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  • Title: A method of posterior fossa dural incision to minimize hemorrhage from the occipital sinus: the "mosquito" method.
    Author: Lee HC, Lee JY, Ryu SK, Lim JM, Chong S, Phi JH, Kim SK, Wang KC.
    Journal: Childs Nerv Syst; 2016 Dec; 32(12):2429-2431. PubMed ID: 27444295.
    Abstract:
    PURPOSE: The posterior fossa dural opening requires the ligation of the occipital sinus to gain successful exposure. However, there could be a prominent occipital sinus which is functioning as the main drainage route and is harboring the risk of unpredictable massive hemorrhage during the dural opening. We introduce a safe method of posterior fossa dural incision to minimize hemorrhage from the occipital sinus using four curved hemostat clamps. METHODS: For the dural incision at the midline part of the posterior cranial fossa, we used four curved hemostat clamps to occlude the prominent occipital sinus: one pair of clamps at the proximal part and the other pair at the distal part to occlude the occipital sinus. Dural incision was made between the two pairs of the curved hemostat clamps. RESULTS: By clamping of the sinus, it allows observation of possible brain swelling after occlusion of the occipital sinus as well as minimizes hemorrhage during incision of the midline dura of the posterior fossa. CONCLUSION: This method allows observation of brain swelling after occipital sinus occlusion and is an easy and safe incision of the midline dura minimizing hemorrhage in selected cases with a prominent occipital sinus.
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