Supaporn Srirompotong

A randomized trial of the canalith repositioning procedure

Objective To compare the effectiveness and complications of our adaptation of the canalith repositioning procedure (CRP) with the expectation treatment for benign paroxysmal positional vertigo.

Tuberculosis in the upper aerodigestive tract and human immunodeficiency virus coinfections.

OBJECTIVE To describe the clinical manifestations of tuberculosis in the upper aerodigestive tract. DESIGN Retrospective chart analysis. SETTING Srinagarind Hospital, Department of Otolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand. METHODS A review of medical records of patients diagnosed with mycobacterial infection of the upper aerodigestive tract between January 1991 and December 2000. MAIN OUTCOME MEASURES Presenting symptoms, clinical findings, pathologic findings, pulmonary involvement, and outcome of treatment. RESULTS Forty-five patients presented with upper aerodigestive tract tuberculosis. The nasopharynx was involved in 23 patients, the larynx in 16, the tonsils in 6, and the soft palate in 1. One patient had tuberculous infections in both the nasopharynx and tonsils. The mean duration of symptoms before diagnosis was 2.1 months. The pathologic findings included caseous granuloma and/or positive acid-fast bacilli (AFB) in 39 cases and chronic granulomatous inflammation with negative AFB in 6 cases. Pulmonary tuberculosis was found in 19 of the 36 patients who underwent radiography. A positive serologic test for human immunodeficiency virus (HIV) infection was found in 4 of 26 patients. These 26 patients, who received a full course of treatment, responded well. CONCLUSION The most common site of tuberculosis in the head and neck involved the cervical lymph nodes and nasopharynx. Upper aerodigestive tract tuberculosis is difficult to differentiate from carcinoma; thus, tissue biopsy is necessary for a definite diagnosis. Chest radiography and screening for HIV infection are recommended in all patients with upper aerodigestive tract tuberculosis.

Movement of the tympanic membrane causing pulsatile tinnitus

Abstract Background: Movement of the tympanic membrane can be a cause of pulsatile tinnitus. There are many etiologies that cause movement of the tympanic membrane, including otogenic pneumocephalus. This is an uncommon presentation after head injury that may be missed as the diagnosis of the primary cause of the symptoms. Objective: To report a rare case of pulsatile tinnitus because of otogenic pneumocephalus. Methods: Case report from chart review with relevant investigations and treatment. Results: We describe the very interesting case of a patient who presented with pulsatile tinnitus because of otogenic pneumocephalus. On examination, we found a moving tympanic membrane. A CT scan revealed pneumocephalus in the right temporoparietal region that was continuous with the adjacent mastoid air cells. There was a transverse fracture through the mastoid process. A meticulous mastoidectomy with unroofing of the epitympanum was performed with widening of the aditus ad antrum. The mastoid cavity was closed without fat obliteration. After the operation, the pulsatile tinnitus ceased completely. Conclusion: Mastoidectomy and unroofing the epitympanum without fat obliteration is a very simple and effective option for the treatment of pulsatile tinnitus because of pneumocephalus.

Anatomic direction of entry for botulinum toxin injection to treat the adductor spasmodic dysphonia in Thais

Abstract Background: Botulinum toxin injections into the thyroarytenoid (TA) muscle of the larynx is the most popular treatment for adductor spasmodic dysphonia. Injection is usually done by percutaneous transcricothyroid membrane with either electromyography (EMG) or fiberoptic laryngoscopy (FOL) to verify placement of the needle within the TA muscle. This procedure requires a working knowledge of three-dimensional anatomy of the larynx to establish the direction for the accurate placement of the needle. Objective: Find out the appropriate angles and depth of the needle for placement of percutaneous transcricothyroid membrane method of botulinum toxin injection by means of studying the larynges of Thai cadavers. Methods: The descriptive study was performed in 45 Thai freshly thawed cadavers. The angle of the needle from midline sagittal plane, the angle in superior relation to tracheal plane, and the depth from midline cricothyroid (CT) membrane to midlength of TA muscle were measured from the two views of photographs, anteroposterior and lateral. Results: The mean angle of 24.2±6.76° (mean±SD) from the midline sagittal plane in male and 24.9±7.6° in female were worked out. A mean angle in superior relation to the tracheal plane was 47.7±7.8° and 51.4±9.6° in male and female, respectively. The mean depth was 1.7±0.2 and 1.4±0.1 cm in male and female, respectively. Conclusion: The mean angles and depth of the needle insertion from the midline of CT membrane to the center of TA muscle in Thai laryngeal specimens were evaluated. These values were different from the studies in Caucasians, but it could provide a direct relationship to the build of the races. This knowledge may help laryngologists do this procedure more accurately with better outcome, especially in hospitals that have no EMG or FOL guide.