text Add to dashboard Cite

Background: Schistosomus reflexus (SR) is a congenital anomaly, that the animal presents exposed abdominal and thoracic organs. The alterations includes limbs malformation, abnormal spinal column, liver and diaphragm hypoplasia, genitourinary and gastrointestinal changes, on this way, the fetus can not survive. The aim of this study was to report the first SR case in dog and cat in Brazil, and describe anatomical, pathological and radiographic changes.Case: The puppy had ventral midline defect in the abdominal and thoracic wall extending from the sternum to the pubis with viscera exposition, including the heart, lung, liver, stomach, intestine, spleen, kidneys, moreover right army was abnormal, however no spinal column was present. It was performed radiography to evaluate bone abnormalities, and was diagnosed agenesis of carpal, metacarpal and phalange bones. The kitten had ventral midline defect measuring 4 x 2 cm, in the abdominal wall and exposition of liver, stomach, intestine and spleen, as well as tibiotarsal joint arthrogryposis on both lags. It was performed fetus radiography and no spinal column change was diagnosed.Discussion: Schistosomus reflexus is a congenital abnormality common in ruminants. Although it was few reported in dogs and cats. The two cases in this study are the firsts reposts in Brazil in these especies. In our case, the dog had exposition of abdominal and thoracic organs and died one hour after born, similar to this, another author reported a case where the thoracic and abdominal evisceration and the puppy died ten minutes after born. However, in another case with abdominal evisceration only, the puppy survived for eight days. Probably it happened because respiratore function was not compromised. The kitten had abdominal opening only, in turn, other authors reported a case whose abdominal viscera exposition was by pelvic fissure, and another case, what presented thoracic and abdominal evisceration, like our dog case. Some authors affirm that this defect causes fetal dystocia on ruminants, because of the vertebral column abnormality, what promote passage difficult at born moment. On the other hand, dogs did not present these kind of changes and dystocia was not related to this pathology on cases in dogs and cats, however most of these authors performed cesarean because the female did not get normal born. As well as, on two cases in kitten were reported vertebral column abnormalities, what can be related to dystocia. Even no animal of our study present any vertebral column abnormality, other bone changes were found, like carpal, metacarpal and phalange agenesis on army of the dog and tibiotarsal joint arthrogryposis on both lags of the cat fetus. The others report in dogs did not found vertebral column or bone changes, but in cats it was observed vertebral column abnormalities and other changes, like arthrogryposis on four limbs, skull flattening, mandibular brachignathism, reduced ossification of the cranial vault bones, palatoschisis and unfused eyelids. SR etiology is not clearly known, it may be related with genetic, mechanic, endocrine, metabolic, nutrition and infectious factors. The moment of embryonic development, where these factors influence the changes is related with abnormality grade. Although, Chromosomic abnormalities, like chromatid and chromosome breaks, non-homologous pairing of chromosomes was shown. In this study the bitch did not present any metabolic, endocrine or nutritional change, on other hand the queen was submitted to exogenous hormonal treatment to avoid pregnancy, what may be related to SR development. SR is a rare abnormality in dog and cat, fetus radiographic, anatomical and pathological findings confirmed to being this congenital defect, and this are the first reports in Brazil in these species.

show abstract

“…Schistosomus reflexus es considerado como una forma severa de hernia abdominal asociada con problemas esqueléticos que surgen en la vida embrionaria temprana cuando los bordes laterales del disco germinal se reflejan dorsalmente, en lugar de ventralmente, para formar las cavidades corporales (Dennis y Mayer 1965). En bovinos, se sospecha de un modo de herencia autosómico recesivo debido a los grupos de casos observados en la descendencia de ciertos toros (Citek, 2012;Ferreira et al, 2013). La causa de Schistosomus reflexus sigue siendo ambigua; sin embargo, se estima que los factores genéticos y la interacción de múltiples genes podrían influir en la aparición de tal defecto (Jana y Ghosh, 2001).…”

Section: Introductionunclassified

Schistosomus reflexus en un feto bovino en Colombia: Reporte de caso

Velásquez¹,

Peña²,

Parra³

2018

Rev. investig. vet. Perú

View full text Add to dashboard Cite

RESUMENSe reporta un caso de Schistosomus reflexus ocurrido en una ganadería en Maní, Casanare, Colombia. El motivo de consulta fue una vaca con distocia, a la cual se le realizó examen obstétrico por palpación transvaginal, reportándose una malformación del ternero con exposición de vísceras abdominales. Se procede a realizar una cesárea y se extrae una cría muerta con inversión espinal, cierre incompleto de la pared ventral abdominal, exposición de vísceras abdominales y artrogriposis, compatible con Schistosomus reflexus. Este es el primer caso reportado de esta deformidad en bovinos en Colombia. ABSTRACTA case of Schistosomus reflexus occurred in a cattle farm in Maní, Casanare, Colombia is reported. The reason for consultation was a cow with dystocia, who underwent obstetric examination by transvaginal palpation, reporting a malformation of the calf with exposure of abdominal viscera. A cesarean was performed and a dead calf with spinal inversion was extracted, the calf had incomplete closure of the abdominal ventral wall, exhibition of abdominal viscera and arthrogryposis, compatible with Schistosomus reflexus. This is the first reported case of this deformity in cattle in Colombia.

show abstract

Estudo anatomorfológico, radiográfico e tomográfico de Schistosomus reflexus em ovino da raça Dorper: relato de caso

Cited by 3 publications

References 8 publications

Congenital Cervical Vertebral Malformation in Lambs

Congenital Cervical Vertebral Malformation in Lambs

Schistosomus reflexus in a Dog and a Cat

Schistosomus reflexus en un feto bovino en Colombia: Reporte de caso

Contact Info

Product

Resources

About