scholarly journals Choroid Plexus Papilloma in a Dog

1971 ◽  
Vol 8 (1) ◽  
pp. 91-95 ◽  
Author(s):  
H. J. Kurtz ◽  
Griselda F. Hanlon
Keyword(s):  
Choroid Plexus ◽  
Fourth Ventricle ◽  
Choroid Plexus Papilloma ◽  
Clinical Signs ◽  
Single Layer ◽  
Ciliated Epithelium ◽  
The Central Nervous System ◽  
Well Differentiated ◽  
The Right ◽  
Plexus Papilloma

A 6-year-old female Cocker Spaniel with a choroid plexus papilloma had clinical signs of disease of the central nervous system for 1 month. The neoplasm originated from the right choroid plexus of the fourth ventricle and had displaced contiguous parts of the medulla oblongata and cerebellum. It was well differentiated and was composed of papillae arranged in an arboriform pattern. The papillae were lined by a single layer of non ciliated epithelium.

First report of the simultaneous occurrence of choroid plexus papilloma and meningioma in a dog

2009 ◽  
Vol 57 (3) ◽  
pp. 389-397 ◽  
Author(s):  
Luciano Espino ◽  
Maruska Suarez ◽  
German Santamarina ◽  
Mónica Vila ◽  
Natalia Miño ◽  
...  
Keyword(s):  
Choroid Plexus ◽  
Medical Literature ◽  
Choroid Plexus Papilloma ◽  
The Other ◽  
Simultaneous Occurrence ◽  
Falx Cerebri ◽  
History Of ◽  
The Central Nervous System ◽  
The Right ◽  
Plexus Papilloma

A 7-year-old spayed female English Cocker Spaniel was examined because of a 1-week history of lethargy, stumbling over objects and circling, and the presence of two tonic-clonic generalised seizures two days before presentation. The neurological signs suggested a lesion involving the right forebrain. Computed tomography revealed the presence of two intracranial masses, one located inside the right lateral ventricle and the other located in the right frontal lobe attached to the falx cerebri. Because of the poor prognosis, the owner refused to continue with the therapy and the dog was euthanised. On postmortem examination one mass was diagnosed histologically as a meningioma and the other as a papilloma of the choroid plexus. Information in the veterinary literature on multiple malignancies affecting the central nervous system is very limited. To the best of the authors’ knowledge, the association of meningioma and choroid plexus papilloma has never been reported either in the human or in the veterinary medical literature.

Retrosigmoid approach for resection of an extraventricular choroid plexus papilloma in the cerebellopontine angle

2014 ◽  
Vol 36 (v1supplement) ◽  
pp. 1
Author(s):  
Lee A. Tan ◽  
Ricardo B. Fontes ◽  
Richard W. Byrne
Keyword(s):  
Choroid Plexus ◽  
Fourth Ventricle ◽  
Cerebellopontine Angle ◽  
Choroid Plexus Papilloma ◽  
Surgical Techniques ◽  
Retrosigmoid Approach ◽  
High Definition ◽  
The Right ◽  
Choroid Plexus Papillomas ◽  
Plexus Papilloma

Choroid plexus papillomas (CPP) are uncommon benign brain tumors that usually arise in the fourth ventricle in adults and lateral ventricles in children. Extraventricular CPPs are rare and can be found primarily in the cerebellopontine angle (CPA). We present a case of primary extraventricular CPP in the right CPA successfully resected with retrosigmoid approach. Detailed surgical techniques of retrosigmoid craniotomy and tumor dissection are presented in high definition video with narration.The video can be found here: http://youtu.be/6591en3nWlY.

scholarly journals Choroid plexus papilloma in an adult ewe – a case report

2013 ◽  
Vol 82 (1) ◽  
pp. 9-11
Author(s):  
Jose María González ◽  
Delia Lacasta ◽  
Santiago Sanz ◽  
María Climent ◽  
Alicia Uixera ◽  
...  
Keyword(s):  
Choroid Plexus ◽  
Small Ruminant ◽  
Choroid Plexus Papilloma ◽  
Postural Reactions ◽  
The Central Nervous System ◽  
Primary Neoplasms ◽  
The Right ◽  
Veterinary Faculty ◽  
The Brain ◽  
Plexus Papilloma

Primary neoplasms of the central nervous system have been rarely reported in sheep. A three-year-old Rasa Aragonesa ewe was admitted to the small ruminant external consultancy at the Veterinary Faculty of University of Zaragoza, Spain. Clinical, haematological and neurological examinations were performed. Neurological examination showed signs of ataxia, hyperextension of the right front limb and abnormal postural reactions. The animal was unable to stand and walk, even with help. Patellar and flexor reflexes were normal and superficial sensation was present but decreased. Humanitarian sacrifice was carried out one month later. Gross and histopathological findings revealed a choroid plexus papilloma located in the fourth ventricle of the brain. To the authors’ knowledge this is the first description of this neoplastic disorder in sheep.

Choroid plexus papilloma in a free ranging eared dove (Zenaida auriculata)

2021 ◽  
Vol 14 (3) ◽  
pp. 188-190
Author(s):  
Pedro Navas-Suárez ◽  
◽  
Ticiana Ervedosa ◽  
Celso di Loreto ◽  
Rodrigo Ressio ◽  
...  
Keyword(s):  
Choroid Plexus ◽  
Choroid Plexus Papilloma ◽  
Single Layer ◽  
Domestic Animals ◽  
Choroid Plexus Carcinoma ◽  
Wild Animals ◽  
Neoplastic Cells ◽  
Well Differentiated ◽  
Free Ranging ◽  
Plexus Papilloma

Choroid plexus tumors (CPT) are rare neoplasms and histologically classified as choroid plexus papilloma (CPP), atypical choroid plexus papilloma (APP), and choroid plexus carcinoma (CPC). These neoplasms have been described in humans, domestic animals (canine, feline, equine, caprine) and some wild animals (cetaceans and Psittacidae birds). To our best knowledge, herein we report the first CCP in a free-ranging eared dove (Columbiformes; Zenaida auriculata, de Murs 1847). Histologically, the ventricle was dilated, with a papillary proliferation (arboriform pattern) in topography of CP. The neoplasm was well-differentiated, composed by a single layer of cuboidal cells, anchored in a delicate fibrovascular stroma. The neoplastic cells exhibited moderate stroma, with well-defined borders and round nuclei, with vesicular chromatin and inconspicuous nucleoli. Mitotic activity was low (<1 mitosis per 10 high-power fields). Immunohistochemistry for cytokeratin markers (AE1/AE3 antibody) were implemented, however, both neoplastic cells and normal epithelial tissues do not show immunoreactivity.

Intrinsic brainstem choroid plexus papilloma

2004 ◽  
Vol 100 (6) ◽  
pp. 1076-1078 ◽  
Author(s):  
Ashok Pillai ◽  
Kariyattil Rajeev ◽  
Sushil Chandi ◽  
Muthukuttiparambil Unnikrishnan
Keyword(s):  
Central Nervous System ◽  
Choroid Plexus ◽  
Choroid Plexus Papilloma ◽  
Residual Tumor ◽  
Brainstem Lesion ◽  
Content Type ◽  
The Central Nervous System ◽  
Choroid Plexus Papillomas ◽  
Fine Print ◽  
Plexus Papilloma

✓ The authors report an intrinsic brainstem lesion that was diagnosed initially as a pontine cavernoma, which finally proved to be a choroid plexus papilloma. Choroid plexus papillomas are rare tumors of the central nervous system and are usually intraventricular in location. The occurrence of this tumor in an intraparenchymal location is extremely rare, and its occurrence within the brainstem is previously unreported. The authors also report a trial of chemotherapy with lomustine in the management of the residual tumor.

Ossified choroid plexus papilloma of the fourth ventricle: elucidation of the mechanism of osteogenesis in benign brain tumors

2013 ◽  
Vol 12 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Sunil Manjila ◽  
Erin Miller ◽  
Amad Awadallah ◽  
Shunichi Murakami ◽  
Mark L. Cohen ◽  
...  
Keyword(s):  
Brain Tumors ◽  
Bone Formation ◽  
Choroid Plexus ◽  
Fourth Ventricle ◽  
Choroid Plexus Papilloma ◽  
Immunohistochemical Analysis ◽  
Pluripotent Cell ◽  
Bone Trabeculae ◽  
Plexus Papilloma ◽  
Mature Bone

True ossification within benign brain tumors is rare, and the molecular mechanism for this process is poorly understood. The authors report a case of ossified choroid plexus papilloma (CPP) and analyze it to help elucidate the underlying molecular basis of osteogenesis in benign brain tumors. A 21-year-old man presented with headache and depression that progressed over years. Computed tomography, MRI, and angiography demonstrated a large heavily calcified fourth ventricular tumor with a vascular blush and no hydrocephalus. The tumor was resected and was found to be an ossified CPP. Immunohistochemical staining for VEGF, Sox2, BMP-2, osterix, osteopontin, and osteocalcin was performed in an attempt to elucidate the mechanism of bone formation. The tumor was extensively ossified with mature bone trabeculae. Immunostaining for VEGF was positive. Additional staining showed the presence of osteocalcin in this ossified tumor but not in samples of nonossified CPPs collected from other patients. Staining for osterix and osteopontin was equivocally positive in the ossified CPP but also in the nonossified CPPs examined. The presence of osteocalcin in the ossified CPP demonstrates that there is true bone formation rather than simple calcification. Its appearance within cells around the trabeculae suggests the presence of osteoblasts. The presence of osterix suggests that a pluripotent cell, or one that is already partially differentiated, may be differentiated into an osteoblast through this pathway. This represents the first systematic immunohistochemical analysis of osteogenesis within choroid plexus tumors.

Suprasellar seeding of a benign choroid plexus papilloma of the fourth ventricle with local recurrence

2000 ◽  
Vol 42 (9) ◽  
pp. 657-661 ◽  
Author(s):  
M. Irsutti ◽  
M. Thorn-Kany ◽  
P. Arrué ◽  
J. Richaud ◽  
J. C. Sol ◽  
...  
Keyword(s):  
Local Recurrence ◽  
Choroid Plexus ◽  
Fourth Ventricle ◽  
Choroid Plexus Papilloma ◽  
Plexus Papilloma

scholarly journals Cerebrospinal fluid cytology of choroid plexus tumor: A report of two cases

CytoJournal ◽  
2019 ◽  
Vol 16 ◽  
pp. 9
Author(s):  
Manjari Kishore ◽  
Prajwala Gupta ◽  
Minakshi Bhardwaj
Keyword(s):  
Cerebrospinal Fluid ◽  
Choroid Plexus ◽  
Choroid Plexus Papilloma ◽  
Female Child ◽  
Pediatric Brain Tumors ◽  
Choroid Plexus Tumor ◽  
The Central Nervous System ◽  
Pediatric Brain ◽  
Plexus Papilloma ◽  
Fluid Cytology

Choroid plexus tumors (CPTs) are relatively uncommon tumors of the central nervous system, constituting approximately 5% of all pediatric brain tumors. Although squash cytology of CPT has been described in literature, shedding of tumor cells into cerebrospinal fluid (CSF) has rarely been described. We report two such cases of atypical choroid plexus papilloma in a 5-month-old male child and a 12-year-old female child, where characteristic cytomorphology of CPT was noted in the CSF.

Choroid Plexus Papilloma with Chondroma: Case Report

Neurosurgery ◽  
1986 ◽  
Vol 18 (6) ◽  
pp. 781-783 ◽  
Author(s):  
Jorge Salazar ◽  
Jesùs Vaquero ◽  
Ignacio F. Aranda ◽  
Josefa Menèndez ◽  
Dolores M. Jimenez ◽  
...  
Keyword(s):  
Choroid Plexus ◽  
Benign Tumor ◽  
Histopathological Examination ◽  
Choroid Plexus Papilloma ◽  
Epileptic Seizures ◽  
Intracranial Tumor ◽  
Review Of The Literature ◽  
Total Removal ◽  
The Right ◽  
Plexus Papilloma

Abstract The authors report the successful total removal of a rare intracranial tumor in the right lateral ventricle of a 15-year-old girl with epileptic seizures. Histopathological examination showed a benign tumor formed by mature cartilage and choroid plexus papilloma. From our review of the literature, a mixed tumor with these histological features has not been reported previously in this location. The diagnosis, surgical approach, etiology, and prognosis of this lesion are discussed.

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