High recurrence rate of the middle ear cholesteatoma requires regular postoperative follow-up. This study evaluated data from the patients investigated with DW MRI to ascertain (1) the strength of the technique in detecting primary, and residual recurrent cholesteatoma, and (2) its accuracy in differentiating cholesteatoma from postoperative tissue changes. The diagnostic accuracy of two different DW imaging (EPI and non-EPI) techniques was evaluated. The data have been collected prospectively from 33 consecutive patients with either primary cholesteatoma, or with suspicious symptoms for potential cholesteatoma recurrence. The findings from non-EPI (HASTE) DW MR and EPI DW MR images were blindly compared with those obtained during a primary or secondary surgery. Preoperative non-EPI (HASTE) DWI pointed to a cholesteatoma in 25 out of 33 patients. In this subgroup, cholesteatoma were confirmed also by the surgery. In five cases, the non-EPI (HASTE) DWI did not show a cholesteatoma in the temporal bone, which agreed with the surgical findings. Three misclassifications were made by non-EPI (HASTE) DWI, all in the subgroup of patients indicated for primary surgery. The resulting pooled sensitivity of non-EPI (HASTE) DW imaging for diagnosing cholesteatoma in our study amounted to 96.15% (95% confidence interval (CI) 80.36-99.9), specificity was 71.43% (95% CI 29.04-96.33). Positive predictive value was 92.59% (95% CI 75.71-99.09) and negative predictive value 83.33% (95% CI 35.88-99.58). In conclusion, we recommend the non-EPI (HASTE) DW MRI as a valid method for diagnosing cholesteatoma and follow-up after cholesteatoma surgery.
A 56-year-old male with arterial hypertension sought for medical help for a sudden unilateral swelling of the oral tongue and changed quality of speech. An ENT examination revealed a lesion of the left hypoglossal nerve. Neurological examinations including brain imaging showed negative results. The MRI of the neck only suggested, the angiography confirmed internal carotid aneurysm in the extracranial portion causing pressure on the hypoglossal nerve. The aneurysm was treated with a flow diverter, which reroutes the blood flow and thus embolises the aneurysm. The aneurysm shrunk, its mass effect disappeared and the function of the nerve fully recovered. Keywords: case report – hypoglossal nerve – a. carotis interna – sudden appeared lesion
Residual cholesteatoma results from an incomplete surgical removal of the cholesteatoma matrix. A variety of surgical procedures are used to remove cholesteatomas with varying success rates. In extensive cholesteatomas with minimal possibility of conductive system reconstruction, subtotal petrosectomy with blind sac closure is an effective surgical procedure. Diffusion-weighted magnetic resonance imaging (DWI) and ADC maps are used in the diagnosis of recurrent cholesteatoma. We present the case of a 40-year-old man, who repeatedly underwent revision surgeries for extensive cholesteatoma recidivism. An early postoperative DWI in the first days after the revision intervention did not show residual cholesteatoma. Surprisingly, a follow-up DWI detected the presence of cholesteatoma a few months later. The goal of this paper is to open the discussion on early postoperative DW MRI. Key words recidivism – residual and recurrent cholesteatoma – DWI – ADC map – subtotal petrosectomy – blind sac closure
Summary Erdheim-Chester disease (ECD) belongs to the malignant polyostotic sclerotic forms of non-Langerhans histiocytosis. During abnormal prolipheration of pathologic histiocytes (foam cells), involved structures become hypertrophic with increased density followed by scarring. Mostly the diaphysis and metaphysis of long bones of lower limbs with typical pain are involved. According to the WHO, the disease is classified as histiocytic neoplasia. We refer on a 74-year-old female patient with expansive process in the region of upper clivus and sphenoidal bone on the right side. Histological testing confirmed this very rare disease that affects about 600 patients over the world. Key words Erdheim-Chester – foamy histiocytes – sclerosis – fibrosis
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