Neck levels with contralateral drainage were level II (88%), III (25%), and IV (13%). In 11 patients (20%) with visible contralateral drainage, 14 draining areas (16 nodes median volume 0.50 cc, diameter 8.0 mm) were identified. Lymphatic drainage was successfully visualized in 54 patients (98%). We report on the incidence of contralateral drainage, the location of draining areas, and the size of underlying nodes. Lymph drainage patterns were visualized using planar scintigraphy and SPECT/CT after 4 h. ![]() Radiolabeled 99mTc-nanocolloid was injected in 4-5 depots around and in the primary tumor. Excluding the contralateral neck from elective irradiation will reduce radiation-induced toxicity and improve quality-of-life.įifty-five patients with lateralized cT1-3N0-2bM0 HNSCC not crossing the midline underwent LDM. We hypothesized that patients with a lateralized tumor without visible lymph drainage to the contralateral neck have an extremely low risk of contralateral involved nodes. Patients with lateralized HNSCC treated with radiotherapy routinely undergo bilateral ENI, despite the incidence of contralateral regional failure being relatively low even after unilateral ENI. To investigate the feasibility of lymph drainage mapping (LDM) using SPECT/CT to help select head and neck cancer (HNSCC) patients for unilateral elective neck irradiation (ENI). ![]() Most SLNs were visualized in neck levels II and III.įlexible endoscopy-guided tracer injection for SLN identification is a feasible and fast procedure in laryngeal and pharyngeal carcinoma patients. A total of 28 SLNs were identified which were all visualized on the early and late SPECT-CT. The median duration of the endoscopic procedure including tracer injection after biopsy taking was 7 min (range 4-16 min). ![]() Median number of tracer injections was 1 intratumoral and 3 peritumoral. Tracer injection and visualization of SLNs was successful in 15/16 (94%) patients. SPECT-CT scans were performed at two time points. Sixteen cT1-4N0-2M0 patients with laryngeal or pharyngeal carcinoma underwent intra- and peritumoral Tc-nanocolloid injections after topical anesthesia under endoscopic guidance. ![]() The aim of this study was to investigate the feasibility of flexible endoscopy-guided tracer injection for sentinel lymph node (SLN) identification in patients with laryngeal and pharyngeal carcinoma.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |