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Solitary adult xanthogranuloma in external auditory canal: Cyto-histopathological correlation of an uncommon entity at an uncommon site.
Diagn Cytopathol
July 2020
Department of Pathology, Dr Baba Saheb Ambedkar Hospital and Medical College, Rohini, Delhi, India.
Juvenile xanthogranulomas (JXG) are the most common type of self-limiting non-Langerhans cell histiocytosis (LCH) usually presenting in infancy and early childhood. Clinically, they present as solitary to multiple rounded cutaneous nodules which resolve over time. Adult type xanthogranulomas (AXG), though histologically similar to JXG, are usually single and do not regress spontaneously.
View Article and Find Full Text PDFBenign Solitary Fibrous Histiocytoma of Xanthomatous Subtype of the Perilimbal Conjunctiva and Adjacent Sclera in a Youth.
Ocul Oncol Pathol
November 2018
Department of Ophthalmology, University of Ottawa, The Ottawa Hospital, Ottawa, Ontario, Canada.
Aims: To report the clinical and pathological features of a benign fibrous histiocytoma of the xanthomatous subtype in the perilimbal conjunctiva and adjacent sclera in a youth.
Methods: An 11-year-old Caucasian boy presented with a yellowish dome-shaped conjunctival mass abutting the inferotemporal limbus of the left eye. The tumor measured 4 mm in its maximum diameter.
Ossified Intracranial Meningiomas: Description of the First Series of Cases and Review of the Literature.
World Neurosurg
October 2016
Neurosurgical Clinic, Department of Neuroscience, University of Messina School of Medicine, Messina, Italy.
Background: Metaplastic meningiomas are characterized by mesenchymal differentiation with formation of bone, cartilage, fat, or xanthomatous elements. However the presence of extensive areas of ossification is rare in meningiomas. In addition, intracranial location of ossified meningiomas is uncommon.
View Article and Find Full Text PDFMeningothelial meningioma in a Malayan sun bear (Helarctos malayanus).
J Vet Diagn Invest
September 2013
1Chen-Hsuan Liu, Graduate Institute of Molecular and Comparative Pathobiology, School of Veterinary Medicine, National Taiwan University, No. 1 Section 4, Roosevelt Road, Taipei 106, Taiwan.
A 24-year-old, spayed female Malayan sun bear (Helarctos malayanus) in the Taipei Zoo (Taipei, Taiwan) showed clinical signs of slowly progressive anorexia, dullness, compulsive pacing, and circling. The animal subsequently developed acute severe stupor and persistent recumbency. Postcontrast study of computed tomography revealed a spheroid, extra-axial mass with strong but heterogeneous hyperattenuation in the left temporal lobe of the cerebrum.
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