Results 1 to 10 of about 59,605 (164)

A Rare Case of Concurrent Intraventricular Meningioma and Choroid Plexus Papilloma: A Case Report [PDF]

Medicina
This case presents an unusual combination between an intraventricular meningioma and a choroid plexus papilloma. Intraventricular meningiomas are rare intraventricular tumors presenting with symptoms of hydrocephalus, headache, and neurological deficits.
Daniel Markov, Kristian Bechev, Usman Khalid, Vladimir Aleksiev, Galabin Markov, Elena Poryazova   +5 more
doaj   +3 more sources

Endoscopic Excision of Third Ventricle Choroid Plexus Papilloma

Indian Journal of Neurosurgery, 2023
Choroid plexus papilloma is a rare intraventricular tumor in children. Its management poses a challenge. Here we describe such a case of third ventricular choroid plexus papilloma and its endoscopic excision through a single burr hole. A 1-year-old child
Lavlesh Rathore, Debabrata Sahana, Sanjeev Kumar, Rajiv K. Sahu   +3 more
doaj   +2 more sources

Reduced folate receptor alpha (FOLR1) protein expression in fallopian tubes from premenopausal women: implications for the FOLR1 CDx assay for mirvetuximab-soravtansine therapy. [PDF]

J Pathol Clin Res
Abstract Mirvetuximab‐soravtansine (MIRV‐S) is an antibody‐drug conjugate targeting folate receptor alpha (FOLR1). MIRV‐S is approved for the treatment of FOLR1‐positive, platinum‐resistant ovarian carcinoma. Patient eligibility is determined by immunohistochemistry (IHC) using a companion diagnostic (CDx) assay (FOLR1‐2.1, Ventana).
Nasdala A, Kandt LD, Radner M, Schaumann N, Gronewold M, Hillmann P, Christgen H, Hachenberg J, Kuehnle E, Hartmann C, Christgen M.   +10 more
europepmc   +2 more sources

Tumor-type-specific expression of TTF-1 in primary central nervous system tumors classified by the 2021 WHO criteria. [PDF]

J Pathol Clin Res
Abstract Thyroid transcription factor‐1 (TTF‐1) is a widely used immunohistochemical marker for tumors of thyroid and pulmonary origin; however, its expression profile and diagnostic relevance in primary central nervous system (CNS) tumors remain incompletely characterized, particularly following the revisions in the 2021 WHO Classification of CNS ...
Xu L, Ren HJ, Gu J, Shan BW, Ren T, Liu CH, Cai CX, Zhang XY, Yu JH.   +8 more
europepmc   +2 more sources

Leptomeningeal Dissemination in Choroid Plexus Tumors: Magnetic Resonance Imaging Appearance and Risk Factors [PDF]

Children
Background: Intracranial choroid plexus tumors (CPT) are rare and primarily affect young children. Leptomeningeal dissemination (LMD) has been reported not only in high-grade choroid plexus carcinoma (CPC) but also in lower histological grades; however ...
Daniel Nunes do Espirito Santo, Monika Warmuth-Metz, Camelia-Maria Monoranu, Martin Hasselblatt, Christian Thomas, Torsten Pietsch, Jürgen Krauß, Tilmann Schweitzer, Brigitte Bison, Matthias Eyrich, Uwe Kordes, Denise Obrecht-Sturm, Mirko Pham, Annika Quenzer   +13 more
doaj   +2 more sources

Identifying Angiogenic Factors in Pediatric Choroid Plexus Papillomas [PDF]

NeuroSci
(1) Background: Choroid plexus papillomas (CPPs) are rare brain tumors that tend to occur in very young children. Mechanisms of CPP development remain unelucidated. Separately, the process of angiogenesis has been implicated in other primary brain tumors.
Nurfarhanah Bte Syed Sulaiman, Sofiah M. Y. Sng, Khurshid Z. Merchant, Lee Ping Ng, David C. Y. Low, Wan Tew Seow, Sharon Y. Y. Low   +6 more
doaj   +2 more sources

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

Brazilian Journal of Veterinary Pathology, 2021
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).
Pedro Enrique Navas-Suárez, Ticiana Brasil Ervedosa, Celso di Loreto, Rodrigo Albergaria Ressio, Isis Paixão de Jesus, Mariana Morgado Hereny da Silva, Mayra Hespanhol Frediani, Juliana Mariotti Guerra, Natália C.C. de A. Fernandes   +8 more
doaj   +1 more source

Third ventricle choroid plexus papilloma: 2 cases

Radiology Case Reports, 2020
The third ventricle is an uncommon location for choroid plexus papillomas. In adults, these tumors most commonly occur in the fourth ventricle. In children, they are more commonly found in the lateral ventricles.
Cory M. Pfeifer, MD, MS, Kevin Wong, DO, Rithvik Malireddy, Dane Van Tassel, MD, Daniel L. Veltkamp, MD, Patricia Cornejo, MD   +5 more
doaj   +1 more source

Telovelar approach for microsurgical resection of an unusually located choroid plexus papilloma in the luschka foramen of an infant – Case report and review of literature

Interdisciplinary Neurosurgery, 2020
Background: Choroid plexus tumors are rare intraventricular tumors. Most of these tumors are benign choroid plexus papillomas. Most common location of these tumors in pediatric population is lateral ventricle although posterior fossa located tumors are ...
Amin Tavallaii, Ehsan Keykhosravi, Hamid Rezaee   +2 more
doaj   +1 more source

An extremely rare case of choroid plexus carcinoma in the third ventricle of an infant – Case report and review of the literature

Interdisciplinary Neurosurgery, 2020
Background: Choroid plexus tumors are rare intraventricular tumors. Most of these tumors are benign choroid plexus papillomas. Choroid plexus carcinoma is the most malignant choroid plexus tumor and constitutes a small percentage of these tumors.
Amin Tavallaii, Ehsan Keykhosravi, Hamid Rezaee, Mohsen Khamoushi   +3 more
doaj   +1 more source