[Pseudotumor in the parotid region].
Tophaceous pseudogout is a rare form of calcium pyrophosphate dihydrate (CPPD) crystal deposition disease. Half of the 31 reported cases of tophaceous pseudogout are in the head and neck region. This patient presented with a parotid tumour, that was initially suspected to be malignant based on radiology and cytology. Operation disclosed a tumour progressing to the base of the skull, histological examination showed inflammatory cells, macrophages, metaplastic chondroid cells and giant cells of foreign-body-type. X-ray diffraction revealed two crystal forms of CPPD.
Olin
H B
HB
H:S Rigshospitalet, øre-, naese- og halsklinikken.
Pedersen
K
K
Hansen
H
H
Poulsen
F W
FW
D002805:Chondrocalcinosis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D010307:Parotid Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed