Ultrasound Biomicroscopy of Anterior Segment Tumors

Pavlin, Charles J.; McWhae, John A.; McGowan, Hugh; Foster, F. Stuart

doi:10.1016/s0161-6420(92)31820-2

Cited by 181 publications

(72 citation statements)

References 9 publications

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“…Our finding that most eyes containing a primary neuroepithelial cyst of the iris midzone or iridociliary sulcus actually contain multiple cysts is in disagreement with previously reported findings based on slit-lamp biomicroscopy and gonioscopy7 and on conventional water-bath B-scan ultrasonography.8 Shields and associates7 described 50 patients with at least one neuroepithelial cyst of the iris midzone or iridociliary sulcus but found multiple cysts in only 4 (8%) of them. Three of the 4 had midzonal cysts, but only 1 had iridociliary sulcus cysts.…”

Section: Intratumoral Cavitationcontrasting

confidence: 98%

Ultrasound Biomicroscopy of cystic lesions of the iris and ciliary body

Augsburger

Affel²,

Benarosh³

1997

American Journal of Ophthalmology

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Objectives: To describe and illustrate the ultrasound biomicroscopic findings in patients with one or more cystic lesions of the iris, ciliary body, or both.Methods: Retrospective study of 263 ultrasound biomicroscopic studies performed at one institution during a 20-month period, May 1994 through December 1995. All studies were performed using the Humphrey ultrasound biomicroscope model 840.Results: Thirty-nine of the 263 evaluated patients had one or more cystic lesions. Four different types of cysts were detected. Twenty-seven patients had one or more primary neuroepithelial cysts of the iris or ciliary body. These cysts were frequently multifocal and bilateral. All contained clear fluid and had a thin but highly reflective wall. Three patients had a stratified squamous epithelial implantation cyst. These cysts were all unifocal and unilateral. The intracavitary fluid contained multiple suspended particles (presumably desquamated epithelial cells), and the walls were relatively thick. Six patients had a neuroepithelial cyst associated with a solid tumor. Each of these cysts resembled the primary neuroepithelial cysts. Three patients had focal intratumoral cavitation. The cavity in each case contained clear fluid. The surrounding tumor tissue in each case appeared homogeneous.Conclusions: Ultrasound biomicroscopy appears to be a valuable clinical tool for evaluating and differentiating cystic lesions of the iris and ciliary body.

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Section: Intratumoral Cavitationcontrasting

confidence: 98%

Ultrasound Biomicroscopy of cystic lesions of the iris and ciliary body

Augsburger

Affel²,

Benarosh³

1997

American Journal of Ophthalmology

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“…UBM of ciliary body tumours have been well described. 6,7 Pathognomic features such as a medium to hyperechoic mass within the ciliary body and internal reflectivity were not seen in our patient's UBM images. There were however hypoechoic communicating tubes and sheets (Figure 2, arrows) located within the nasal ciliary body and extending posteriorly into the pars plana.…”

Section: Commentmentioning

confidence: 60%

“…These images are consistent with an abnormal vascular architecture. 7 The appearances are quite distinct from both supra-choroidal fluid collections, which lies more superficially and extensively, and the commonly described ciliary body and iris cysts, which are well circumscribed near-spherical lesions.…”

Section: Commentmentioning

confidence: 93%

Ciliary body arteriovenous malformation?

Lee

Gazzard

2003

Eye

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High-frequency ultrasound biomicroscopy (UBM) has been proven useful in the diagnosis and management of anterior segment pathology.1,2 A case of probable arteriovenous malformation (AVM) of the ciliary body that was imaged with UBM is described. Case reportA 33-year-old male presented with abnormal redness in the left eye associated with symptoms of itch and discomfort for 5 years. He was most disturbed by the cosmetic appearance of persistent dilated vessels ( Figure 1). There was no history of orbital trauma or family history of vascular disorders. Visual acuity (VA) unaided was 20/20 in both eyes. Eye position was neutral with no proptosis. Pupils were isocoric and round, with full extraocular movements. Slit-lamp examination revealed dilated tortuous conjunctival and episcleral vessels in the nasal aspect of the left eye. Intraocular pressures were normal. There was no abnormal iris pigmentation or mass. Fundus examination showed normal retinal vessels. A provisional diagnosis of AVM over the left nasal conjunctiva was made and was initially managed expectantly.UBM revealed hypoechoic 'sheets' and tubular structures (Figure 2, arrows) in the ciliary body corresponding to the position of the overlying dilated conjunctival and episcleral vessels and with possible communications between the deep and superficial portions. These hypoechoic areas were shown to communicate. The iris configuration was normal. There was no ciliary body mass or swelling and the ciliary body processes appeared normal. The patient elected for surgical excision for cosmesis, and this was performed. At the time of surgery, the dilated, tortuous vessels were cauterised and excised without difficulty and a free conjunctival autograft was obtained from the superotemporal bulbar conjunctiva and sutured over the nasal defect. The eye was treated with topical antibiotics and steroids postoperatively.VA was unchanged postoperatively. The patient was happy with the cosmetic result and no recurrence of dilated vessels occurred. UBM repeated 2 weeks postoperatively showed no change in the extent or configuration of the ciliary body hypoechoic areas and no ciliary body swelling or mass. Comment

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“…The sound pen etration at this frequency is limited to only 4 mm. The patients with anterior segment tumours examined with this apparatus by Pavlin [23] had most ly an antero-posterior diameter of the lesion much larger (1608, 1200, 740 microns) than the resolution level of the conventional ultrasound equipment. In the larger tumours of the CB the posterior borders of the process could not be imaged due to limited sound penetration while the precise histologic boundary of the tumour and the tumor cell-type were still below the resolution of the ultrasound biomicroscope, despite the high frequency.…”

Section: Methodsmentioning

confidence: 99%

“…The clinical use of the recently available (1993) high frequency ultra sound biomicroscope [22,23] versus conventional diagnostic ultrasound in the assessment of anterior segment lesions will theoretically be compared and discussed.…”

Section: Introductionmentioning

confidence: 99%

Conventional diagnostic ultrasound of iris lesions

Verbeek

1995

Doc Ophthalmol

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Abstract. Eighty patients, referred for further evaluation of prominent iris lesions, were exam ined with conventional B-mode ultrasound equipment combined with a simplified immersion technique. The axial resolution of this system is about 350 microns. In 20.3% of the cases, the lesion was too small for ultrasound detection. A cystic lesion was diagnosed in 26% and a solid lesion in 53.7% of the patients studied. In 33.4% of the cases, the lesions were not confined to the iris but also appeared in the ciliary body. This last result shows the diagnostic value of the conventional ultrasound examination in the evaluation apparent iris lesions.

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Ultrasound Biomicroscopy of Anterior Segment Tumors

Cited by 181 publications

References 9 publications

Ultrasound Biomicroscopy of cystic lesions of the iris and ciliary body

Ultrasound Biomicroscopy of cystic lesions of the iris and ciliary body

Ciliary body arteriovenous malformation?

Conventional diagnostic ultrasound of iris lesions

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