Clinical-Medical Image - International Journal of Clinical & Medical Images (2022) Volume 9, Issue 5
Author(s): Abdelilah Drissi*, A Maniani, Habibchorfa Sara, Abir Lemrabet, R Saouab En-Naouali, El Fenni and Issam En-Nafaa
Received: 04 May 2022, Manuscript No. ijcmi-22-65950; Editor assigned: 06 May 2022, 2022, PreQC No. P-65950; Reviewed: 17 May 2022, QC No. Q-65950; Revised: 19 May 2022, Manuscript No. R-65950; Published: 27 May 2022, DOI: 10.4172/2376-0249.1000827
Our case is about a 40-year-old male who consults in an emergency for right monocular blindness. A cerebral CT was performed who shows a right intraocular mass spontaneously hyperdense. Besides, an orbital MRI with and without contrast was performed who objectified an intraocular choroid mass of the temporal left quadrant of the right eye. Who appears as high intense on T1-weighted (A) and T1 Fatsat (B), low intensity on T2-weighted image (C), with an enhancement on a post-contrast characteristic of a choroidal melanoma (D) associated with a choroidal detachment (Figure 1).
The Choroidal melanoma is a malignant tumor of the choroid and the most common primary intraocular tumor in adults. Its incidence is estimated at 6 cases per million per year with a predominance of the non-European white race. Clinically CM cause: vision loss, light flash. Ophthalmoscopic examination shows a pigmented mushroom-shaped mass, Fluorescein angiography objective a hyper fluorescent lesion, Doppler ultrasound shows a hyper vascularized echogenic mass. CT often identifies a hyperdense lesion with post-contrast enhancement, MRI is the most sensitive exam the tumour is characteristically hyperintense on T1 and hypointense on T2 due to the paramagnetic properties of melanin and exhibits a variable enhancement according to the degree of malignancy. Treatment includes radiotherapy, laser photocoagulation, local tumor resection, or even an enucleating [1-4].
Three differential diagnoses:
• Benign nevi
• Choroidal hemangiomas
• Choroidal metastases
Keywords: Choroidal melanoma; Malignant tumor; MRI
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