CAROTID ARTERY CAVERNOUS SINUS FISTULA
\kəɹˈɒtɪd ˈɑːtəɹi kˈavənəs sˈa͡ɪnəs fˈɪstjʊlə], \kəɹˈɒtɪd ˈɑːtəɹi kˈavənəs sˈaɪnəs fˈɪstjʊlə], \k_ə_ɹ_ˈɒ_t_ɪ_d ˈɑː_t_ə_ɹ_i k_ˈa_v_ə_n_ə_s s_ˈaɪ_n_ə_s f_ˈɪ_s_t_j_ʊ_l_ə]\
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Laceration of the intracavernous portion of the carotid artery or one of its intracavernous branches resulting in a direct communication between the internal carotid artery and the cavernous sinus. Clinically, this produces a pulsatile exophthalamus and a marked limitation of extraocular motion in the affected eye. CRANIOCEREBRAL TRAUMA, especially basilar skull fractures (SKULL FRACTURE, BASILAR) is the most common cause of this condition, but it may also occur spontaneously or in association with diseases featuring defective connective tissue, such as EHLERS-DANLOS SYNDROME. (Adams et al., Principles of Neurology, 6th ed, p877)
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