Spinal ectopic choroid plexus papilloma in a cat
Case summary A 10-year-old male neutered Russian Blue cat was presented with a 2-month history of progressive non-ambulatory paraparesis. Spinal MRI revealed a well-demarcated, compressive intradural extramedullary mass at the level of T1 vertebra. The mass had subtle hyperintensity on T2-weighted i...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2021-10-01
|
| Series: | Journal of Feline Medicine and Surgery Open Reports |
| Online Access: | https://doi.org/10.1177/20551169211048464 |
| _version_ | 1819018140234809344 |
|---|---|
| author | Joana Tabanez Samuel Beck Colin Driver Clare Rusbridge |
| author_facet | Joana Tabanez Samuel Beck Colin Driver Clare Rusbridge |
| author_sort | Joana Tabanez |
| collection | DOAJ |
| description | Case summary A 10-year-old male neutered Russian Blue cat was presented with a 2-month history of progressive non-ambulatory paraparesis. Spinal MRI revealed a well-demarcated, compressive intradural extramedullary mass at the level of T1 vertebra. The mass had subtle hyperintensity on T2-weighted images, was isointense on T1-weighted images and had diffuse, marked enhancement following gadolinium administration. Neuroaxis MRI, including limited brain sequences, excluded other visible lesions. Thoracic and abdominal radiographs were unremarkable. The mass was resected via a dorsal C7–T2 laminectomy and durotomy. Histopathology revealed a neoplasm composed of columnar-to-polygonal cells forming bilayered palisading patterns with a few apical cilia. Three mitoses were noted in 10 high-power fields. This was consistent with an epithelial neoplasm and initially a metastatic adenocarcinoma was considered most likely. Full-body CT with contrast and including the brain found rhinitis but did not identify any additional neoplastic foci. Biopsies of the nasal cavity and fine-needle aspiration of the spleen and liver were unremarkable. On immunohistochemical evaluation, pan-cytokeratin and E-cadherin immunolabelling was observed; however, synaptophysin, thyroglobulin, chromogranin A and glial fibrillary acidic protein was not detected. This, along with the histological morphology and absence of a primary tumour, was compatible with an ectopic choroid plexus neoplasm. Follow-up performed at 3, 14 and 24 months postoperatively revealed neurological improvement without recurrence. Relevance and novel information We describe the presentation, histopathological and immunohistochemical features and outcome of a case of a rare ectopic choroid plexus neoplasm in the spinal cord of a cat. |
| first_indexed | 2024-12-21T03:14:41Z |
| format | Article |
| id | doaj.art-cfcb75ef405b4f8a8091198e8fc05d29 |
| institution | Directory Open Access Journal |
| issn | 2055-1169 |
| language | English |
| last_indexed | 2024-12-21T03:14:41Z |
| publishDate | 2021-10-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Feline Medicine and Surgery Open Reports |
| spelling | doaj.art-cfcb75ef405b4f8a8091198e8fc05d292022-12-21T19:17:53ZengSAGE PublishingJournal of Feline Medicine and Surgery Open Reports2055-11692021-10-01710.1177/20551169211048464Spinal ectopic choroid plexus papilloma in a catJoana Tabanez0Samuel Beck1Colin Driver2Clare Rusbridge3Neurology and Neurosurgery Department, Fitzpatrick Referrals Orthopaedics and Neurology, Eashing, UKVPG Histology, Horner Court, Bristol, UKLumbry Park Veterinary Specialists, Alton, UKSchool of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, UKCase summary A 10-year-old male neutered Russian Blue cat was presented with a 2-month history of progressive non-ambulatory paraparesis. Spinal MRI revealed a well-demarcated, compressive intradural extramedullary mass at the level of T1 vertebra. The mass had subtle hyperintensity on T2-weighted images, was isointense on T1-weighted images and had diffuse, marked enhancement following gadolinium administration. Neuroaxis MRI, including limited brain sequences, excluded other visible lesions. Thoracic and abdominal radiographs were unremarkable. The mass was resected via a dorsal C7–T2 laminectomy and durotomy. Histopathology revealed a neoplasm composed of columnar-to-polygonal cells forming bilayered palisading patterns with a few apical cilia. Three mitoses were noted in 10 high-power fields. This was consistent with an epithelial neoplasm and initially a metastatic adenocarcinoma was considered most likely. Full-body CT with contrast and including the brain found rhinitis but did not identify any additional neoplastic foci. Biopsies of the nasal cavity and fine-needle aspiration of the spleen and liver were unremarkable. On immunohistochemical evaluation, pan-cytokeratin and E-cadherin immunolabelling was observed; however, synaptophysin, thyroglobulin, chromogranin A and glial fibrillary acidic protein was not detected. This, along with the histological morphology and absence of a primary tumour, was compatible with an ectopic choroid plexus neoplasm. Follow-up performed at 3, 14 and 24 months postoperatively revealed neurological improvement without recurrence. Relevance and novel information We describe the presentation, histopathological and immunohistochemical features and outcome of a case of a rare ectopic choroid plexus neoplasm in the spinal cord of a cat.https://doi.org/10.1177/20551169211048464 |
| spellingShingle | Joana Tabanez Samuel Beck Colin Driver Clare Rusbridge Spinal ectopic choroid plexus papilloma in a cat Journal of Feline Medicine and Surgery Open Reports |
| title | Spinal ectopic choroid plexus papilloma in a cat |
| title_full | Spinal ectopic choroid plexus papilloma in a cat |
| title_fullStr | Spinal ectopic choroid plexus papilloma in a cat |
| title_full_unstemmed | Spinal ectopic choroid plexus papilloma in a cat |
| title_short | Spinal ectopic choroid plexus papilloma in a cat |
| title_sort | spinal ectopic choroid plexus papilloma in a cat |
| url | https://doi.org/10.1177/20551169211048464 |
| work_keys_str_mv | AT joanatabanez spinalectopicchoroidplexuspapillomainacat AT samuelbeck spinalectopicchoroidplexuspapillomainacat AT colindriver spinalectopicchoroidplexuspapillomainacat AT clarerusbridge spinalectopicchoroidplexuspapillomainacat |