1. Introduction The tegmental wall of the tympanic cavity is a thin plate of the temporal bone that separates the middle cranial fossa(MCF) from the ear. This anatomical region consists of two areas: an anterior one, ...1. Introduction The tegmental wall of the tympanic cavity is a thin plate of the temporal bone that separates the middle cranial fossa(MCF) from the ear. This anatomical region consists of two areas: an anterior one, comprised of the tegmen tympani(To′th et al., 2007), and a posterior one, formed by the tegmen antri and the tegmen mastoideum(Makki et al., 2011). In some patients, the tegmental region of the temporal bone can be interrupted, causing a tegmen defect(TD). A TD is sometimes associated with a meningoencephalic herniation(MEH), in which brain tissue herniates through a TD.展开更多
Background/Objectives: Epistaxis is a common presentation and may constitute a major challenge to the parents and the health care givers. This study aimed at determining the clinico-epidemiological pattern, presentati...Background/Objectives: Epistaxis is a common presentation and may constitute a major challenge to the parents and the health care givers. This study aimed at determining the clinico-epidemiological pattern, presentation and etiology of epistaxis. Materials and Methods: This prospective study of all patients that presented with epistaxis via the Ear, Nose and Throat department of a tertiary institution in Nigeria. The study was carried out between June 2012 and July 2017. Data were obtained from patients who gave consent by using pre-tested interviewer assisted questionnaire. All the data obtained were analyzed using SPSS version 16.0. Results: The prevalence of epistaxis in this study was 12.2%. The peak age group was 1-10 years with epistaxis prevalence of 36.4%. The male to female ratio was 1.5:1. Anterior epistaxis was more common than posterior epistaxis accounted for 80.1% and 7.4% respectively. Single episode of epistaxis was seen in 78.4% of the patients while recurrent epistaxis occurred in 21.6%. Unilateral epistaxis was 62.5%, bilateral epistaxis was 37.5% while right nasal bleeding accounted for 35.8%. The main local causes of epistaxis were trauma 29.5%, infective rhinosinusitis 18.8% and sinonasal tumours 12.5%. Severe epistaxis requiring blood transfusion was seen in 2.8% of the patients and death was recorded in 2.3%. Majority 110 (62.5%) were managed by observation alone, 20 (11.4%) by conservative therapy and 22 (12.5%) had surgical excision. Blood transfusion was given in 5. The outcome of treatment was good recovery in 79.0% while patients’ satisfaction with treatment was noted in 84.1%. Conclusion: Epistaxis is a common sinonasal presentation with effect on quality of life. In our center commonest site of nose bleeds was local mainly from traumatic, inflammatory and neoplastic aetiology.展开更多
Complications of middle ear cholesteatoma are well described in the literature and are classified into two major categories: intratemporal and intracranial. They are due either to infection or to local extension of th...Complications of middle ear cholesteatoma are well described in the literature and are classified into two major categories: intratemporal and intracranial. They are due either to infection or to local extension of the disease and consequent invasion of surrounding tissues. We describe an unusual case of an extratemporal complication in a young woman who was treated at our service. Ten years previously she had undergone canal-wall-down tympanoplasty that did not achieve complete control of the disease. At this admission, the patient was found to have peculiar extension of the recurrent cholesteatoma into the temporozygomatic area. She underwent tympanoplasty of the canal wall using a targeted surgical technique. We resected the recurrent cholesteatoma en bloc without damaging the facial nerve despite extension of the mass to the ear and face. Follow-up was performed each year for 7 years without evidence of recurrence. Cholesteatomas are highly osteolytic, and extension of any residual cholesteatoma is unpredictable. Cholesteatoma of the middle ear requires a careful surgical approach to avoid complications, maintaining awareness of its possible extension into surrounding structures.展开更多
Air flow in nose and sinuses is studied by means of a simple model based on the steady-state ideal fluid flow assumption and repeated use of Bernoulli’s equation. In particular, by describing flow of air drawn in thr...Air flow in nose and sinuses is studied by means of a simple model based on the steady-state ideal fluid flow assumption and repeated use of Bernoulli’s equation. In particular, by describing flow of air drawn in through the vestibulumnasi during inspiration, we investigate how ventilation of the maxillary sinus is affected by surgical removal of part of the lateral walls of the nasal cavity close to the ostiummeatal complex. We find that, according to the model proposed, removal of tissues from this inner part of the nasal cavity may cause a decrease of the flux rate from the maxillary sinus.展开更多
Objective To establish the local data on the growth of ear in Hong Kong children and provide a reference for the timing of reconstruction in unilateral microtia.Methods We reviewed case notes of paediatric patients up...Objective To establish the local data on the growth of ear in Hong Kong children and provide a reference for the timing of reconstruction in unilateral microtia.Methods We reviewed case notes of paediatric patients up to 18 years of age who had attended our Ear,Nose and Throat Out-patient Clinic from March to November 2017.We recorded the pinna length of these patients and that of their parents,compared the patients’ear length against that of their parents,and investigated any discrepancy of pinna.Results We recruited 226 local individuals(139 males and 87 females).The patients were divided into different age groups.The means of ear length of patients were compared with the mean length of pinna of their parents.Data of boys and girls are analyzed separately.Boys at 7-8 years old achieved 87.33%and 93.54%of their fathers’and mothers’ear length respectively.Girls at 7-8 years old achieved 83.00%and 90.80%of their fathers’and mothers’ear length respectively.Moreover,the average ratio of the length of left and right ear ratio is 97.3%in all groups of children.Conclusions In Hong Kong children,at the age of 7-8 the ear approaches the size of normal adult ear and is the feasible age with less asymmetry after reconstruction of the microtia.展开更多
文摘1. Introduction The tegmental wall of the tympanic cavity is a thin plate of the temporal bone that separates the middle cranial fossa(MCF) from the ear. This anatomical region consists of two areas: an anterior one, comprised of the tegmen tympani(To′th et al., 2007), and a posterior one, formed by the tegmen antri and the tegmen mastoideum(Makki et al., 2011). In some patients, the tegmental region of the temporal bone can be interrupted, causing a tegmen defect(TD). A TD is sometimes associated with a meningoencephalic herniation(MEH), in which brain tissue herniates through a TD.
文摘Background/Objectives: Epistaxis is a common presentation and may constitute a major challenge to the parents and the health care givers. This study aimed at determining the clinico-epidemiological pattern, presentation and etiology of epistaxis. Materials and Methods: This prospective study of all patients that presented with epistaxis via the Ear, Nose and Throat department of a tertiary institution in Nigeria. The study was carried out between June 2012 and July 2017. Data were obtained from patients who gave consent by using pre-tested interviewer assisted questionnaire. All the data obtained were analyzed using SPSS version 16.0. Results: The prevalence of epistaxis in this study was 12.2%. The peak age group was 1-10 years with epistaxis prevalence of 36.4%. The male to female ratio was 1.5:1. Anterior epistaxis was more common than posterior epistaxis accounted for 80.1% and 7.4% respectively. Single episode of epistaxis was seen in 78.4% of the patients while recurrent epistaxis occurred in 21.6%. Unilateral epistaxis was 62.5%, bilateral epistaxis was 37.5% while right nasal bleeding accounted for 35.8%. The main local causes of epistaxis were trauma 29.5%, infective rhinosinusitis 18.8% and sinonasal tumours 12.5%. Severe epistaxis requiring blood transfusion was seen in 2.8% of the patients and death was recorded in 2.3%. Majority 110 (62.5%) were managed by observation alone, 20 (11.4%) by conservative therapy and 22 (12.5%) had surgical excision. Blood transfusion was given in 5. The outcome of treatment was good recovery in 79.0% while patients’ satisfaction with treatment was noted in 84.1%. Conclusion: Epistaxis is a common sinonasal presentation with effect on quality of life. In our center commonest site of nose bleeds was local mainly from traumatic, inflammatory and neoplastic aetiology.
文摘Complications of middle ear cholesteatoma are well described in the literature and are classified into two major categories: intratemporal and intracranial. They are due either to infection or to local extension of the disease and consequent invasion of surrounding tissues. We describe an unusual case of an extratemporal complication in a young woman who was treated at our service. Ten years previously she had undergone canal-wall-down tympanoplasty that did not achieve complete control of the disease. At this admission, the patient was found to have peculiar extension of the recurrent cholesteatoma into the temporozygomatic area. She underwent tympanoplasty of the canal wall using a targeted surgical technique. We resected the recurrent cholesteatoma en bloc without damaging the facial nerve despite extension of the mass to the ear and face. Follow-up was performed each year for 7 years without evidence of recurrence. Cholesteatomas are highly osteolytic, and extension of any residual cholesteatoma is unpredictable. Cholesteatoma of the middle ear requires a careful surgical approach to avoid complications, maintaining awareness of its possible extension into surrounding structures.
文摘Air flow in nose and sinuses is studied by means of a simple model based on the steady-state ideal fluid flow assumption and repeated use of Bernoulli’s equation. In particular, by describing flow of air drawn in through the vestibulumnasi during inspiration, we investigate how ventilation of the maxillary sinus is affected by surgical removal of part of the lateral walls of the nasal cavity close to the ostiummeatal complex. We find that, according to the model proposed, removal of tissues from this inner part of the nasal cavity may cause a decrease of the flux rate from the maxillary sinus.
基金Ethical approval was given by the medical ethics committee of Kowloon Central/Kowloon Eas(KCKE SOP 001F6a).
文摘Objective To establish the local data on the growth of ear in Hong Kong children and provide a reference for the timing of reconstruction in unilateral microtia.Methods We reviewed case notes of paediatric patients up to 18 years of age who had attended our Ear,Nose and Throat Out-patient Clinic from March to November 2017.We recorded the pinna length of these patients and that of their parents,compared the patients’ear length against that of their parents,and investigated any discrepancy of pinna.Results We recruited 226 local individuals(139 males and 87 females).The patients were divided into different age groups.The means of ear length of patients were compared with the mean length of pinna of their parents.Data of boys and girls are analyzed separately.Boys at 7-8 years old achieved 87.33%and 93.54%of their fathers’and mothers’ear length respectively.Girls at 7-8 years old achieved 83.00%and 90.80%of their fathers’and mothers’ear length respectively.Moreover,the average ratio of the length of left and right ear ratio is 97.3%in all groups of children.Conclusions In Hong Kong children,at the age of 7-8 the ear approaches the size of normal adult ear and is the feasible age with less asymmetry after reconstruction of the microtia.
