En-face OCT and OCT angiography analysis of macular choroidal macrovessel

Carlos A. Moreira-Neto, Luiz H. Lima, CLAUDIO MAURICIO ZETT LOBOS, Raphael Pereira, Carlos Moreira

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Purpose: To analyze en-face optical coherence tomography (OCT) and decorrelation signals on OCT angiography (OCTA) in two cases of macular choroidal macrovessel (MCM). Observations: Case report. Both the 64-year-old and 71-year-old females presented for a routine evaluation, and multimodal imaging analysis, including color fundus photography, indocyanine green angiography (ICG), spectral-domain optical coherence tomography (SD-OCT) and OCTA, was performed to diagnose a MCM. En-face OCT, en-face OCTA and decorrelation signals were analyzed through the MCM. In both reported cases, color fundus photograph revealed a serpiginoid lesion in the temporal macula. Red-free imaging enhanced the appearance of this lesion resembling a dilated choroidal vessel. Cross-sectional OCT showed an enlarged choroidal vessel causing elevation of the retinal pigment epithelium (RPE) within the fovea. En-face OCTA with segmentation below the choriocapillaris enhanced the MCM delineation. En-face OCT with segmentation below the choriocapillaris showed MCM with a greater distinctness than the en-face OCTA imaging. Decorrelation signals were not observed within MCM on cross-sectional OCTA. Conclusion and importance: En-face OCT and decorrelation signals on OCTA may have diagnostic value in distinguishing macular choroidal macrovessel from other choroidal vascular diseases.

Original languageEnglish
Article number101012
JournalAmerican Journal of Ophthalmology Case Reports
StatePublished - Mar 2021
Externally publishedYes


  • Choroidal macrovessel
  • Decorrelation signals
  • En-face optical coherence tomography
  • Multimodal imaging
  • Optical coherence tomography angiography


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