Anterior Ethmoid Anatomy Facilitates Dacryocystorhinostomy

Blaylock, William K.

doi:10.1001/archopht.1990.01070140128045

Cited by 63 publications

(18 citation statements)

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“…Similarly, Blaylock et al reviewed computed tomography (CT) scans of 190 orbits and found that in 93 % of the orbits, the anterior ethmoid cells extended anterior to the posterior lacrimal crest, with 40 % extending anterior to the maxillary-lacrimal bone suture and entering the frontal process of the maxilla [ 28 ]. In only 7 % of orbits was the nasal cavity directly adjacent to the entire lacrimal sac fossa.…”

Section: Nasal and Paranasal Sinusesmentioning

confidence: 99%

Anatomy of the Lacrimal System

Burkat

Wei

2014

The Lacrimal System

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Section: Nasal and Paranasal Sinusesmentioning

confidence: 99%

Anatomy of the Lacrimal System

Burkat

Wei

2014

The Lacrimal System

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“…Several reasons of failure of DCR have been reported, including ostium problems such as small size and inappropriate position of osteotomy window, bone regrowth, variations in nasal cavity and paranasal sinuses (e.g., concha bullosa, ethmoidal bullae), lacrimal sac and canalicular problems, tumors, and inflammatory disease. 9,13,14,[16][17][18][19][20][21][22] In our study it was seen that out of the 38 patients, 34 patients (89.47%) had inappropriate size of osteotomy window. The antero-posterior diameter of the bony ostium ranged from 4mm to 15mm.…”

Section: Discussionmentioning

confidence: 86%

Evaluation of dacryocystorhinostomy failure with computed tomographic dacryocystography

et al. 2017

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Background: The purpose of this study is to evaluate the causes of failure of dacryocystorhinostomy by computed dacryocystography (CT-DCG).Methods: CT-DCG was done in 38 patients of failed DCR of either sex in the age group of 16-60 years, the radiologist blinded to the clinical status of the patient evaluated position and size of bony ostium, soft tissue scarring, bony regrowth, secondary stenosis of canaliculi, synechiae between the ostium and nasal septum and anatomic variations in nasal cavity, turbinates or nasal septum.Results: The most common causes of failure in our study were inappropriate size of osteotomy window in 34 patients (84.47%), inappropriate location of osteotomy window in 31 patients (81.57%), fibrous tissue scarring at osteotomy window in 22 patients (57.89%), the other causes were bilateral concha bullosa in 2 patients, ethmoidal sinusitis in 2 patients, common canalicular block in 1 patient, faulty passage into ethmoidal sinus in 1 patient and no osteotomy window seen in patient.Conclusions: CT-DCG is a valuable imaging tool to evaluate DCR failure before re-operation. In our study CT-DCG showed that small size of osteotomy window, inappropriate position of osteotomy window and fibrous tissue scarring at osteotomy window were frequently seen causative factors of DCR failure.

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“…A fossa lacrimal está em proximidade direta com as células etmoidais anteriores. Verificouse que a pneumatização etmoidal chega tão anterior a ponto de penetrar no processo nasal da maxila em 40% das órbitas (18) . Encontrando-se células etmoidais ao iniciar a osteotomia, é necessário abrir a célula para alcançar a fossa lacrimal.…”

Section: Discussionunclassified

Analisando a dacriocistorrinostomia endoscópica: dificuldades e soluções

Knijnik¹

2007

Arq. Bras. Oftalmol.

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Anterior Ethmoid Anatomy Facilitates Dacryocystorhinostomy

Cited by 63 publications

References 14 publications

Anatomy of the Lacrimal System

Anatomy of the Lacrimal System

Evaluation of dacryocystorhinostomy failure with computed tomographic dacryocystography

Analisando a dacriocistorrinostomia endoscópica: dificuldades e soluções

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