Nasal dermoid cyst with intracranial extension in a cat

Brady, Stacey; Bell, Erin M.; Courtman, Natalie; Chevoir, Matthias Le

doi:10.1177/2055116919827404

Cited by 6 publications

(19 citation statements)

References 31 publications

(66 reference statements)

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“…Although there are only a few reports regarding the appearance of dermoid cysts on CT and MRI, there are remarkable differences to nasopharyngeal polyps. 9,18–22 In one report of a dermoid cyst, including CT imaging findings, a cystic structure with mixed attenuation and a hypoattenuating centre was noted, 20 which is comparable to the findings in our patient. In a study of 13 cats with nasopharyngeal polyps that underwent a CT examination, all masses were hypoattenuating to the adjacent musculature and isoattenuating to soft tissue.…”

Section: Discussionsupporting

confidence: 88%

“…Although dermoid cysts have been reported in cats, [2][3][4][5][6][7][8][9] with a predisposition for the neck and shoulder region, 5 to our knowledge, this is the first report of such a cyst located within the nasopharynx.…”

Section: Discussionmentioning

confidence: 95%

“…In a few MRI reports regarding the appearance of dermoid cysts not associated with the spinal cord, they are described as well demarcated and heterogeneously hyperintense in T1 consistent with fat and fluid. 9,19 One report additionally described a thin rim, which took up contrast medium. 18 In comparison, MRI examination of nasopharyngeal polyps showed a stalk-like structure hyperintense in T2 vs grey matter, hypo- to isointense on T1 and a heterogeneous rim enhancement after the administration of contrast medium in one study.…”

Section: Discussionmentioning

confidence: 99%

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Pharyngeal dermoid cyst causing partial upper airway obstruction in a cat

Koch

Csébi

Lipnik

et al. 2022

Journal of Feline Medicine and Surgery Open Reports

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Case summary A 2-year-old cat was presented with nasopharyngeal stridor and stertor. Radiographs of the upper neck region showed a mass lesion in the nasopharynx. A nasopharyngeal polyp was suspected, but an attempt at endoscopic removal failed, owing to fragmentation of the mass and excessive haemorrhage. A sample was taken and histology confirmed a dermoid cyst. CT was performed and the lesion was described as most likely to be a dermoid cyst, consistent with the histopathological findings. Surgical exploration and subsequent complete removal of the mass led to a full recovery. Relevance and novel information The nasopharyngeal location represents a previously unreported location of a dermoid cyst. This report raises awareness of dermoid cysts as a potential differential diagnosis within the nasopharyngeal region and highlights the importance of pre-interventional diagnostic imaging.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

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Pharyngeal dermoid cyst causing partial upper airway obstruction in a cat

Koch

Csébi

Lipnik

et al. 2022

Journal of Feline Medicine and Surgery Open Reports

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“…Although respiratory infections, nasopharyngeal polyps, and nasal neoplasia were the most significant and frequent causes of URTD symptoms, our study shows that other causes, such as a dermoid cyst, oronasal fistula, and larynx neoplasia should be included as a possible cause of this disease. Currently information about nasal dermoid cysts is limited, but it is known that cysts evolve because of abnormal embryogenesis during the development of the frontonasal region, and may be demarcated with intracranial extension [29].…”

Section: Ct=computed Tomographymentioning

confidence: 99%

Feline upper respiratory tract disease – Computed tomography and laboratory diagnostic

Vekšins

2022

Vet World

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Background and Aim: Upper respiratory tract disease (URTD) is prevalent in cats, and diagnosis can be challenging. This study aimed to determine the most common causes of cat URTD in Latvia and describe computed tomography (CT) and laboratory diagnostic findings. Materials and Methods: The present retrospective study included a total of 94 cats who were diagnosed with URTD. All cats underwent CT, and 50 of them had additional diagnostic tests, such as histology and respiratory infection polymerase chain reaction (PCR) testing. Results: The most common CT finding was rhinosinusitis (55.32%) followed by nasal neoplasia (26.6%) and nasopharyngeal polyp (14.89%), but in three cats, a cause of respiratory symptoms was larynx neoplasia, nasal dermoid cyst, and an oronasal fistula. PCR test showed that the most cause of rhinosinusitis was Mycoplasma felis. Nasopharyngeal polyp as the primary diagnosis was identified in 14 cats from 3 months to 6 years, with an average age of 1.85 ± 1.915 years, and 54% of cats were female. Nasal neoplasia as a primary CT diagnosis was determined in 25 cats at the age of 5–18 years, with an average age of 10.56 ± 3.416 years. Histology diagnosis included four types of neoplasia – squamous cell carcinoma, sarcoma, adenocarcinoma, and aplastic carcinoma. Conclusion: This study describes the most common CT and laboratory findings in cats with URTD. Included information will be helpful for general veterinary practitioners and researchers and will update their knowledge on feline URTD.

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“…[13][14][15][16] However, a recent case report documented a nasal dermoid sinus with intracranial extension with MRI in a cat. 17 Considering the proposed classification by Bornard et al, 13 the cat would be classified as having a type IVc dermoid sinus. 17 Our case would be the first dog reported with a type IVb dermoid sinus.…”

Section: Discussionmentioning

confidence: 99%

Diagnosis and surgical management of a type IVb dermoid sinus in a Cavalier King Charles Spaniel

Danciu,

Briola,

Volckaert

et al. 2023

Vet Record Case Reports

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A 6‐year‐old, male, neutered Cavalier King Charles Spaniel dog was referred with a 4‐year history of an intermittently draining fistula on the midline of the frontal bones of the skull. Magnetic resonance imaging and computed tomography scan of the head demonstrated an extra‐axial mass in the midline between the frontal lobes, contacting the meninges and extending rostrally through a defect in the frontal bones. The mass was surgically excised via a frontal craniotomy. Histopathology of the mass demonstrated stratified squamous and keratinising epithelium with adnexal structures, consistent with the diagnosis of a dermoid sinus. Previous reports have documented dermoid sinuses in the nasal region in dogs and cats with intracranial extension. This case report documents a dermoid sinus in the frontal region with intracranial extension in a dog, confirmed by advanced diagnostic imaging, histopathology, and successfully treated surgically.

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Nasal dermoid cyst with intracranial extension in a cat

Cited by 6 publications

References 31 publications

Pharyngeal dermoid cyst causing partial upper airway obstruction in a cat

Pharyngeal dermoid cyst causing partial upper airway obstruction in a cat

Feline upper respiratory tract disease – Computed tomography and laboratory diagnostic

Diagnosis and surgical management of a type IVb dermoid sinus in a Cavalier King Charles Spaniel

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