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Lipoma is a relatively common benign tumour occurring at sites of the body which are rich in adipose tissue. Due to sparsity of adipose tissue within the oral cavity, lipoma rarely presents in this region. Fibrolipoma of the tongue is a rare lesion. There are only 14 cases reported in the literature. An 85-year-old patient presented with a painless mass on the tongue interfering with eating. There were no risk factors for malignancy and no family history of malignant diseases. Although intraoperatively the lesion was locally infiltrative, histopathology revealed a rare benign fibrolipoma. Mainstay of treatment is surgical excision, but the lesion may pose a dilemma for Surgeons as difficulties associated with removal, due to the fibrous and adherent nature of the growth to surrounding tissue, may be mistaken for a cancerous growth., (Copyright© Authors.)

Background: Our study aims to determine the value of diffusion-weighted imaging (DWI) combined with conventional magnetic resonance imaging (MRI) in the diagnosis of thecomas/fibrothecomas and their differential diagnosis with malignant pelvic solid tumors., Methods: In total, 36 thecomas/fibrothecomas and 40 malignant pelvic solid tumors were included in our study. All patients underwent 1.5 T conventional MRI and DWI examinations except one patient with a fibrothecoma in whom DWI examination was not performed. The clinical features and characteristics of conventional MRI and DWI of these two groups were analyzed. Apparent diffusion coefficient (ADC) values were measured and compared between groups. Univariate analysis, multivariate logistic regression analysis, and the receiver operating characteristic curve were used for statistical analysis., Results: All the thecomas/fibrothecomas showed isointensity on T1 weighted imaging (T1WI) and 77.8% (28/36) lesions showed hypo- to isointensity on T2 weighted imaging (T2WI). After administration of contrast medium, 94.4% (34/36) tumors appeared as minor to mild enhancement. On DWI, they showed a diversity of low to very high signal intensity. All malignant pelvic masses manifested as hyperintensity on T2WI and 87.5% (35/40) tumors showed very high signal (grade 3) on DWI. Higher area under the curve (AUC) and specificity could be achieved by using the lowest ADC value than the mean ADC value. Multivariate logistic regression analysis showed that shape, signal intensity on T2WI, capsule, and the lowest ADC value were the important indicators in discriminating thecomas/fibrothecomas from malignant pelvic solid tumors., Conclusions: The combination of DWI and conventional MRI is of great value in the diagnosis of thecomas/fibrothecomas and their differential diagnosis with malignant pelvic solid tumors.

Chondromyxoid fibromas are benign tumors which are found most frequently in the metaphyses of long bones. They comprise less than 1% of primary bone neoplasms and display a hypermetabolic appearance on PET imaging. Oftentimes, they are misdiagnosed as chondrosarcomas and are excised due to concern for malignancy. We present a case of a condromyxoid fibroma originating from the second rib of a 15-year-old girl., (Copyright © 2013 Elsevier Inc. All rights reserved.)

In childhood, benign tumors are uncommon causes of exophtalmos. We report a case of intraorbital lipofibroma in an 11-year-old girl who presented with painless, progressive proptosis of the right eye over the preceding 6 months. Ultrasound had shown an extraconal intraorbital mass. Complete excision and pathologic examination were performed, revealing a lipofibroma with no signs of malignancy This case report is notable due to the rarity of the condition., (Published by Elsevier Masson SAS.)