Ophthalmological symptoms in a patient with reversible cerebral vasoconstriction syndrome: a case report
Journal of Medical Case Reports volume 15, Article number: 175 (2021)
Reversible cerebral vasoconstriction syndrome is characterized by severe headache with reversible segmental constriction of the cerebral arteries. We present details on a patient with reversible cerebral vasoconstriction syndrome who initially visited an ophthalmologist because of visual symptoms.
A 34-year-old Japanese woman complained of sustained headache and insomnia starting 2 days after her first childbirth. In addition to the severe headache, a visual field defect was also observed 10 days later. Best corrected visual acuity at the initial visit was 20/20 and 20/25 for the right and left eye, respectively. Exudative retinal detachment was noted surrounding both optic heads. Visual field testing revealed left homonymous hemianopsia, while magnetic resonance imaging demonstrated the presence of edema and infarction of the bilateral basal nuclei and right occipital lobe. The homonymous hemianopsia and exudative retinal detachment recovered immediately after treatment with a free-radical scavenger and anticoagulant. There has been no recurrence of symptoms during the 4 years of follow-up.
We report a case of reversible cerebral vasoconstriction syndrome with ophthalmological symptoms that were reversible, including serous retinal detachment and homonymous hemianopsia.
The incidence of stroke in the peripartum and postpartum periods has increased in recent years and might correspond to the observed increase in pregnancy-induced hypertension [1, 2]. There are several conditions associated with hypertension, including posterior reversible encephalopathy, reversible cerebral vasoconstriction syndrome, and cerebral venous sinus thrombosis, along with an increased risk of stroke and vascular dementia . Reversible cerebral vasoconstriction syndrome (RCVS) is characterized by reversible constriction of cerebral arteries associated with severe headache [3, 4], which is referred to as thunderclap headache . There are various precipitating factors, with the most common being postpartum  and exposure to vasoactive substances [4, 7]. Patients with RCVS usually visit emergency rooms because of the severe headache. However, postpartum patients with RCVS usually visit obstetricians. Visual deficits have only been reported in 29% of RCVS patients , and ophthalmological findings have yet to be reported in detail. In this report, we present ophthalmological findings for a patient with RCVS who visited our clinic because of visual field defects.
A 34-year-old Japanese woman suffered from headache and insomnia starting 2 days after her first childbirth. During her pregnancy, she did not experience any complications, including pregnancy-induced hypertension. However, postpartum hypertension was noted (160–170 mmHg/90–100 mmHg). She visited our clinic complaining of a visual field defect that had appeared 8 days after her headache onset.
Corrected visual acuities for the right and left eye were 20/20 and 20/25, respectively. Intraocular pressure in both eyes was 15 mmHg. The anterior segments and lenses appeared normal. Multiple yellowish dots in the deep retina were noted around the optic nerve head in both eyes (indicated by the arrows in Fig. 1), and resembled Elschnig’s spots and ischemic choroidal infarcts . Optical coherence tomography (OCT) demonstrated exudative retinal detachments around the optic nerve head in both eyes (Fig. 2). Visual field testing conducted by standard automated perimetry showed left homonymous hemianopsia (Fig. 3a).
We referred the patient to a neurologist for neurological examinations regarding the headache and left homonymous hemianopsia. Results from serum biochemistry tests and a cerebrospinal fluid examination were normal. Magnetic resonance imaging (MRI) revealed edema in the basal ganglions and right occipital lobe (Fig. 3b).
At day 2 after starting treatments with an infusion of a free-radical scavenger (edaravone, 60 mg per day) and anticoagulant (heparin sodium, 10,000 U per day), the left homonymous hemianopsia disappeared (Fig. 4a) and MRI showed subsidence of the brain edema (Fig. 4b). The treatment was continued for 3 days, and the patient's symptoms improved. After improvement of the visual symptoms, cerebral angiography appeared normal (Fig. 5), and the yellowish dots in the deep retina (Fig. 6a) and exudative detachments around the optic nerve heads were no longer observed (Fig. 6b). There has been no recurrence of symptoms during the 4 years of follow-up.
The patient gave consent for her clinical details and clinical images to be published.
RCVS is an acute and self-limiting disease commonly accompanied by acute, severe headache. The most significant contributor to RCVS is being postpartum [10,11,12], with hypertension also reported to be a contributing factor . The present patient suffered from both hypertension and severe headache at 2 days after her first childbirth. However, there was improvement in the headache and visual symptoms within 2 weeks. The clinical course of this patient was consistent with that for RCVS.
On cerebral angiography, RCVS can present as segmental narrowing and dilation of one or more arteries . However, vasoconstriction in cerebral angiography is not essential in the diagnosis of RCVS, as the sensitivity has been reported to be only about 70% . The normal angiography observed in RCVS patients may be due to the timing, as vasoconstriction may not be revealed during the 2 weeks after the initial clinical onset . The normal cerebral angiography observed in our patient occurred after the improvement of symptoms, so the vasoconstriction could have possibly been in remission. The presence of hemorrhage or aneurysm should be ruled out for a diagnosis of RCVS [8, 16]. Neither hemorrhage nor aneurysm was found in our patient, who was correctly diagnosed with RCVS.
Because of visual deficits, the patient presented to our clinic instead of visiting either the emergency room or her obstetrician. Blurred vision has been previously reported to be one of the clinical manifestations of RCVS that is due to brain lesions [8, 10, 12, 13, 17]. Although homonymous hemianopsia was previously reported in a case examined using a confrontation visual field test , detailed ocular findings have not been reported in other prior RCVS cases. However, deterioration of visual acuity and visual field defects have been reported in patients with postpartum posterior reversible encephalopathy syndrome (PRES) [18,19,20], which shares several common clinical and radiologic features with RCVS . Although PRES frequently exhibits a symmetric distribution of changes in the parietooccipital lobes with a moderate headache, these findings were not consistent with the results found in our patient. Vasoconstrictive involvement of the parietooccipital lobes might be a mechanism for severe visual deficits , and is one possible explanation for the homonymous hemianopsia in our patient.
Exudative retinal detachments have also been reported in PRES patients with hypertension  and in pregnancy . Previous studies have reported finding constriction of choroidal arterioles in the acute ischemic phase of hypertension , followed by patchy filling of choroidal capillaries  and dysfunction of the retinal pigment epithelium , which induced exudative retinal detachment. The exudative retinal detachment found in our patient may also have been due to the same mechanism, with the presence of the Elschnig’s spots supporting the constriction of choroidal arterioles.
Excellent clinical outcome has been reported in 80% of patients , with fatalities reported in less than 1% of RCVS cases [8, 13, 16]. However, there has been a higher nonbenign outcome rate reported in postpartum RCVS, with death in 20% and residual deficits in 30% of the cases . Thus, close observation of patients with postpartum RCVS is necessary. In addition, any abnormal ocular findings on diagnostic examinations should be considered potential visual defects associated with the initial symptoms of RCVS.
In this study, we reported on a patient with a visual defect that was an initial symptom of RCVS. This is the first report to present ophthalmological findings for RCVS. Although RCVS is known to have a good prognosis, sometimes stroke or neurological sequelae can complicate the condition, and thus, close observation of these patients is necessary.
Availability of data and materials
The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
Reversible cerebral vasoconstriction syndrome
Optical coherence tomography
Magnetic resonance imaging
Posterior reversible encephalopathy syndrome
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Hayashi, R., Hayashi, S. & Machida, S. Ophthalmological symptoms in a patient with reversible cerebral vasoconstriction syndrome: a case report. J Med Case Reports 15, 175 (2021). https://doi.org/10.1186/s13256-021-02746-0