共查询到20条相似文献，搜索用时 31 毫秒
1.
A 5-day-old Angus x Hereford calf presented for bilateral haired masses on the eyes and nasolabial planum since birth. The masses were surgically excised from the inferonasal cornea and bulbar conjunctiva of both eyes and the left and right side of the dorsomedial nasolabial planum. Histopathology of the excised tissue confirmed bilateral corneoconjunctival dermoids with ectopic lacrimal glands, and bilateral nasal choristomas and ectopic nasal glandular tissue. Surgery was curative and healing was uneventful. Bilateral ocular dermoids in combination with nasal choristomas and ectopic glandular tissue have not been documented previously in cattle. 相似文献
2.
CLAUDIA NÖLLER WOLFGANG HENNINGER DIETRICH H. W. GRÖNEMEYER RUTH M. HIRSCHBERG KLAUS D. BUDRAS 《Veterinary radiology & ultrasound》2006,47(1):53-60
Computed tomography (CT) of the nasolacrimal drainage system with and without contrast medium (barium sulfate) was used to create an anatomic basis for clinical evaluation in domestic cats. To evaluate and compare the anatomical findings, three casts were carried out and were followed by CT examinations. These CT series were also used for a three-dimensional (3D) reconstruction of the nasolacrimal drainage system within surrounding structures. In noncontrast CT images, osseous structures limiting the nasolacrimal drainage system are easily recognizable. In most cats, this allows the identification of the nasolacrimal drainage system even without contrast enhancement. A distal part of the lacrimal sac adjoins directly to the respiratory mucosa of the nasal cavity without an osseous protection. Thus, this may represent a predilection site for infiltration of adjacent pathologic processes from the nasal cavity onto the lacrimal sac. The nasolacrimal duct begins on level with the maxillary third premolar tooth. The apex of the root of the canine tooth is situated very close to the nasolacrimal duct. This close topographic relation may lead to problems with the nasolacrimal drainage system. In domestic cats the nasolacrimal drainage system consists of a descending and a horizontal part, which form an angle of approximately 90 degrees for unhindered drainage of the lacrimal fluid. 相似文献
3.
. Eerdunchaolu K. Takehana A. Kobayashi . Baiyin G. -F. Cao A. Andrén K. Iwasa M. Abe 《Anatomia, histologia, embryologia》1999,28(3):183-191
The morphology of the gland cells in the glandular sac area of the Bactrian camel and the composition of secretory substances were examined by histochemical methods. It was found that the gland cells of the glandular sac area were of the same type and size as those of the cardiac glands. The composition of secretory substances from the glandular sac area was the same as that of secretory substances from the cardiac glands. Moreover, secretory substances from the gland cells of the glandular sac area contained a great deal of acid glycoconjugates, such as sialic acid, in addition to neutral saccharides (fucose, mannose, glucose, N-acetyl-D-glucosamin, galactose and N-acetyl-galactosamin). Furthermore, immunohistochemical examination showed that progastricsin was present in the gland cells of the glandular sac area and the cardiac gland. In this study, histological analysis suggested that the stomach of the Bactrian camel is a single cavity stomach, formed as a result of multiple differentiation and growth of cardiac glands through the process of evolution. 相似文献
4.
Pinard CL Weiss ML Brightman AH Fenwick BW Davidson HJ 《Anatomia, histologia, embryologia》2003,32(5):257-262
Dorsal lacrimal glands, superior glands of the third eyelid and Harderian glands (deep gland of the third eyelid) from 19 bison and 18 cattle free of apparent ocular disease were examined to compare the normal anatomical properties of these glands. All glands were characterized and measured (length and width). The gross anatomy of the dorsal lacrimal glands was similar, with the exception of a bipartite gland in cattle. The bison's superior gland of the third eyelid and Harderian gland was longer as compared with cattle. A subset of the bison and cattle samples (five bison and five cattle) was sectioned for histological and histochemical analysis. The histology of the dorsal lacrimal and superior gland of the third eyelid revealed tubuloalveolar cells with basophilic vacuolated cytoplasm in bison and eosinophilic granular cytoplasm in cattle. The Harderian glands consisted of a tubuloalveolar anterior part combined with large lumens acini lined with cuboidal epithelium in the posterior part; the posterior part of the bison Harderian gland was more predominant than in cattle samples. Mucosubstance histochemistry revealed acidic and neutral glycoproteins with similar staining patterns in all glands of both species. 相似文献
5.
Casts of the nasolacrimal duct system were obtained from 50 euthanised cats including brachy-, meso- and dolichocephalic breeds. The course of the nasolacrimal duct, which was assessed radiographically and gross-anatomically, was strongly related to the shape of the skull. In meso- and dolichocephalic cats the nasolacrimal duct formed a dorsally opened arch with the descending part being directed rostroventrally. The main part of the duct passed the nasal cavity in a rather horizontal course parallel to the hard palate and was located ventrally to the lacrimal foramen. However, foreshortening of the face was associated with a right-angled or even acute-angled alignment of the duct. In higher degrees of brachycephaly the main part of the duct ascended beyond the level of the lacrimal foramen and passed the nasal cavity dorsal to the level of the lacrimal foramen. This specific course of the nasolacrimal duct in brachycephalic cats was consistent with a steeper alignment and attachment of the maxilloturbinate. Accessory orifices of the nasolacrimal duct opening into the nasal cavity had never been observed. The present results strongly suggest that the specific course of the nasolacrimal duct in brachycephalic cats might hinder the drainage of the lacrimal fluid irrespective of the diameter of the lumen of the nasolacrimal duct system. 相似文献
6.
Reasons for performing study: No endoscopic examination of the nasolacrimal duct has been described before. In contrast with other imaging techniques, endoscopy provides a direct inspection of the intralumen and ductal mucosa in standing sedation. Objectives: To provide a reference against which the endoscopic and clinical features of obstructive nasolacrimal disease in the horse may be compared. Methods: Endoscopic examination of the nasolacrimal duct was performed in 10 French Thoroughbred bay mares with a 3 mm shaft diameter flexible fibrescope. The duct was divided into 3 zones (1, 2 and 3) from the nostril to the lacrimal sac. Results: Endoscopic examination of the nasolacrimal duct appeared to be quite easy to perform in Zones 1 and 2, while the ease or difficulty of examining Zone 3 depended on the weight and size of the horse for the position of the endoscope in the lacrimal canal. Conclusions: Endoscopic inspection has provided the possibility of a novel diagnostic approach to conditions of the nasolacrimal duct in horses. Potential relevance: Endoscopic examination of the nasolacrimal duct could help to diagnose and treat nasolacrimal diseases by performing sample withdrawal and duct irrigation. 相似文献
7.
Pinard CL Weiss ML Brightman AH Fenwick BW Davidson HJ 《American journal of veterinary research》2003,64(1):104-108
OBJECTIVE: To evaluate lactoferrin and lysozyme content in various ocular glands of bison and cattle and in tears of bison. SAMPLE POPULATION: Tissues of ocular glands obtained from 15 bison and 15 cattle and tears collected from 38 bison. PROCEDURE: Immunohistochemical analysis was used to detect lysozyme and lactoferrin in formalin-fixed, paraffin-embedded sections of the ocular glands. Protein gel electrophoresis was used to analyze ocular glands and pooled bison tears by use of a tris-glycine gel and SDS-PAGE. Western blotting was used to detect lactoferrin and lysozyme. RESULTS: Immunohistochemical staining for lactoferrin was evident in the lacrimal gland and gland of the third eyelid in cattle and bison and the deep gland of the third eyelid (Harder's gland) in cattle. Equivocal staining for lactoferrin was seen for the Harder's gland in bison. An 80-kd band (lactoferrin) was detected via electrophoresis and western blots in the lacrimal gland and gland of the third eyelid in cattle and bison, Harder's glands of cattle, and bison tears. An inconsistent band was seen in Harder's glands of bison. Lysozyme was not detected in the lacrimal gland of cattle or bison with the use of immunohistochemical analysis or western blots. Western blots of bison tears did not reveal lysozyme. CONCLUSIONS AND CLINICAL RELEVANCE: Distribution of lactoferrin and a lack of lysozyme are similar in the lacrimal gland of cattle and bison. Differences in other tear components may be responsible for variability in the susceptibility to infectious corneal diseases that exists between bison and cattle. 相似文献
8.
9.
R D Whitley 《Veterinary Clinics of North America: Small Animal Practice》2000,30(5):1151-1167
Bacterial infections are frequently associated with diseases of the eyelids, cornea, and conjunctiva. Animals sustaining KCS commonly have bacterial infections of the external eye owing to a lack of antimicrobial properties present in the normal tearfilm. Infection can occur in the nasolacrimal duct or lacrimal sac, which is referred to as dacryocystitis. Severe corneal ulcers are frequently infected with bacteria, especially Pseudomonas sp. Three new topical ophthalmic antibiotics have recently become commercially available: ciprofloxacin, norfloxacin, and ofloxacin. 相似文献
10.
P. J. Raffan 《The Journal of small animal practice》1990,31(6):305-308
A new surgical technique is described for the attempted relief of glaucoma in a dog. To achieve aqueous drainage a Supramid thread was placed in the anterior chamber, threaded subconjunctival^ across the globe and inserted into the nasolacrimal duct via the dorsal lacrimal punctum. It is hoped that the level of success achieved in this one case will prompt others, to investigate the nasolacrimal duct as a possible drainage route for aqueous fluid. 相似文献
11.
A 10-year-old female spayed Vizsla had intermittent mucoid ocular discharge from the right eye for 7 years. History, clinical findings, imaging studies, and culture and histopathology results confirmed chronic dacryocystitis with granuloma. A dacryocystomaxillorhinostomy was performed to preserve the functional portions of the nasolacrimal system remaining in this patient, as well as to promote healing of the lacrimal sac granuloma and secondary infection. Complete resolution of the clinical abnormalities was achieved, and the dog remains healthy 3 years postoperatively. 相似文献
12.
Voigt S Fuchs-Baumgartinger A Egerbacher M Tichy A Nell B 《Veterinary ophthalmology》2012,15(5):333-344
Objective To investigate the density and distribution of conjunctival goblet cells (GC) and study the anatomy and microscopic characteristics of glands associated with the eye in chinchillas (Chinchilla Laniger). Procedure 12 chinchillas were included in the study. Conjunctiva (divided into four regions), eyelids, and glands were embedded in paraffin wax, sectioned, stained, and analyzed. Results Highest GC densities were found in the palpebral region of the nasal and temporal conjunctiva of both eyelids (GC index: 25.1-18.2%), and lowest densities, in the bulbar and marginal region of the nasal and temporal conjunctiva of both eyelids (GC index: 1.5-0.0%). Meibomian glands extend along the entire length of both eyelids, and the whole glandular complex broadens toward the temporal canthus. This is macroscopically visible through the conjunctiva. The openings of the Meibomian glands are macroscopically not discernible. The light pink, smooth, and crescent-shaped lacrimal gland lies next to the aforementioned broadened part of the Meibomian glands in the temporal canthus. The whitish, 0.9-cm-long, smooth Harderian gland is firmly attached to the posterior part of the globe and extends nasally from the optic nerve to the equator. Furthermore, chinchillas possess two lacrimal puncta, situated on the inner conjunctival surface of both eyelids near the medial canthus. A pigmented lacrimal canaliculus originates from each punctum. The vestigial nictitating membrane is supported by a hyaline cartilage and is pigmented at its free margin. Conclusions Chinchillas possess a Harderian gland, a lacrimal gland, and Meibomian glands. The GC density in the nasal and temporal palpebral conjunctiva is higher than in guinea pigs. 相似文献
13.
Objective To determine if feline lacrimal glands, glands of the third eyelid, corneas, and corneal sequestra contain porphyrins, which could be responsible for the brown/amber discoloration of corneal sequestra and tears in affected cats. Procedures Samples of grossly normal cornea, lacrimal gland, gland of the third eyelid, and sequestra obtained via keratectomy were collected. Porphyrin concentrations of the homogenate were determined by spectrofluorometry with protoporphyrin IX and coproporphyrin III dihydrochloride used as standards. A hamster harderian gland was used as a positive control. Results Normal tissues were harvested from one eye each of 14 nonclient owned, adult, mixed‐breed, short‐hair cats euthanized for reasons not associated with this study. Eighteen sequestra were acquired from cats undergoing unilateral lamellar keratectomies. Breeds of the affected cats included eight Himalayan, five domestic shorthair, and one each of four other breeds. Only the positive control and standards contained levels of porphyrins above background. All feline samples examined were histologically normal with no evidence of porphyrins. Conclusions Porphyrins are absent in normal feline lacrimal glands, corneas, and corneal sequestra. Porphyrins do not appear to be the cause of the brown/amber color of feline corneal sequestra. 相似文献
14.
R B Burns 《Research in veterinary science》1979,27(1):69-75
Surgical removal of the Harderian gland of the domestic fowl resulted in increased secretory activity in the lacrimal gland and also in an increase in goblet cell numbers along the length of the lacrimal gland duct. Plasma cells were more numerous in the lacrimal glands of operated birds and they were capable of antibody responses to both systemically and topically applied bovine serum albumin (BSA). Gel diffusion studies showed the presence of anti-BSA activity in the tears and serum of fowls stimulated after surgical removal of the Harderian gland. 相似文献
15.
Braun U Spiess B Matheis F Schnetzler C Trösch L Drögemüller C Gerspach C 《Schweizer Archiv für Tierheilkunde》2012,154(3):121-123
A five-year-old Brown Swiss bull was referred to the Department of Farm Animals, University of Zurich, because of bilateral epiphora that was unresponsive to treatment. Clinical examination revealed a fistulous opening medial to the medial canthus of both eyes and mucopurulent discharge from both openings. Attempts to flush the nasolacrimal duct via the lacrimal points resulted in the fluid exiting via the fistulous opening. Retrograde flushing of the nasolacrimal duct from the nasolacrimal opening resulted in the flush fluid flowing back out the nasolacrimal opening. Bilateral lacrimal fistula medial to the medial canthus of the eye was diagnosed based on the findings. The same anomaly was diagnosed a year later in 4?related female animals referred to our Department for other reasons. Three of the cases were sired by the bull described above and one was sired by his half-brother. Therefore, an autosomal recessive mode of inheritance of this anomaly was assumed. Clinical, epidemiological and molecular studies of the offspring of both bulls are underway to further investigate this anomaly. 相似文献
16.
P. G. C. BEDFORD 《The Journal of small animal practice》1988,29(4):231-237
Unilateral closed angle glaucoma was controlled for a 12 month plus period in a dog using a one-piece (Joseph) drainage implant. The implant consists of a valved anterior chamber tube which is attached to a large surface area strap placed under conjunctiva, Tenon's capsule and rectus muscles. The tube bypasses the closed iridocorneal angle, and the intraocular pressure has been maintained within the normal range by aqueous absorption from a large subconjunctival scar sac which has developed around the strap. Additional hypotensive therapy has not proved necessary, and untoward sequelae associated with the presence of the implant within the ocular tissues have not occurred. 相似文献
17.
Philippe Durieux Stéphane Libermann Elise Rattez Marie Lagadic Yannick Ruel Thomas Chen 《Veterinary ophthalmology》2015,18(1):69-77
To describe a case of a nasolacrimal canaliculocele with intranasal extension in a dog. A 6‐year‐old neutered female Jack Russell Terrier was referred to the Centre Hospitalier Vétérinaire des Cordeliers for a slowly enlarging mass adjacent to the medial canthus of the right eye of 5 months duration. Ophthalmic exam, ultrasound, fine needle aspiration, dacryocystorhinography and computerized tomography examinations were performed. Rhinoendoscopic treatment with marsupialisation of the endonasal canaliculocele was performed. Physical examination revealed a 3 cm diameter, subcutaneous mass beneath the medial canthus of the right eye, with a defect in the maxillary bone below. Dacryocystorhinography demonstrated blockage at the level of the nasolacrimal duct. Fine needle aspiration confirmed the cavitary nature of the lesion. During rhinoendoscopy, a mass containing watery fluid was found. Following marsupialisation with a large mass wall resection, the lacrimal drainage system irrigated freely in the nasal chamber. The communication of the lumen of the diverticulum with the lumen of the superior but not the inferior canaliculus was clearly demonstrated during endoscopy. Given negative immunohistochemical staining for smooth muscle actin and desmin, nasolacrimal dacryocele appears to be the most likely diagnosis. Histological examination confirmed that no goblet cells were present in the wall of the diverticulum, which is consistent with the canaliculus rather than the lacrimal sac. Complete resolution was observed without recurrence one year after surgery. Despite its rarity, a canaliculocele should be considered in adult dogs with nasolacrimal duct obstruction. Marsupialisation seems to be the appropriate therapy. 相似文献
18.
James K Klaassen 《Veterinary Clinics of North America: Small Animal Practice》2002,32(6):1237-66, v-vi
This article deals with the cytologic appearance of various glandular tissues located in the subcutaneous tissues. Normal cytologic features are described. In addition, inflammatory, infectious, neoplastic, and hyperplastic changes are discussed. Most of these features are depicted in the 60+ photomicrographs that are distributed throughout the article. Many of the changes are similar in the glands, and it is usually possible to differentiate the gland of origin based on cytologic appearances. Subcutaneous neoplasms that are not associated with a subcutaneous gland, and lymph node cytology are not covered in this article but are addressed elsewhere. 相似文献
19.
Naranjo C Fondevila D Altet L Francino O Ríos J Roura X Peña T 《Veterinary journal (London, England : 1997)》2012,193(1):168-173
Leishmania infantum infection is highly prevalent in endemic areas. Dogs with leishmaniosis may develop keratoconjunctivitis sicca (KCS). The goals of this study were (1) to quantify Leishmania amastigotes in the Meibomian glands (MG), main lacrimal gland (MLG) and nictitating membrane gland (NMG) from dogs with leishmaniosis; (2) to compare these results to immunohistochemistry (IHC), and (3) to explore the association between the Leishmania parasite load and the presence of ocular clinical signs. Twenty-five dogs diagnosed with leishmaniosis were included. MG, MLG and NMG from both eyes were collected. Histopathology, IHC and real-time PCR were performed. All specimens yielded positive real-time PCR results. For all three glands, samples from dogs with ocular clinical signs had mean ΔCt (cycle threshold) values significantly lower (higher parasite loads) than those from dogs without signs. Cut-off values of ΔCt<0, ΔCt<4 and ΔCt<4.9 for MG, MLG and NMG, resulted in a likelihood ratio of positives of 5.9, 6.38 and 6.38, respectively. Samples with ΔCt values below the reported cut-off were significantly more likely to display clinical signs related to KCS than those with results above the cut-off, for all three glands. Similarly, ΔCt values below the cut-off were significantly associated with positive IHC. In this study real-time PCR has been standardised for use in MG, MLG and NMG. A cut-off value established for each of these tissues may aid the clinician in the discrimination between ocular signs related to Leishmania from those associated with other causes of KCS. 相似文献