Concurrent medullary and papillary carcinoma of thyroid.

Simultaneous occurrence of papillary thyroid carcinoma (PTC) and medullary thyroid carcinoma (MTC) in the same thyroid gland is a rare condition. These tumors derive from different cells; PTC originates from follicular cells whereas MTC originates from parafollicular cells. Because of this, the treatment of these tumors also differs.

The effect of duration of merocel in glove finger with tetracaine solution on septoplasty morbidity.

Objective: We aimed to decrease the postseptoplasty morbidities depending on nasal packing by using Merocel within glove finger moistened with tetracaine 0.25% solution.

Study Design: The study was designed as a randomized prospective study.

Using dynamic maneuvers in the computed tomography/magnetic resonance assessment of lesions of the head and neck.

Despite advances in technology, the radiologic assessment of certain head and neck lesions may still pose difficulties because of the complex anatomy of this region, the small and mobile structures that this region harbors, and the apposition of mucosal surfaces in the neutral position. Certain maneuvers have been described in the literature to overcome these difficulties. We review the use of the Valsalva and the modified Valsalva maneuver, the puffed-cheek technique, phonation, and inspiration, with possible applications in head and neck imaging.

Dynamic computed tomographic evaluation of vocal cord mobility in patients with larynx cancer.

Objective: To evaluate the accuracy of dynamic laryngeal computed tomography (DLCT) for the detection of vocal cord mobility in larynx cancer.

Methods: Vocal cord mobility of 44 patients (36 men; age range, 49-81 years) with larynx cancer was examined; 13 patients were excluded (owing to poor image quality or bilateral vocal cord involvement), and vocal cord mobility was evaluated for the remaining 31 patients qualitatively and quantitatively with dynamic laryngeal computed tomography during phonation, inspiration, and Valsalva maneuver phase.

Results: The mobile cords were laterally positioned in a straight configuration on inspiration phase.

Functional imaging of larynx via 256-Slice Multi-Detector Computed Tomography in patients with laryngeal tumors: a faster, better and more reliable pre-therapeutic evaluation.

Objective: To determine the clinical utility of using dynamic maneuvers during imaging of larynx via 256-Slice Multi-Detector Computed Tomography in the pre-therapeutic evaluation of laryngeal tumors.

Materials And Methods: A total of 27 patients (7 women, 20 men; aged 53-76 years) diagnosed with laryngeal squamous cell carcinoma were evaluated pre-therapeutically via contrast enhanced axial CT scans during consecutive phases of phonation (PP), inspiration (IP) and Valsalva maneuver (VP).

Results: In 2 of 5 patients diagnosed with T1a glottic tumor, scans obtained during VP and PP were normal while the CT scans obtained during IP clearly showed a mass.

Two synchronous glomus tumors simulating a single mass: glomus vagale and glomus caroticum.

Glomus tumors, especially with some definitive MR imaging features, are diagnosed easily. However, when two glomus tumors are suspected in one single mass, careful evaluation is necessary. We report one patient with two synchronous glomus tumors, ipsilateral glomus tumor of the carotid body and glomus vagale on the right neck, simulating a single mass.

Microscopic thyroidectomy: a prospective controlled trial.

The purpose of this prospective study was to evaluate microsurgical thyroidectomy by comparing it with traditional thyroidectomy. Before surgery, patients were assigned either to the microscopic thyroidectomy group (MT group), with the use of the surgical microscope, or the traditional thyroidectomy group (TT group), without the use of visual magnification. Outcome measures were operative time, intraoperative bleeding and complication rates including injury to the recurrent laryngeal nerve (RLN), the external branch of the superior laryngeal nerve (EBSLN) or the parathyroid glands.

Incidence of occult thyroid carcinoma metastases in lateral cervical cysts.

Purpose: To establish the incidence of thyroid carcinoma metastasis in adult patients presenting with apparently benign cervical cysts. The authors report their experience with four cases of papillary thyroid carcinoma who present with a lateral cervical cystic mass and no palpable disease in the thyroid gland.

Materials And Methods: A retrospective review of patients undergoing surgery for solitary cervical cysts in our clinic from 1994 to 2002 was performed.

A laryngeal foreign body misdiagnosed as asthma bronchiale.

Laryngotracheal foreign bodies, although less common than bronchial foreign bodies, are potentially more dangerous. We report a 10-year-old girl with Down syndrome with asthma bronchiale symptoms, which was later found to be the result of a thin bone lamella impacted in her larynx. There was no clear history of foreign body aspiration.

Oncocytic carcinoma of the parotid gland: report of a new case.

Prior to 2003, only 39 cases of oncocytic carcinoma of salivary gland origin had been reported in the English-language literature. We report a new case, which occurred in a 48-year-old woman whose disease had metastasized to regional lymph nodes. She was treated by radical parotidectomy, with sacrifice of the facial nerve, and radical neck dissection.

Level of vocal folds as projected on the exterior thyroid cartilage.

Objective: This study aims to identify the level of the vocal folds as projected on the exterior thyroid cartilage.

Study Design: Anatomic study of human cadaver larynges.

Methods: The study includes 83 fresh larynges harvested at autopsy from 62 male and 21 female cadavers.

The effect of topical fluticasone on nasal nitric oxide levels in a patient with allergic rhinitis.

Nitric oxide (NO) in exhaled breath is produced primarily by the upper respiratory airway mucosa. The nasal output of this gas is increased in patients with allergic rhinitis. We performed a study on a 41-year-old nonsmoking male volunteer with allergic rhinitis to investigate the effect of fluticasone nasal spray on nasal NO output (VNO).

Accuracy of computerized tomography in deep neck infections in the pediatric population.

Objectives: Computerized tomography (CT) is used widely to diagnose deep neck infections (DNIs), and, generally, the decision of surgical intervention is based on findings of a CT study. This study examines the accuracy of CT in differentiating abscess versus cellulitis in DNIs (lateral pharyngeal and retropharyngeal).

Study Design: This is a retrospective chart review study with re-evaluation of the CT scans by a blinded observer.

[Nitric oxide and the upper airways: recent discoveries].

Nitric oxide (NO) is produced from L-arginine in mammalian tissues. Nitric oxide synthase (NOS) catalyzes this reaction in human tissues. It has been shown that NO serves as an important signaling molecule in the cardiovascular system and is responsible for vasoregulation.

Synovial sarcoma arising from the hypopharynx: a case report.

Synovial sarcoma is a relatively rare soft tissue tumor. About 3 to 10% of cases arise in the head and neck, with the majority in the parapharyngeal region. We hereby report a 22-year-old male patient with synovial sarcoma confined to the hypopharynx.

A method for off-line nasal nitric oxide measurement.

We conducted a study to test the accuracy of an immediate and delayed off-line technique for measuring nasal nitric oxide (NO) by comparing it with on-line measurements. With the assistance of one volunteer, we obtained these measurements during 30 sessions over a period of 2 months. Off-line measurements were made immediately following the acquisition of NO samples and 1, 2, and 4 hours later.

Variations of nasal nitric oxide in a subject with allergic rhinitis: a longitudinal study.

Purpose: Nitric oxide (NO) in the exhaled air is mainly produced by the upper respiratory airway mucosa, and the output of NO has been found to differ from normal in sinonasal disease. In allergic rhinitis (AR) nasal NO output (V(NO)) has been reported to increase compared with healthy individuals. The purpose of this study was to observe daily variations in V(NO) in a subject with AR and to investigate the effect of environmental factors on V(NO).