The magnetic resonance characteristics of sinonasal rhabdomyosarcoma in adults: analysis of 27 cases and comparison with pathological subtypes.

Background: Sinonasal rhabdomyosarcoma (RMS) in adults is extremely rare, and early diagnosis and treatment are crucial to improve the patient's prognosis. The purpose of this study was to evaluate the magnetic resonance imaging (MRI) findings of sinonasal RMS in adults and analyze the correlations between the imaging features and pathological subtypes.

Methods: We reviewed 27 patients with pathologically proven RMS of the nasal cavity and paranasal sinuses, including embryonal RMS (ERMS) in 14 patients, alveolar RMS (ARMS) in seven patients, and mixed-type RMS in six patients.

Middle Ear Teratoma: Clinical and Imaging Features.

Background: Teratoma is a true neoplasm composed of a number of different types of tissue derived from the three germinal layers but rarely occurs in the middle ear (ME). The features of middle ear teratomas (MET) have not been well described.

Objective: The objective of this study is to explore the clinical and imaging features of MET, and report 2 rare cases of MET with ear malformation that have never been reported.

Otoscopy and imaging features of spontaneous temporomandibular joint herniation into the external auditory canal.

Objective: To explore the otoscopy, CT and MRI features of spontaneous temporomandibular joint(TMJ）herniation(STMJH) into the external auditory canal (EAC) through the persistent foramen of Huschke (PFH).

Methods: 15 cases diagnosed STMJH were collected. The otoscopy, CT data of 15 cases and MRI data of 6 cases were retrospectively reviewed.

[Imaging diagnosis of masses in temporal bone associated with pulsatile tinnitus].

Objective: To improve the imaging diagnosis accuracy on masses of temporal bone associated with pulsatile tinnitus.

Methods: The CT and MRI features of masses in temporal bone associated with pulsatile tinnitus in 32 cases, confirmed by pathology, were retrospectively analyzed.

Results: They were grouped into two according to the jugular bulb involved or not.

Role of magnetic resonance diffusion-weighted imaging in differentiating lacrimal masses.

Purpose: To evaluate the role of magnetic resonance (MR) diffusion-weighted imaging (DWI) in discriminating lacrimal masses, including neoplastic and nonneoplastic entities.

Materials And Methods: Forty-four patients with lacrimal masses underwent conventional MRI and DWI. The apparent diffusion coefficient (ADC) values of each mass and the ipsilateral temporal lobe were measured and the ratios of the lesion to temporal lobe ADC were calculated.

Labyrinthine sequestrum: four case studies.

Labyrinthine sequestrum, a rare form of labyrinthitis, is highly distinct from the more commonly encountered labyrinthitis ossificans based on its unique clinical, radiologic, and histologic characteristics. The study included 4 such patients who had undergone clinical and laboratory investigations, computed tomography (CT), and magnetic resonance imaging (MRI) assessments followed by surgical procedures and pathological evaluation. Their major symptoms were otorrhea, otalgia, tinnitus, and profound hearing loss.

3D image of the middle ear ossicles: three protocols of post-processing based on multislice computed tomography.

The aim of this study was to examine and assess the comparative values of HRCT-based multiplanar reformation (MPR), volume rendering (VR) and virtual endoscope built on three-dimensional shaded-surface display (SSD-based CTVE) for evaluations of the ossicular chain. The normal pure tone audiograms, type-A tympanogram, and normal HRCT characteristics of 32 human ears of 18 patients were reviewed, whose ossicular chains were reconstructed with the three aforementioned protocols and assessed via the 3-point scoring system. The HRCT-based protocols could demonstrate a 3D image of the ossicular chain, except that of the footplate on the SSD-based CTVE.

[Research on quality of Epimedium extract in market].

Objective: To review the quality of Epimedium extract in the market.

Method: The contents of icariin, epimedin C, sagittatoside B and total flavonoids in Epimedium extracts sold in the market were assayed by the methods of HPLC and UV respectively. HPLC fingerprintings were obtained at the same time.