caa a22 4500 388084464 CHVBK 20180307125226.0 cr unu---uuuuu 161130e199904 xx s 000 0 eng 10.1017/S0022215100144044 doi S0022215100144044 pii (NATIONALLICENCE)cambridge-10.1017/S0022215100144044 Chondromyxoid fibroma of skull base: a tumour prone to local recurrence [Elektronische Daten] Chondromyxoid fibroma of the skull base is extremely uncommon. Sometimes involvement of the nasal cavity may occur and the patients may present with nasal symptoms. The biological behaviour of this tumour has not been well studied, primarily because of the limited number of reported cases and the short duration of followup. We report a histologically confirmed case of chondromyxoid fibroma of the skull base that recurred repeatedly over a 10-year period after the initial operation. Histologically it showed identical morphology to the original tumour with no evidence of histological progression or dedifferentiation. Ultrastructurally, the spindle tumour cells in the fibromyxoid area showed dual chondroblastic and fibroblastic differentiation, suggesting that these spindle fibroblastic cells and the better differentiated chondroid cells were of the same cell type with different histological morphology. Copyright © JLO (1984) Limited 1999 Chondromyxoid fibroma nationallicence Skull base nationallicence Nasal cavity nationallicence Electron microscopy nationallicence Shek T. W. H. Department of Pathology, University of Hong Kong, Queen Mary Hospital, Hong Kong. Peh W. C. G. Department of Diagnostic Radiology, University of Hong Kong, Queen Mary Hospital, Hong Kong. Leung G. Department of Surgery, University of Hong Kong, Queen Mary Hospital, Hong Kong. The Journal of Laryngology & Otology Cambridge University Press 113/4(1999-04), 380-385 0022-2151 113:4<380 1999 113 JLO https://doi.org/10.1017/S0022215100144044 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022215100144044 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shek T. W. H. Department of Pathology, University of Hong Kong, Queen Mary Hospital, Hong Kong NATIONALLICENCE 700 1- Peh W. C. G. Department of Diagnostic Radiology, University of Hong Kong, Queen Mary Hospital, Hong Kong NATIONALLICENCE 700 1- Leung G. Department of Surgery, University of Hong Kong, Queen Mary Hospital, Hong Kong NATIONALLICENCE 773 0- The Journal of Laryngology & Otology Cambridge University Press 113/4(1999-04), 380-385 0022-2151 113:4<380 1999 113 JLO CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge