Optical Coherence Tomography of Choroidal Nevus in 120 Patients

Materin

Current Opinion in Ophthalmology

2005

113

Optical coherence tomography of retinal tumors, such as retinoblastoma and astrocytic hamartoma, reveals full-thickness replacement of the retinal anatomic layers with the tumor and shadowing corresponding to the intralesional calcification. For all intraocular tumors, optical coherence tomography provides valuable information regarding the status of the retina and the retinal pigment epithelium and can be useful in ascertaining reasons for visual loss.

Section: Choroidal Tumor and Choroidal Nevusmentioning

confidence: 99%

Review of optical coherence tomography for intraocular tumors

Materin

Current Opinion in Ophthalmology

2005

113

“…In 2005, Shields and associates analyzed 120 naevi and detected SRF in only 3% of these [10,11] . The author described other common OCT abnormalities overlying the tumour, which included retinal degeneration (42%), thinning (22%), oedema (15%) and pigment epithelial detachment (13%).…”

Section: Discussionmentioning

confidence: 99%

Assessment of indeterminate melanocytic choroidal tumours with optical coherence tomography: A cohort study

Garnier¹,

Grange²,

Kodjikian

2012

JBGC

Background: It is difficult to differentiate large choroidal naevi from small melanomas. The management of patients with such 'indeterminate melanocytic tumours' is controversial. This is because over-treatment of naevi can cause unnecessary visual loss whereas delayed treatment of melanoma may have fatal consequences. Several studies have shown that serous retinal detachment overlying an indeterminate melanocytic choroidal tumour predicts growth of these tumours; however, these studies have mostly been based on ophthalmoscopy. Optical coherence tomography (OCT) facilitates the detection of subtle retinal detachment. It is not known, however, whether minimal retinal detachment is clinically relevant. The aim of our study was to evaluate OCT as a tool for predicting growth of indeterminate melanocytic choroidal tumours.

“…Topography of choroidal naevi J Krohn et al in the posterior fundus, 1,16,17 as well as having a predilection for both the nasal 9 and temporal quadrants. 4,8,15 In our study, the naevi were uniformly concentrated in the posterior pole.…”

Section: Discussionmentioning

confidence: 99%

Topographical distribution of choroidal naevi in the ocular fundus

Krohn

Frøystein

Dahl

2008

Eye

Objective To analyse the topographical distribution of choroidal naevi and to visualise their location in the ocular fundus. Methods Data on the size and location of 210 choroidal naevi were converted into a database of two-dimensional retinal charts by means of computer-drawing software. The geometric centre of each lesion was entered into corresponding sectors of the retinal chart. The location of the naevi was computationally visualised by merging the fundus drawings and displaying the number of overlapping lesions on colour-coded contour maps. Results Five naevi were located exactly between two fundus sectors, and were therefore excluded from the distribution analysis. Ten naevi (5%) were located anterior and 195 (95%) posterior to the equator. A total of 104 naevi (51%) were located in the temporal and 101 (49%) in the nasal hemisphere, and the distribution between the superior and inferior hemisphere was 104 (51%) and 101 (49%), respectively. The distribution did not differ significantly between genders, age groups, or between right and left eyes. More naevi with a diameter of 43 mm were located in the temporal hemisphere (P ¼ 0.0004) and anterior to the equator (P ¼ 0.006) compared with those with a diameter of p3 mm. A similar distribution was found for naevi with overlying drusen. Conclusions Choroidal naevi are uniformly concentrated in the centre of the posterior pole without any significant nasotemporal or superoinferior asymmetry. However, large naevi occur significantly more often in the temporal hemisphere and more anteriorly compared with small lesions.