Search results

Sort By:

Limit search:

Analysis of mastoid portion of facial nerve course in temporal bone using computed tomography

100%

Szot P., Płachta I., Nagórska E., Brożek-Mądry E.

Polish Journal of Otolaryngology

2023

vol. 77

issue 4

39-47

Introduction: The facial nerve (FN) follows a complex route in the temporal bone. Successful temporal bone surgery requires knowledge of its course which can be achieved using imaging methods such as computed tomography. This investigation aims to analyze the FN course in its mastoid portion and second genu and the frequency of its atypical course. Material and methods: This is a retrospective study that enrolled 104 CT scans of temporal bones of patients followed up in the outpatient clinic of the Otorhinolaryngology Department of Dentistry Faculty of the Medical University of Warsaw between 2020 and 2022. FN courses were classified as straight, bulging, or letter “S”-like. Other parameters estimated: • position of the second genu according to the prominence of the lateral semicircular canal (classified as lateral, medial, or middle) and its distance from a line adjacent to the lateral semicircular canal was measured; • the distance between the short process of the incus and the outermost point of the second genu; • the course of the mastoid portion of FN and the location of SG in comparison to the tympanic portion of n. VII. The course was later classified as lateral, medial, or middle. Results: Among the 104 assessed temporal bones, the course of the mastoid portion of FN was classified as bulging in 47 cases (45.2%). Straight and letter “S”-like courses were present in 41 (39.4%) and 16 (15.4%) cases, respectively. Deviation of the second genu according to the prominence of the lateral semicircular canal was medial in 86 cases (82.7%), and middle in 4 cases (3.8%). In the rest, second genu was paramedian to the prominence of the later circular canal. The mean distance between the short process of the incus and the outermost point of SG was 4.9 mm (±0.73 mm). The mastoid portion was located laterally, medially, and in the middle of the tympanic portion plane in, respectively, 4.8%, 83.7%, and 11.5%. The second genu was located laterally, medially, and in the middle of the tympanic portion plane in 1.9%, 73.1%, and 25%, respectively. In conclusion, seven temporal bones (6.7%) of five patients presented with a lateral displacement of FN in relation to the established anatomical landmarks. Conclusions: Although the atypical course of FN, including the lateral displacement of the mastoid portion, is rare, screening for it is crucial before surgical exploration.

Epidemiological and clinical characteristics of 407 salivary glands neoplasms in surgically treated patients in 2010–2020

88%

Jaremek-Ochniak W., Skulimowska J., Płachta I., Szafarowski T., Kukwa W.

Polish Journal of Otolaryngology

2022

vol. 76

issue 5

29-36

Introduction: Tumors of the salivary glands account for approximately 3 to 4% of all head and neck neoplasms. It is estimated that 10–15% of them are malignant. The most common benign tumor is pleomorphic adenoma, while the most common malignant tumors are adenoid cystic carcinoma and mucoepidermoid carcinoma. Neoplasms of the salivary glands are extremely histologically diverse, which results from the complex embryogenesis of the salivary glands. The identified risk factors for tumors of the salivary glands are: ultraviolet radiation, ionizing radiation, viral infections, nicotine and alcohol. Material and methods: The aim of the study was an epidemiological analysis of patients with salivary gland neoplasms, the di- stribution and histopathological characteristics of individual neoplasms treated at the Department of Otorhinolaryngology of the Medical University of Warsaw in 2010–2020. The diagnoses were analyzed according to the latest WHO 2017 histological classifi- cation of salivary gland tumors. In addition, the material was supplemented with data on the 5-year survival rates of patients with malignant neoplasms obtained from the Registry of Marital Status. Results and discussion: The material contained 407 neoplasms of the salivary glands over a 11-year period, of which mali- gnant neoplasms accounted for 17.4%. The malignant tumors were dominated by: adenoid cystic carcinoma (28.2%), mu- coepidermoid carcinoma (12.7%), and acinic cell carcinoma (9.9%). Lymphomas (15.5%) were also a large group. The benign neoplasms were dominated by pleomorphic adenoma (54.1%) and Warthin’s tumor (36%). Tumors of the salivary gland the most often affected the parotid gland (92%). Conclusions: The obtained data are consistent with the general epidemiological data described in the current literature

Refine search results

2 Polish Journal of Otolaryngology

1 2023

1 2022

2 Płachta I.

1 Brożek-Mądry E.

1 Jaremek-Ochniak W.

1 Kukwa W.

1 Nagórska E.

1 Skulimowska J.

1 Szafarowski T.

1 Szot P.

Search results

Analysis of mastoid portion of facial nerve course in temporal bone using computed tomography

Epidemiological and clinical characteristics of 407 salivary glands neoplasms in surgically treated patients in 2010–2020