Three‐dimensional printing of orbital and peri‐orbital masses in three dogs and its potential applications in veterinary ophthalmology

Dorbandt, Daniel M.; Joslyn, Stephen; Hamor, Ralph E.

doi:10.1111/vop.12352

Cited by 18 publications

(19 citation statements)

References 30 publications

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“…10,11 Also, in the near future, models created by three-dimensional printing of such images may further improve understanding of the topography of orbital lesions. 18 In the authors' opinion, the method presented here offers far superior exposure for tumor removal as compared to conventional exenteration techniques (Figures 3 and 4). Also, it greatly improves exposure over that of the previously published trans frontal orbitotomy 8 (Figure 7), especially as it offers simultaneous access to both the globe and the orbit (Figures 2 and 3).…”

Section: Discussionmentioning

confidence: 77%

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A surgical approach for extensive orbital exenteration in dogs; a description of technique and its application in 4 cases

Berggren¹,

Håkansson²

2019

Veterinary Ophthalmology

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Objective To describe a surgical approach for preplanned orbital exenteration. Animals studied Indications included intraconal orbital mass lesions. Four dogs were included, 3 with neoplasia and one with retro bulbar nodular fasciitis. Procedure To facilitate complete removal of lesions, exenteration was performed by a new procedure for wide access. The frontalis and temporalis muscles were elevated and retracted through a single U‐shaped skin incision. Zygomatic arch osteotomy was performed, followed by a 360‐degree peritomy and zygomatic process osteotomy. The eyelids were divided from each other through the lateral cantus and then folded forward to expose the globe. The orbit was exenterated by blunt and sharp dissection. Osteotomies were closed with cerclage wires, soft tissues closed and the skin wound sutured in a T‐shape. Results The present exenteration procedure gave excellent access to remove orbital contents flush with the optic foramen and orbital fissure. Postoperative swelling and pain were limited and healing uneventful. Two of the 3 neoplasia cases experienced tumor recurrence involving the brain at 18 and 20 months postoperatively, respectively. Both of these had optic canal or intracranial tumor extension preoperatively. Long‐term complications included mild concavity of the operated side of the face. Conclusions The present approach for preplanned exenteration offers excellent access for complete removal of orbital contents to the level of the optic foramen. Complications due to the surgical method are few and limited.

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Section: Discussionmentioning

confidence: 77%

“…The present authors have found contrast CT studies useful to determine the interrelationships of large vessels and orbital lesions . Also, in the near future, models created by three‐dimensional printing of such images may further improve understanding of the topography of orbital lesions …”

Section: Discussionmentioning

confidence: 99%

A surgical approach for extensive orbital exenteration in dogs; a description of technique and its application in 4 cases

Berggren¹,

Håkansson²

2019

Veterinary Ophthalmology

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“…On the other hand, the reference population drew not only from surveys of canine orbital tumors but from case series Unspecified adenocarcinoma or carcinoma (23) [3][4][5]8,9,[13][14][15][16]21,34 Lobular orbital adenoma (15) 27 Nasal adenocarcinoma (9) 6,13,41 Lacrimal gland adenocarcinoma (8) 6,12,[44][45][46][47] Squamous cell carcinoma (6) 6,[12][13][14]51,52 Nasal carcinoma (5) 12,14 Nictitans gland adenocarcinoma (4) 4,6,8,47 Zygomatic salivary adenocarcinoma (3) 4,69,70 Unspecified salivary adenocarcinoma (2) 8,13 Nictitans gland adenoma (2) 48,75 Ameloblastoma (2) 78,79 Zygomatic salivary adenoma (1) 81 Unspecified salivary adenoma (1) 12 Lacrimal gland adenoma (1) 84 Unspecified adenoma (1) 14 Iridociliary adenocar...…”

Section: Discussionmentioning

confidence: 99%

Evaluation of cytology and histopathology for the diagnosis of canine orbital neoplasia: 112 cases (2004‐2019) and review of the literature

Flaherty

Robinson

Pizzirani

et al. 2019

Veterinary Ophthalmology

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Objective To provide an updated overview of canine orbital neoplasia, to compare diagnostic utility of cytology and histopathology, and to evaluate alternative sampling modalities, particularly image‐guided core needle biopsy. Procedures A medical records search was performed to identify dogs with orbital neoplasia. Data were collected regarding signalment, diagnosis, vision status, imaging modalities, and sample collection methods. A reference population with orbital neoplasia was also identified via literature search for comparison with regard to final diagnosis. Results One hundred and twelve dogs met selection criteria. In the study and reference populations, respectively, diagnoses were grouped as follows: mesenchymal tumors 40% and 35%, epithelial tumors 35% and 18%, tumors of neural origin 8% and 37%, and round cell 17% and 10%. The most common diagnoses in the study group were nasal adenocarcinoma, osteosarcoma, lymphoma, and meningioma. Cytology results were available for 47 dogs and histopathology results were available for 95 dogs. Both cytology and histopathology results were available for 30 dogs, in 53% of which results were discordant. Cytology samples were nondiagnostic or provided a diagnosis that was later overturned in 32% of cases in which they were obtained. Results from core needle biopsy samples were nondiagnostic or overturned by surgical biopsy results in only 13% of cases. No significant complications were associated with any sampling method. Conclusions Orbital neoplasia is common in dogs. Histopathology is superior to cytology in providing a definitive diagnosis. Image‐guided core needle biopsy appears to be a safe and effective means of obtaining samples.

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“…Three-dimensional technology has been used in veterinary medicine in the manufacture of implants and prostheses 13 , in medical clinics 14 , for diagnosis 15 , for surgical planning 16 , for reproduction and for teaching. The latter includes studies of anatomy 17 , clinical 18 , diagnostic imaging 19 , and surgery 20 . Despite its use in several educational areas, studies in the area of veterinary anesthesiology have not yet been reported.…”

Section: Introductionmentioning

confidence: 99%

3D anatomical model for teaching canine lumbosacral epidural anesthesia

et al. 2020

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To develop a 3D anatomical model for teaching canine epidural anesthesia (3DMEA) and to assess its efficacy for teaching and learning prior to the use of live animals. Methods: The creation of 3DMEA was based on 3D optical scanning and 3D printing of canine bone pieces of the fifth to the seventh lumbar vertebrae, sacrum and pelvis. A total of 20 male dogs were scheduled for castration. 20 veterinary students watched a video showing epidural anesthesia in dogs before the clinical attempt and were assigned to control or 3DMEA groups. Students in the 3DMEA group trained in the model after the video. For the clinical trial, the epidural procedure was performed by students under the veterinary supervision. When observed the absence of response to nociceptive stimuli, the epidural was considered successful. Then, all students answered a questionnaire evaluating the main difficulty founded in the technique and its degree of difficulty. Results: The 3DMEA group reported a lower degree of difficulty to perform the epidural anesthesia technique when compared with the control group (p=0.0037). The 3DMEA reproduced the anatomical structures, allowing the perception of the distance of needle in relation to the iliac prominences during epidural anesthesia. Its mobility allowed simulation of the animal in standing position and sternal recumbency. Conclusion: The use of 3DMEA demonstrated greater efficacy in the execution of the technique, being effective in the teaching and learning process before the epidural anesthesia in live animals.

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Three‐dimensional printing of orbital and peri‐orbital masses in three dogs and its potential applications in veterinary ophthalmology

Cited by 18 publications

References 30 publications

A surgical approach for extensive orbital exenteration in dogs; a description of technique and its application in 4 cases

A surgical approach for extensive orbital exenteration in dogs; a description of technique and its application in 4 cases

Evaluation of cytology and histopathology for the diagnosis of canine orbital neoplasia: 112 cases (2004‐2019) and review of the literature

3D anatomical model for teaching canine lumbosacral epidural anesthesia

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