Utilization of Optical Coherence Tomography in the Evaluation of Cherry Hemangiomas
June 2016 | Volume 15 | Issue 6 | Original Article | 713 | Copyright © 2016
Adam S. Aldahan BS,a Stephanie Mlacker BS,a Vidhi V. Shah BA,a Lucy L. Chen MD,a Keyvan Nouri MD,a and James M. Grichnik MD PhDa,b
aUniversity of Miami Miller School of Medicine Department of Dermatology and Cutaneous Surgery, Miami, FL
bIndian River Medical Center: Scully-Welsh Cancer Center, Vero Beach, FL
Cherry hemangiomas are common vascular proliferative lesions that can be concerning from a cosmetic perspective. Laser therapy is often used to eradicate cherry hemangiomas, but some lesions require multiple treatments or do not resolve at all. The suboptimal response to laser treatment may be due to limitations in penetration depth by vascular lasers such as the pulsed dye laser. Optical coherence tomography is a low-energy, light-based imaging device that can evaluate the depth and extent of vascular lesions such as cherry hemangiomas by allowing visualization of tissue structure and blood vessel architecture, which cannot be appreciated by clinical or dermatoscopic examination alone. We present optical coherence tomography images of a cherry hemangioma to demonstrate the precision and resolution of this imaging modality. Optical coherence tomography provides valuable information that has the potential to predict response to laser therapy without unnecessary attempts. Future prospective studies will determine its value for this purpose.
J Drugs Dermatol. 2016;15(6):713-714.
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Cherry hemangiomas are common acquired lobular capillary proliferations that increase in prevalence with age.1 Although they are usually asymptomatic, some cases raise a cosmetic concern and may require treatment. Vascular lasers such as the pulsed dye laser (PDL) are often used for this purpose, with the overall success of treatment determined by factors such as lesion depth.2 For example, the PDL has limited penetrance beyond 1.25 mm due to its relatively short wavelength.3
Estimating the lesion depth based on clinical and dermatoscopic examination is difficult and unreliable, and treating with a trial-and-error approach inconveniences both the physician and patient in cases where the lesion is too deep. Therefore, obtaining an accurate depth measurement is crucial in helping the clinician predict treatment outcomes. Imaging modalities such as optical coherence tomography (OCT) may offer a solution to this problem, thereby reducing the burden of unsuccessful or inadequate treatment.
OCT uses low-energy light to visualize structures in the skin by recording the light as it reflects off the tissue at various depths. The OCT device has a scan diameter of 6 mm and can visualize structures up to 2 mm in depth (Michelson Diagnostics, Ltd, UK). This device produces two distinct images: one with a cross-sectional view and a second with an en face view (parallel to the skin surface). Additionally, the device contains a dynamic feature that records motion such as blood flow. This allows us to quickly and painlessly image vessel architecture, measure vessel diameter, and map the depth of lesions in vivo.
To illustrate the potential of dynamic OCT, we present a cherry hemangioma on the arm of a 25-year-old woman with light skin. The en face view (Figure 1c) allows us to appreciate the horizontal extent of the lesion. The lobular collections appear red, indicating movement, or blood flow in this case. The cross-sectional view seen in Figure 2 allows us to measure the depth of the lesion to the nearest hundredth of a millimeter. In addition to pre-treatment assessment, OCT can be used adjunctively with lasers to monitor change in lesions over time.
The ability to easily measure the horizontal and vertical extent of vascular lesions is unique to OCT and cannot be appreciated with other means such as clinical photos or dermoscopy. As seen in this case, OCT can be a useful tool in practice to help predict the results of laser treatments. Additionally, it can be used alongside treatments to monitor the change in lesions over time. While seemingly promising, prospective clinical trials will be necessary to substantiate the value of OCT in predicting treatment outcomes.
All authors state no relevant conflicts of interest, financial or otherwise.