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Nasal reconstruction presents the facial plastic surgeon with a complex problem given its functional and aesthetic importance. The dorsal nasal flap is a composite rotational flap of the glabella and nasal dorsum that can be used for nasal dorsum and tip defects of medium to large sizes. Given its composite nature, this flap can be split into its constituent parts-the epidermis and dermis and the subcutaneous tissue and superficial musculoaponeurotic system-without flap loss. This case series describes this technique and various potential applications within nasal reconstruction., Competing Interests: None declared., (Thieme. All rights reserved.)

Introduction: The posterior cervical triangle houses an important nodal basin in the spread of several cancers in the head and neck, particularly cutaneous malignancies of the scalp. A safe and effective Level V neck dissection necessitates thorough understanding of the neurovascular structures housed within the region. Conventional 2D anatomical representations offer insights into the named structures, but fall short in illustrating the spatial relationships crucial in surgery. Here, we aim to develop an anatomically-precise 3D virtual model of the posterior cervical triangle and its constituent structures., Methods: Musculature and neurovasculature were segmented from the computerized tomography (CT) angiogram of a healthy 29-year-old female. Literature review of cadaveric studies was performed to identify the most common variants, relevant surgical relationships, and usual dimensions of structures contained in the model. Structures unable to be visualized on imaging were created de novo using data obtained in the literature review. A medical illustrator then used this data to develop a 3D anatomical model using ZBrush., Results: The musculature (sternocleidomastoid, trapezius, omohyoid, scalenes, erector spinae, and transversospinalis muscles) and neurovasculature (spinal accessory nerve, phrenic nerve, vertebral artery, subclavian artery, and brachial plexus) were characterized through literature review. Musculature and vasculature were segmented from CT angiography while neural structures were created de novo. Both radiographic and anatomic data were used to inform the creation of a 3D model, which will be uploaded to an online database for open access viewing., Conclusions: A dynamic understanding of the spatial relationships existing among structures housed within the posterior triangle of the neck is imperative when operating in the region. The development of an accurate 3D anatomical model of such structures based upon predominant variants found in the literature will supplement the education of practicing and aspiring head and neck surgeons., (Copyright© South Dakota State Medical Association.)

Epistaxis is a common otolaryngologic complaint experienced by 60 percent of the U.S. population and can be the result of either local or systemic disturbance. Most nosebleeds arise from an anastomotic region along the anterior nasal septum known as Kiesselbach's plexus. However, roughly ten percent of nosebleeds originate posteriorly from the sphenopalatine branch of the maxillary artery. Posterior nosebleeds can be more difficult to control and are frequently associated with systemic derangement. Patients presenting with a nosebleed should first be assessed for airway patency and hemodynamic stability. Once the patient is confirmed to be acutely stable, pre-existing clots should be cleared from the nasal cavity and the nasal alae should be compressed against the septum for ten to fifteen minutes. Application of a topical vasoconstricting agent can also be considered at this time. If the nosebleed persists and the location of the bleed can be visualized, chemical or electrical cautery can be used. If the site of the bleed cannot be identified, nasal packing materials in the form of lubricant-impregnated ribbon gauze or readymade nasal packing devices can be placed to tamponade the bleed. Following failure of these conservative treatment modalities, otolaryngologist consultation should be sought. Next steps in management may include arterial ligation or embolization., (Copyright© South Dakota State Medical Association.)