Publications by authors named "Eugene H C Wong"

Introduction Persistent olfactory dysfunction was seen in many patients upon coronavirus disease 2019 (COVID-19) infection recovery. However, research on its management was very limited, especially among the Southeast Asian population. Objectives We aim to investigate the role of olfactory rehabilitation and topical corticosteroids among post-COVID-19 olfactory dysfunction patients in Malaysia, and at the same time to determine factors leading to olfactory recovery post-COVID-19 infection.

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Article Synopsis
  • The article discusses how the recurrence of nose deviations after septorhinoplasty isn't well understood, particularly the role of nasal muscles in this process.
  • The authors propose a theory that explains how muscle imbalances—where muscles on the convex side of a deviated nose become stronger while the concave side weakens—can lead to redeviation during recovery.
  • They suggest using botulinum toxin injections post-surgery to help balance muscle strength and stabilize the nose, while also calling for further research to validate their theory through studies and measurements.
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Background: Primary nasopharyngeal amyloidosis is a rare entity of localised amyloidosis. Patients usually present with symptoms that mimic other common nasal diseases. We report an unusual case of nasopharyngeal amyloidosis that co-exist with nasal polyposis at the same time.

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Background: Nasopharyngeal carcinoma (NPC) is the fourth common cancer in Malaysia. A few studies have looked into the incidence of NPC in Malaysia in general, but there has been no published data on its incidence in Sabah specifically, where NPC is very common among the population. The aim of this study is to present the first report on the incidence of NPC in the state of Sabah, Borneo.

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Background: Hypopharyngeal carcinoma can involve thyroid gland due to their close proximity. However, an initial presentation as a thyroid abscess is rare in this malignancy. To our knowledge, this is the second reported case in the English literature.

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Head and neck synovial sarcoma is rare. We report the case of a 71-year-old man who presented with progressive dysphagia, odynophagia, shortness of breath on exertion and hoarseness of voice. Nasendoscopy revealed a smooth, non-fungating, non-ulcerative mass arising from the left lateral pharyngeal wall.

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Background: Cholesterol granuloma (CG) is a rare entity but is the commonest lesion in the petrous apex. They are associated with chronic ear disease and previous temporal bone surgery. While bone wax has been known to cause foreign body reaction due to its non-resorbable property in the mastoid, it has not been documented to cause CG formation.

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Background: Many studies have looked at the effect of functional endoscopic sinus surgeries (FESS) on nasalance, nasal consonant and nasalized vowels. Only two studies investigated the effect of FESS on vocal sound quality and have not found statistically significant changes before and after operations. The aim of this study was to examine the short-term and long-term objective and subjective changes in the vocal quality of patients after FESS, comparing patients with and without nasal polyps.

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Aim: Endoscopic endonasal nasopharyngectomy (EEN) for recurrent nasopharyngeal carcinoma (rNPC) is being increasingly used due to the added high magnification, reduced morbidities associated with open procedures and good survival outcomes. Most studies looked at usage of EEN in patients with lower recurrent staging (rT1 and rT2) although more and more surgeons are studying the outcome of EEN in advanced rNPC (rT3 and rT4). The aims of this study were to report the long-term 5-year survival outcome of EEN performed in patients with advanced rNPC, and to determine any prognostic factors for patients' survival.

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Article Synopsis
  • Acoustic neuroma typically presents with symptoms like asymmetric hearing loss, tinnitus, dizziness, and a feeling of imbalance, but about 10% of patients may have atypical symptoms such as facial numbness or sudden hearing loss.
  • Patients with atypical symptoms often have larger tumors due to delays in diagnosis and treatment.
  • The case discussed highlights the importance of considering atypical symptoms, as advancements in imaging technology are changing how these tumors are detected and diagnosed.
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Exosomes are nanovesicles involved in intercellular communications. They are released by a variety of cell types; however, their presence in the inner ear has not been described in the literature. The aims of this study were to determine if exosomes are present in the inner ear and, if present, characterize the changes in their protein content in response to ototoxic stress.

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Background: Carcinoma showing thymus-like elements (CASTLE) is a rare tumor that normally affects the thyroid gland and was thought to arise from either the remnants of the branchial pouch or the ectopic cervical thymic tissue. These tumors show strong immunopositivity for CD5, P63, and CD117. Most CASTLE of the thyroid gland is treated with surgery with or without adjuvant radiotherapy or chemotherapy.

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Metastasis of renal cell carcinoma (RCC) to the head and neck region is rare. We report the case of a 65-year-old man with history of RCC, presented 7 years after nephrectomy, adrenalectomy and lung metastasectomy for his primary tumour, with symptoms of nasal obstruction, postnasal drip, productive cough and pressure sensation in the left maxillary sinus. CT revealed a unilateral, irregular opacification in the left maxillary sinus with bony erosion of the infraorbital canal wall.

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Metastasis to the cerebellopontine angle (CPA) or internal auditory meatus (IAM) is rare.We report a rare case of a 69-year-old woman with metastatic lung adenocarcinoma, who presented with 2 weeks history of left-sided hearing loss and progressively worsening vertigo. Examination revealed a left-sided facial nerve palsy while pure tone audiometry (PTA) showed a new left-sided deafness.

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The prevalence of obstructive sleep apnoea (OSA) is increasing due to a rising rate of obesity. Multiple surgical techniques used to address obstruction at the palatal level have been associated with significant morbidities. Few studies have reported good outcomes of anterior palatoplasty (AP) in mild-to-moderate OSA.

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Endoscopic endonasal nasopharyngectomy (EEN) has become increasingly used for recurrent nasopharyngeal carcinoma (rNPC) due to reduced functional and cosmetic morbidities compared to conventional external approach. Majority of the existing studies on EEN focused on patients with lower recurrent staging of rT1 and rT2. The aims of this study were to provide a preliminary report on the outcome of EEN performed in patients with advanced (rT3 and rT4) rNPC, and to determine the prognostic factors for patients' survival.

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Background: There are various different parameters used to measure nasal airway resistance (NAR) in rhinomanometry, which include the classic method at fixed pressure of 150Pa or 75Pa and 4-phase rhinomanometry. This study aims to determine if there is any difference between the measurements of NAR obtained by the classic and 4-phase rhinomanometry methods.

Methodology: In-vitro study with measurements of NAR using both methods when applied across four artificial nose models.

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Calculation of nasal airway resistance (NAR) using rhinomanometry can be obtained using different methods of analysis of the pressure-flow curve. The two commonest methods for measuring NAR in rhinomanometry are the classic method at 75 and 150 Pa and the Broms method at radius 200. The objective of this study was to compare the unilateral NAR values measured using both classic and Broms method over four artificial model noses (R1, R2, R3 and R4).

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Malignant lymphoma of the paranasal sinuses and nasal cavity is very rare and can mimic those of infectious, non-lymphomatous neoplastic and granulomatous process in their initial presentation, thus delaying its diagnosis. This report describes a case of unilateral frontal sinus B-cell lymphoma presenting as Pott's puffy tumour. Key features to differentiate the two conditions are discussed.

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First-bite syndrome (FBS) is an infrequently encountered complication of parapharyngeal space surgery. Patients experience excruciating pain in the ipsiltateral parotid gland region at the first bite of each meal, which improves with subsequent mastication. This is thought to be due to parotid gland sympathetic denervation from surgery with resultant hypersensitivity to parasympathetic impulses.

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