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Results for “Ethmoid Bone”

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At least 19 recordsLinked to original sources
PubMed1993

[Fracture healing of the ethmoid bone--a contribution to rhinologic management of naso-ethmoid injuries].

Severe maxillofacial trauma accompanied by a dislocated ethmoidal bone fracture was confirmed by CT imaging in 15 adult patients. Routine surgical management included reduction of fractures, miniplate fixation and/or intermaxillary fixation with interosseous wiring. The fractured ethmoidal cell system was left to heal spontaneously. A follow-up examination including endoscopy of the nasal cavity as well as active anterior rhinomanometry and computed tomography was carried out approximately 24 months after surgery. The fractured ethmoidal cell system showed a clear tendency to spontaneously reventilate and drain. However, in 8 of 30 sides a traumatic obstruction of the anterior ethmoid led to secondary frontal sinus mucositis. 12 out of 30 maxillary sinuses ranged from marked mucosal swelling to the development of a traumatic mucocele. Altogether, 9 of the 15 patients suffered from paranasal sinusitis. Routine debridement of every fractured ethmoidal cell system does not appear to be necessary. In case of fractures of the anterior ethmoid with probable obstruction of the nasofrontal duct and/or maxillary sinus ostium, endonasal endoscopic surgery is recommended for minimally invasive reconstruction of the ventilation and drainage of the frontal and maxillary sinus during primary surgical management. Furthermore, patients with severe naso-orbito-ethmoidal fractures should undergo rhinological follow-up examination including CT-imaging approximately 3 months after surgery.

Adolescent↗
PubMed1998

Histology and histomorphometry of ethmoid bone in chronic rhinosinusitis.

Mucosal changes have been well described in chronic sinusitis, yet little is known about the underlying bone, despite clinical and experimental evidence suggesting that bone may be involved in chronic sinusitis. Techniques of undecalcified bone analysis were used for detailed histologic examination of ethmoid bone in chronic sinusitis compared with controls. Bone synthesis, resorption, and inflammatory cell presence were specifically assessed. Additionally, histomorphometry techniques were used to determine ethmoid bone physiology in individuals undergoing surgery for chronic sinusitis. Overall, individuals undergoing surgery for chronic sinusitis were found to have evidence of marked acceleration in bone physiology with histologic changes including new bone formation, fibrosis, and presence of inflammatory cells. These findings are compared with osteomyelitis in long bone and the jaw. The suggestion that underlying bone may serve as a catalyst for chronic sinusitis is supported and implications for therapy are discussed.

Adult↗
PubMed1985

Primary Ewing's sarcoma of the ethmoid bone.

Primary Ewing's sarcoma of the ethmoid bone has not been previously described. This case presented as a mass at the nasal bridge and posed diagnostic and therapeutic difficulties. The clinical, radiological, macroscopic and microscopic features are described. The treatment by the combined therapies of cranio-facial resection, radiotherapy and chemotherapy are discussed.

Adolescent↗
PubMed1997

Transformation of the shape of the ethmoid bone during the course of life.

The ethmoid bone undergoes significant changes in the course of life. The critical period is the time from 9 to 35 years of age. The changes in its shape depend upon the intensity of pneumatization of the ethmoid labyrinth and frontal sinus. If pneumatization of the labyrinth is excessive, the ethmoidal cells are not covered by the frontal bone. On the contrary, they are incorporated in the inferior floor of the anterior cranial fossa, resulting in a possible risk of penetration during surgical ethmoidectomy.

Adolescent↗
PubMed1975

Benign osteoblastoma of the ethmoid bone. Report of a case.

The second reported case of benign osteoblastoma of the ethmoid bone, in a 13-year-old boy, is described, with emphasis on clinical, radiographic and pathologic features. The characteristics of benign osteoblastoma are briefly elucidated.

Adolescent↗
PubMed1997

Osteoblastoma of the nasal cavity arising from the perpendicular plate of the ethmoid bone.

The presence of a benign osteoblastoma in the ethmoid sinus is rare and only a few cases have been reported. This is a case of a benign osteoblastoma arising from the perpendicular plate of the ethmoid bone with extension to the nasal cavity. The diagnosis and management of this unusual lesion, as well as the histopathology and the imaging characteristics are reviewed. We also review the previously reported cases of benign osteoblastomas of different origin, with nasal cavity involvement.

Adult↗
PubMed1994

Ethmoid bone sandwich grafting for caudal septal defects.

OBJECTIVE: To evaluate a new technique for correction of severe caudal septal defects. DESIGN: For all patients, preoperative photographs were graded with regard to the severity of caudal septal defects. Preoperatively, nasal airway breathing surveys were conducted and nasal tip projection (NTP) measurements were recorded. The caudal septal defects were then repaired with use of the ethmoid bone sandwich grafting technique. Photographs, NTP measurements, and an airway survey were then repeated 6 and 12 months postoperatively. Preoperative and postoperative assessments were compared and analyzed. Lateral nasal roentgenograms were obtained in five of 10 patients to assess resorption of the bone grafts. Complications were noted if present. SETTING: Urban medical center. PATIENTS: Ten volunteers with severe caudal septal defects causing both cosmetic and functional problems. All patients had undergone at least one previous submucous resection. OUTCOME MEASURES: Durability and degree of correction, maintenance of NTP, airway improvement, and morbidity. RESULTS: After 1 year, all patients maintained satisfactory correction of their caudal septal defect based on postoperative photographic grading and physical examination findings. The NTP was maintained in eight of 10 patients. Two patients experienced loss of NTP after 1 year that was not present 6 months postoperatively. Average airway improvement was 126.7% after 1 year. Postoperative roentgenograms showed only minor (< 10%) bone graft resorption. The only complication was a granuloma. CONCLUSIONS: The ethmoid bone sandwich grafting technique corrected severe caudal septal deviations while maintaining or strengthening structural support of the caudal septal strut without loss of NTP, airway compromise, or morbidity.

Adult↗
PubMedDate not supplied

[Suppurative meningitis as a complication of suppurative-necrotic ethmoiditis with fusion of the ethmoid bone].

Analysis of a clinical case of secondary purulent meningitis due to the spread of inflammation from back cells of the ethmoid bone is the focus of this review. Attention is concentrated on difficulties of diagnosing this variant of ethmoiditis and high risk of development of cerebral complications. It is advisable that clinical methods of examination be combined with instrumental ones in order that to avoid gross blunders in diagnosis might be avoided.

Acute Disease↗
PubMed1982

The ethmoid bone: implications for normal and abnormal facial development.

Deficiencies of the ethmoid and embryologically related bones of the anterior cranium have been observed in patients with abnormalities in development or placement of the orbits and eyes, nose, upper lip, mouth, and palate. Although these facial anomalies are commonly associated with holoprosencephaly, they may occur in other syndromes or as isolated cases with normocephaly. Such facial alterations represent the consequences of aberrant migration of tissues into the region normally occupied by the ethmoid bone, beginning early in the sixth week of gestation. The subtle interplay of forces involved in the normal development of the median face appears to be mediated by the ethmoid bone. This interaction may be perceived by dividing the ethmoid bone into three functional components which correspond to and operate in each of the major anatomic planes.

Cell Differentiation↗
PubMed1992

[Functional endoscopic ethmoid bone revision in inflammatory paranasal sinus diseases in childhood].

A total of 57 children aged between 5 and 15 years underwent endoscopic ethmoid surgery for recurrent acute or chronic rhinogenic sinusitis, chronic sinusitis associated with bronchial asthma or chronic bronchitis, early rhinogenous orbital complications and paranasal sinus disease associated with mucoviscidosis. The indications for surgical intervention are based on symptoms, the findings on nasal endoscopy and a CT scan of the paranasal sinuses in the coronal plane. The preoperative examination shows that in childhood there are endoscopically detectable anatomical variations of the ethmoid bone (pneumatised middle nasal concha, reversed curvature of the middle turbinate and contact between the uncinate process and the turbinate) that create the conditions for the development of inflammatory paranasal sinus diseases. Careful elimination of these obstructions can accomplish complete cure of the inflammation, and early orbital complications can be treated effectively by combination of surgery with infusion of antibiotics. All surgery was performed under endotracheal anaesthesia using the endoscopic technique described by Messerklinger. The follow-up period was between 6 and 18 months. With the exception of children suffering from mucoviscidosis, cure of the paranasal sinus disease and rhinomanometrically demonstrable improvement of the nasal breathing was achieved in all cases. On the basis of our results a conservative endoscopic approach is recommended as an effective surgical method for the treatment of paranasal sinus disease in childhood.

Adolescent↗
PubMed1992

[Historical notes on the ethmoid bone].

The intriguing historical exploration of the anatomy of the ethmoid and ethmoidal cells is described. Despite continuing research, the ethmoid remains a puzzling topic.

Anatomy↗
PubMed1981

[Osteoid osteoma of the ethmoid bone (author's transl)].

Osteoid osteoma can be distinguished from compact osteoma by the presence in its centre of a cavity (nidus) which is distinctly visible on tomography or CT scans. Contrary to osteomas, osteoid osteomas are rarely found in facial sinuses. The authors report on one exceptional case located in the ethmoid bone and review the clinical and anatomicopathological features of this benign tumour.

Child↗
PubMed1985

[Mucous membrane changes in the anterior ethmoid bone in chronic sinusitis and mycoses of the paranasal sinuses. An endoscopy, light and electron microscopy study. 2. Electron microscopy findings].

In the second part of this paper the findings of electron microscopical studies on ultrastructural changes of the cilia of the ethmoidal mucous membrane in patients with mycotic chronic sinusitis are presented. Many pathological variations of the normal 9 + 2 pattern can be demonstrated, along with compound cilia and central axis deviation beyond 25 degrees. This together with the endoscopical and lightmicroscopical findings results in conditions which are different from those in acute sinusitis. It may as well explain, why hardly a conservative therapy--aiming mostly for vasoconstriction and decrease of mucosal edema--is successful in chronic sinusitis. Endoscopical surgery of the diseased anterior ethmoid in most of the cases brings along cure of the dependent frontal and maxillary sinuses as well.

Chronic Disease↗