[Chondroma of the petrous bone. A contribution to differential skull base tumor diagnosis].
BACKGROUND
Cartilaginous tumors of the mid-face and the skull base are rare.


METHODS
For the first time, a case report of a chondroma of the base of the ear in a 56-year-old woman is presented. In 1974 the patient developed a facial nerve paralysis while she was pregnant. Twenty-two years later the patient developed persistent headache and CT studies of the head were obtained, which showed an extensive tumorous lesion located at the base of the ear. A tumor was resected through an otoneurosurgical approach. The histological examination showed a chondroma.


CONCLUSIONS
Even the rare diagnosis of a chondroma should be considered for a differential diagnosis of skull base tumors.
Tisch
M
M
Abteilung Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie Bundeswehrkrankenhaus Ulm.
Hehl
K
K
Kraft
K
K
Kunz
U
U
Maier
H
H
D002812:Chondroma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D004428:Ear Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D005158:Facial Paralysis / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010579:Petrous Bone / Q000473:pathology / Q000601:surgery; D011247:Pregnancy; D019292:Skull Base Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed