Purpose: To explore the use of fluid-attenuated inversion recovery (FLAIR) and diffusion-weighted echo planar imaging sequences in imaging of the intracranial epidermoid and arachnoid cysts and assess the efficiency of those sequences in differentiation of epidermoid cysts from arachnoid cysts.
Materials And Methods: This study was performed prospectively by using two different MR devices in 24 patients (12 epidermoid cysts, 12 arachnoid cysts). T1-weighted spin echo, T2-weighted fast spin echo, FLAIR and diffusion-weighted echo planar imaging sequences were used. Lesions were evaluated qualitatively and quantitatively. In qualitative evaluation, the signal intensity of the lesions were compared with cerebral spinal flow. Quantitative evaluation was made from the diffusion-weighted images by measuring values of apparent diffusion coefficient (ADC) from the cystic spaces and cerebral white matters. In statistic analyses, Mann-Whitney U test was used.
Results: Arachnoid cysts had the same intensity with cerebral spinal flow in all sequences. Mean ADC value was 3.41 +/- 0.17 x 10(-3) mm2/sn. All epidermoid cysts on diffusion-weighted trace images were more hyperintense than brain parenchyma. The mean ADC value of the epidermoid cysts was 1.15 +/- 10(-3) mm2/sn. The ADC values of the epidermoid cysts were lower than the arachnoid cysts (p < 0.001), but were higher than the cerebral white matter (p < 0.01).
Conclusion: FLAIR sequences were superior to conventional sequences in imaging of epidermoid cysts and in differentiation of epidermoid cysts from arachnoid cysts. It was also shown that diffusion-weighted trace imaging and measurement of ADC values might be used as problem solving tools. Furthermore, those sequences may be a guide to demonstrate postoperative residual lesions.
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Am J Case Rep
December 2024
Department of Pediatric Otolaryngology, Head and Neck Surgery, Chair of Pediatric Surgery, Medical University of Silesia (SUM), Katowice, Poland.
BACKGROUND Ranulas are typical causes of sublingual cysts in children. However, our case was histopathologically confirmed to be a dermoid cyst. Epidermoid and dermoid cysts of the floor of the mouth account for <0.
View Article and Find Full Text PDFInt J Surg Case Rep
December 2024
Department of Obstetrics and Gynecology, College of Medicine, King Khalid University, Saudi Arabia. Electronic address:
Introduction And Importance: Female circumcision, also known as female genital mutilation/cutting (FGM/C), is a common practice in many Arab countries, including Egypt. One potential complication of FGM/C is the development of a clitoral epidermal inclusion cyst, which occurs when keratinized epithelial cells and sebaceous glands become incorporated into the circumcision scar line in the clitoral or labial area. The objective of this study is to present a rare case of a large clitoral epidermal inclusion cyst following FGM/C and to review the current practice of FGM/C in the Arab world, including Egypt, Sudan, and Saudi Arabia.
View Article and Find Full Text PDFJ Invest Dermatol
December 2024
Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Pathology, Yale University School of Medicine, New Haven, CT 06520, USA. Electronic address:
Neurosurgery
December 2024
Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA.
Background And Objectives: Intracranial epidermoid cysts are rare, slow-growing but highly recurrent tumors with incompletely understood symptoms, progression, complications, and outcomes. The aim of the study was to characterize the symptomatology, surgical management, and long-term outcomes of these tumors.
Methods: This single-center retrospective analysis identified patients with pathologically confirmed intracranial epidermoid cysts from 1989 to 2023.
Asian J Surg
December 2024
Department of Neurosurgery, People's Hospital of Gaozhou, Maoming, 525200, Guangdong Province, China. Electronic address:
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