Selective neck dissection: CT and MR imaging findings.
نویسندگان
چکیده
BACKGROUND AND PURPOSE Selective neck dissection (SND) has become a common surgical procedure for selectively treating known or potential metastatic nodal disease from head and neck cancer while preserving functional structures. The purpose of this article is to describe the expected CT and MR findings after SND. METHODS CT (26/27) or MR images (1/27) from 27 consecutive patients treated with SND for either staging or nodal control of head and neck malignancy were retrospectively reviewed by two experienced head and neck radiologists. One patient had bilateral SND. The quantity of deep cervical fat was subjectively assessed, as was patency of the ipsilateral internal jugular vein (IJV) and asymmetry in size and contour of the sternocleidomastoid (SCM), trapezius, and infrahyoid strap muscles. The presence of the submandibular gland was noted. RESULTS Twenty-seven of 28 necks had marked decrease in fat beneath the SCM muscle. This resulted in the muscle directly abutting the paraspinal muscles in most cases. The SCM muscle contour and size was asymmetric or flattened and atrophic in 16/28 necks. Atrophy of the infrahyoid strap muscles was seen in 8/28 necks. Six of 28 had no detectable IJV, and it was presumably thrombosed. Submandibular gland was not present in 17/28 cases. CONCLUSION The imaging findings after SND are characteristic and reflect the type of surgery performed. If level I nodes are removed, the submandibular gland is absent. Marked decrease in deep cervical fat is common. Changes in and around the SCM muscle are routinely seen and include posterior and medial displacement of the muscle, distortion and flattening of the muscle, or atrophy, despite surgical preservation of spinal accessory nerve. Finally, although the IJV is not resected in SND, nonvisualization of the vein on postoperative images may reflect thrombosis.
منابع مشابه
CT and MR findings of denervated tongue after radical neck dissection.
PURPOSE To describe the CT and MR findings in the denervated tongue after a radical neck dissection. METHODS We retrospectively evaluated the radiologic findings in seven patients who had hypoglossal paralysis following radical neck dissection. None of the patients had clinical or radiologic evidence of tumor recurrence. RESULTS The side of the tongue operated on showed low density on CT sc...
متن کاملThe role of MR imaging in detecting nodal disease in thyroidectomy patients with rising thyroglobulin levels.
BACKGROUND AND PURPOSE One of the dilemmas facing clinicians treating patients with thyroid cancer is the evaluation of postthyroidectomy patients with rising serum thyroglobulin levels and indeterminate or normal findings on neck sonography. In this study, we examine the role of MR imaging in this subgroup of patients. MATERIALS AND METHODS We retrospectively reviewed MR images of patients w...
متن کاملAccuracy and Reliability of Computed Tomography and Magnetic Resonance Imaging Compared to True Anatomic Femoral Torsion
BACKGROUND Abnormal torsion of the femur is correlated to lower extremity pathologies. Although computed tomography (CT) scan is the gold standard torsional measurement, magnetic resonance imaging (MRI) is proposed as a viable alternative. Our aim was to determine the accuracy and consistency of MRI and CT femur rotational studies based on 4 described protocols. METHODS Twelve cadaveric femor...
متن کاملComparison of multidetector CT angiography and MR imaging of cervical artery dissection.
BACKGROUND AND PURPOSE Conventional angiography has been historically considered the gold standard for the diagnosis of cervical artery dissection, but MR imaging/MR angiography (MRA) and CT/CT angiography (CTA) are commonly used noninvasive alternatives. The goal of this study was to compare the ability of multidetector CT/CTA and MR imaging/MRA to detect common imaging findings of dissection....
متن کاملValue of MR and CT Imaging for Assessment of Internal Carotid Artery Encasement in Head and Neck Squamous Cell Carcinoma
Objective. This study was conducted to assess the value of CT and MR imaging in the preoperative evaluation of ICA encasement. Methods. Based upon three patient groups this study was performed. Retrospective analysis of 260 neck dissection reports from 2001 to 2010 was performed to determine unexpected peroperative-diagnosed encasement. Two experienced head and neck radiologists reviewed 12 sca...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- AJNR. American journal of neuroradiology
دوره 26 5 شماره
صفحات -
تاریخ انتشار 2005