A case of neurilemmoma in the infratemporal fossa showing the antral bowing sign.
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A case is reported of a neurilemmoma which arose in the right infratemporal fossa of a 23-year-old male. A benign tumour was suspected when bowing of the posterior maxillary antral wall was observed on CT.Keywords:
Bowing
Infratemporal fossa
Fossa
Authors present ten cases of tumors of the infratemporal fossa that have different etiology being treated by operation. Six of the patients died, four of them are alive. Authors describe diagnostical principles of these types of tumors.
Infratemporal fossa
Etiology
Fossa
Middle fossa
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Giant cell tumors occur most frequently in the long bones and rarely involve bones in the head and neck region. A case of giant cell tumor arising in the infratemporal fossa is reported. A 39-year-old male had middle ear effusion in the left ear for 3 months. Swelling on the left side of the face and mild disturbance of mandibular movement also developed. CT showed a well enhanced round mass in the left infratemporal region. The tumor was removed by two-stage surgery. The first surgery was performed by a transmandibular approach and the second by a transzygomatic approach. The patient has been followed up for 1 year without evidence of recurrence.
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Certain approximaations are introduced into a recently developed general theory of the thermal bowing of nuclear fuel pins restrained by two equally spaced anti-bowing grids. It is shown that simple expressions may be obtained for the maximum bow of a fuel pin under elastoplastic and plastic conditions which may be sufficiently accurate for many purposes. Simple expressions are also derived for the loads on the anti-bowing grids and end support plates. (auth)
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Objective: To review the surgical treatment of the tumor in pterygomaxillary fossa and infratemporal fossa.Methods: The treatment of 18 patients with the tumors in pterygomaxillary fossa and/or infratemporal fossa from 2004~2007 was analyzed retrospectively,including histodiagnosis,image examinations,surgical approachs and follow-up.Results: No recurrence was found in the 5 cases with benign tumor in 3-year follow-up.Among the 13 cases with malignant tumor 5 died in one year,2 died in 1.5 to 2 years,and 6 were survival for more than 3 years.Conclusion: In the treatment of tumors in pterygopalatine fossa and/or infratemporal fossa attention should be paid for the pathology and location of the tumor.
Infratemporal fossa
Pterygopalatine fossa
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A method is described for measurement of a complete set of bowing parameters in violin performance. Optical motion capture was combined with sensors for accurate measurement of the main bowing parameters (bow position, bow velocity, bow acceleration, bow-bridge distance, and bow force) as well as secondary control parameters (skewness, inclination, and tilt of the bow). In addition, other performance features (moments of on/off in bow-string contact, string played, and bowing direction) were extracted. Detailed descriptions of the calculations of the bowing parameters, features, and calibrations are given. The described system is capable of measuring all bowing parameters without disturbing the player, allowing for detailed studies of musically relevant aspects of bow control and coordination of bowing parameters in bowed-string instrument performance.
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Infratemporal fossa
Pterygopalatine fossa
Fossa
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Objective:To investigate an appropriate surgical approach and surgical techniques for tumors in the parapharyngeal and infratemporal fossa so as to reduce complications. Methods:Combining with preoperative image examination,seven patients with space-occupying lesions in the parapharyngeal and infratemporal fossa committed to our department from September 2007 to April 2009 who were underwent the surgery applying with preauricular and submandibular incision were studied retrospectively. Results:Surgery in all patients had been finished smoothly ,and no obvious complications. Followed up from two months to eighteen months,no recurrence was found in all patients. Conclusion:Tumors in the parapharyngeal and infratemporal fossa with a clear boundary relatively could be successfully removed by only preauricular and submandibular incision. This surgical approach had less trauma and less postoperative complications.
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Objective We describe an endoscopic transoral approach for treating benign lesions of the glenoid fossa with or without infratemporal fossa involvement. Study Design Description and validation of surgical technique on living humans. Methods Excision of benign lesions arising from the glenoid fossa was achieved in five patients through a transoral endoscopic approach. Using 0‐ and 45‐degree angled 4‐mm optics, the entire middle skull base and infratemporal fossa were explored without damaging the nearby neurovascular structures. Results Three of the five patients had complete removal of osteochondroma. In the remaining two patients, the lesion removed was diagnosed as osteoma. In one patient, postoperative numbness of the alveolar nerve was observed. No infections were reported. The surgical approach utilized was determined to be valid not only for glenoid fossa exposure but also for management of the middle skull base and infratemporal fossa. Conclusion The described approach to the glenoid fossa offers direct and minimally invasive access to benign lesions within this region. Further use of this approach will allow us to determine its potential in treating malignancies. Level of Evidence 4. Laryngoscope , 125:2054–2057, 2015
Infratemporal fossa
Fossa
Neurovascular bundle
Juvenile nasopharyngeal angiofibroma
Middle cranial fossa
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To investigate the optimal surgical approach for resecting infratemporal fossa-pterygomaxillary fossa-parapharyngeal space tumor. The aim of this study is to enhance therapeutic effect and reduce complications and sequelae.Sixty-six patients with infratemporal fossa-pterygomaxillary fossa-parapharyngeal space tumor were analyzed retrospectively from 1998-2004, including complains, symptoms, physical signs; histodiagnosis, image examinations and surgical approaches.No recurrence was found in fifty benign tumor cases after 2 to 5 years, while in 16 cases with malignant tumor, four patients died in one year, 8 cases died in 2 to 4 years, and only 4 patients' survival time exceeded 4 years.Extended maxillectomy is suitable for resecting primary carcinoma of maxillary sinus invading pterygomaxillary fossa, infratemporal fossa and /or parapharyngeal space tumor. also midface degloving approach is suitable for nasal primary cavity, nasal sinuses, nasopharynx and/or pterygomaxillary fossa tumor and localized malignant tumor. Trans-cervical combining mandibular split swing approach is suitable for parapharyngeal space tumor invading pterygomaxillary fossa and/or infratemporal fossa tumor. Trans-cervical jaw combining mandibulotomy is suitable for resecting parapharyngeal space, infratemporal fossa tumor for invading lateral skull base and pterygomaxillary fossa tumor.
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The subarcuate fossa was studied in 150 turtles. The enclosed muscles, fasciae and cellular tissue spaces, vessels and nerves -- in 145 heads of corpses of adult humans by the methods of dissecting, making Pirogov's sections and histotopograms. Extreme forms in the structure of the subarcuate fossa were revealed as well as interrelations between the structure of the fossa and enclosed anatomical formations.
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