Ear radiology

The integrity of the tympanic membrane is an important factor when deciding treatment and therapeutic recommendations for dogs with ear disease; however, otoscopic examination may be difficult to perform due to features of external ear canal disease or patient compliance. CT is useful for the evaluation of middle ear disease, including cases in which middle ear disease is detected incidentally. The tympanic membrane is detectable using CT, but anecdotally, apparent focal defects or discontinuities of the tympanic membrane are often seen in patients with and without ear disease...

OBJECTIVES: Misplacement of the CI electrode array is one of the rarest complications of cochlear implant surgery. This condition can be noticed intraoperatively and diagnosed radiologically in the early postoperative period. To present a novel and minimally invasive revision approach for a misplaced cochlear implant (CI) electrode array. CASE: In this case report, the authors present a previously undescribed alternative minimally invasive revision cochlear implantation approach for a patient with a misplaced CI electrode array in the right ear who underwent bilateral simultaneous cochlear implantation one and a half years ago at another center...

Intramuscular haemangiomas are benign tumours showing an extremely rare occurrence and making up less than 1% of all haemangiomas. The goal of this case report is to share our experience in treating a patient with an extremely rare intramuscular haemangioma, which occurred in the supraclavicular region VB level of the neck and extended towards the infraclavicular space, localised within and inferior to the trapezius muscle. The lesion was diagnosed by using multimodal imaging and a wide excision was performed with intraoperative feeding vessel ligation and a good postoperative result...

OBJECTIVE: To evaluate the clinical applicability of a semiautomatic radiological tool for scalar translocation detection. STUDY DESIGN: Retrospective study. SETTING: Tertiary care academic center. PATIENTS: We included 104 patients implanted with 116 HiFocus Mid-Scala electrode arrays between January 2013 and September 2016. INTERVENTION: Cochlear implantation. MAIN OUTCOME MEASURES: The tool's scalar position assessments were compared with manual ones by calculating intraclass coefficient (ICC) for individual contacts and sensitivity and specificity for translocation detection of the whole array...

Tophaceous gout can rarely present in the middle ear as a mass-like lesion, causing conductive hearing loss. Noncontrast high-resolution computed tomography (HRCT) of the temporal bone plays a significant role in the diagnosis. Awareness of this condition among radiologists is important since it presents a distinctive appearance on HRCT. We present a case of tophaceous gout of the middle ear diagnosed with photon-counting computed tomography (PCCT). Teaching point: The presence of a partially calcified mass with a semolina-like appearance within the middle ear is highly suggestive of tophaceous gout, even in the presence of normal serum uric acid levels...

No abstract text is available yet for this article.

OBJECTIVES: This study proposes a preoperative radiologic scoring system for predicting posterior tympanotomy (PT) and mastoidectomy-associated difficulties during cochlear implantation (CI). STUDY DESIGN: It was a prospective case-series study. SETTINGS: The included CI surgeries were performed at tertiary referral institutions from October 2022 to April 2023. SUBJECTS: We included 73 CI candidates performed via the PT approach...

BACKGROUND: Neoplasms derived from the sinonasal epithelium are a rare finding in the temporal bone, and their origins are controversial. PURPOSE: To review the characteristics of sinonasal epithelial (previously known as Schneiderian) tumors occurring in the temporal bone. DATA SOURCE: This was a 2-center case series and systematic review of MEDLINE, EMBASE, and the Web of Science through May 2021. STUDY SELECTION: Patients with clinicopathologic evidence of temporal bone involvement by neoplasms of sinonasal epithelial origin were selected, with or without a history of prior primary sinonasal epithelial tumors...

An elderly gentleman self-presented to A+E with a 7-day history of significant and progressive left-sided neck pain, swelling and fevers, despite oral antibiotics from his general practitioner. Examination revealed a large left-sided neck mass involving levels 2-5 of the neck that was firm to palpate, with erythematous overlying skin.An urgent CT scan demonstrated a large collection throughout the length of the left sternocleidomastoid muscle (SCM), measuring 13×5.5×4 cm, with extensive adjacent inflammatory change...

BACKGROUND: In radiologically guided interventions, medical practitioners are subjected to radiation exposure, which may lead to radiation-induced diseases. In this study, novel radiation shields for the head and neck were evaluated for their potential to reduce radiation exposure. METHOD: An anthropomorphic phantom was exposed on its left side to scattered radiation from beneath to simulate the exposure of an operator in a x-ray operating room. Thermoluminescent dosimeters (TLDs) were positioned at different depths in five slices in the phantom, measuring personal dose equivalent...

OBJECTIVE: The objectives of this study are twofold: first, to visualize the structure of malformed cochleae through image reconstruction; and second, to develop a predictive model for postoperative outcomes of cochlear implantation (CI) in patients diagnosed with cochlear hypoplasia (CH) and incomplete partition (IP) malformation. METHODS: The clinical data from patients diagnosed with cochlear hypoplasia (CH) and incomplete partition (IP) malformation who underwent cochlear implantation (CI) at Beijing Tongren Hospital between January 2016 and August 2020 were collected...

OBJECTIVE: Accurate positioning of the electrode array during cochlear implant (CI) surgery is crucial for achieving optimal hearing outcomes. Traditionally, postoperative radiological imaging has been used to assess electrode position. Transimpedance matrix (TIM) measurements have also emerged as a promising method for assessing electrode position. This involves utilizing electric field imaging to create an electric distance matrix by analyzing voltage variations among adjacent electrodes...

BACKGROUND: Temporal bone paragangliomas are vascularized neoplasms. Although preoperative angioembolization serves as a valuable approach to reduce intraoperative blood loss, it comes with an elevated risk of cranial neuropathies, offers no assurance of complete hemostasis, and precludes real-time adjustments during surgery. METHODS: A 74-year-old patient presented with recurrent episodes of ear bleeding. On examination, a vascular lesion obstructed her external auditory canal...

OBJECTIVES: To evaluate the diagnostic performance and reliability of MRI descriptors used for the detection of Ménière's disease (MD) on delayed post-gadolinium MRI. To determine which combination of descriptors should be optimally applied and whether analysis of the vestibular aqueduct (VA) contributes to the diagnosis. MATERIALS AND METHODS: This retrospective single centre case-control study evaluated delayed post-gadolinium MRI of patients with Ménièriform symptoms examined consecutively between Dec 2017 and March 2023...

No abstract text is available yet for this article.

PURPOSE: To report the results involving post-operative interventional radiotherapy (POIRT) in a homogenous cohort of patients affected by keloid and treated at a single institution with the same fractionation schedule. PATIENTS AND METHODS: Inclusion criteria were: surgery with a histopathological diagnosis of keloid, subsequent high-dose rate interventional radiotherapy (HDR-IRT)-12 Gy in 4 fractions (3 Gy/fr) twice a day-and follow-up period ≥ 24 months...

Interpretation of posttreatment imaging findings in patients with head and neck cancer can pose a substantial challenge. Malignancies in this region are often managed through surgery, radiation therapy, chemotherapy, and newer approaches like immunotherapy. After treatment, patients may experience various expected changes, including mucositis, soft-tissue inflammation, laryngeal edema, and salivary gland inflammation. Imaging techniques such as CT, MRI, and PET scans help differentiate these changes from tumor recurrence...

Metallic foreign bodies (FBs) are a safety risk during MRI. Here, we describe a boy in early childhood with an unexpected ferromagnetic FB discovered during a research brain MRI. Safety precautions included written and oral safety screening checklists and visual check during a structured safety pause. During introduction to the scanner, he was lifted to look at the bore. Staff became aware of an object flying into the bore. The child reached for his ear, and a 5 mm diameter ball bearing was found in the bore...

The etiology of sirenomelia is currently unknown. Data are limited in comparing external and internal abnormalities using modern imaging technologies and molecular genetic analysis. The purpose of the current study was designed to compare external and internal anatomical defects in two cases of sirenomelia and Potter's sequence. Considered rare, Potter's sequence is a fetal disorder with characteristic features of bilateral renal agenesis, obstructive uropathy, atypical facial appearance, and limb malformations...

Nager syndrome is a rare human developmental disorder characterized by craniofacial defects including the downward slanting of the palpebral fissures, cleft palate, limb deformities, mandibular hypoplasia, hypoplasia or absence of thumbs, microretrognathia, and ankylosis of the temporomandibular joint. The prevalence is very rare and the literature describes only about a hundred cases of Nager syndrome. There is evidence of autosomal dominant and autosomal recessive inheritance for Nager syndrome, suggesting genetic heterogeneity...