To evaluate the value of HRCT imaging in middle ear cholesteatoma, we prospectively analysed the CT images in 28 surgically proven cases with cholesteatomas regarding main site of lesion, ossicular change, facial nerve exposure and fistula formation . The most common main site of lesion was the epitympanum (92.8%). The results of sensitivity, positive predictability, and accuracy by CT imagings were as follows: for ossicular involvement, 94.1%, 88.8%, and 86.2% in malleus, 96.0%, 88.8%, and 85.7% in incus, 81.2%, 81.2%, and 78.5% in stapes; for facial verve exposure, 66.6%, 57.1%, and 81.2%; for fistula formation, 100%, 75.0%, and 96.4%, respectively. In conclusion, the temporal bone HRCT imaging is an accurate preoperative method in detecting main lesion site, ossicular involvement, fistula formation. Because of the low sensitivity and positive predictability in detecting facial nerve exposure, it is necessary to correlate the HRCT images with the clinical status.
Cholesteatoma ; Cholesteatoma, Middle Ear* ; Ear, Middle* ; Facial Nerve ; Fistula ; Incus ; Malleus ; Methods ; Prospective Studies ; Stapes ; Temporal Bone* ; Tomography, X-Ray Computed*

Benign fibrous mesothelioma of the pleura is a relatively rare neoplasm originated from pleural mesothelial cell, often asymptomatic or presenting with a specifical sign. One of the main problems, concerns the preoperative differential diagnosis, mainly because it is difficult to differentiate between benign and malignant type. A 62-year old woman presented with recurrent chest pain. The chest radiography in a patient was suspected localized pleural mesothelioma. The chest computed tomography scan showed that mass like lesion of well marginated ovoid shape with homogenous attenuation on anterior-basal segment of right lower lobe. After resection of a pleural mass by thoracoscopic extirpation from right hemithorax, Localized benign fibrous mesothelioma of the pleura was confirmed by pathology and immunohisto-chemical staining. We report here one case of pleural benign fibrous mesothelioma with some considerations on its diagnosis and treatment.
Chest Pain ; Diagnosis ; Diagnosis, Differential ; Female ; Humans ; Mesothelioma ; Middle Aged ; Pathology ; Pleura* ; Radiography ; Solitary Fibrous Tumor, Pleural* ; Thorax