Abstract
Purpose
To describe a unique case of unilateral serous retinal detachment as the presenting sign of B-cell acute lymphoblastic leukemia (ALL).
Observations
A 74 year old woman presented with right eye blurry vision and was found to have an underlying serous retinal detachment, along with cotton wool spots, inner retinal hemorrhages, and retinal pigment epithelial changes throughout her bilateral fundi. Fluorescein angiography demonstrated bilateral vasculitis and ultrasonography revealed asymmetric thickening and enhancement of the affected eyes’ choroid. This prompted a systemic lab workup and results were suspicious for an underlying hematologic malignancy. The patient was admitted to the hospital for bone marrow biopsy confirming B-cell ALL, underwent intensive intravenous and intrathecal chemotherapy, and was discharged one month later. Follow up appointment in the ophthalmology clinic demonstrated functional and anatomic improvement in the serous retinal detachment and choroidal thickening suggestive of infiltration in her right eye.
Conclusions
SRDs are an uncommon ocular manifestation of leukemia, and even less common as a presenting sign of the disease. A comprehensive literature review demonstrated 11 other cases reported worldwide. We present the first such case with additional findings of leukemic retinopathy, optic nerve and choroidal infiltration, and vasculitis, as well as a complete library of ophthalmic imaging from the patient’s initial presentation.
Importance
A new diagnosis of serous retinal detachment(s) without any obvious cause should raise suspicion for leukemia and prompt further workup. Early recognition of this hematologic malignancy is crucial for prompt initiation of life-saving therapy.
Ocular involvement has been reported in up to 90% of patients with leukemia. The most common ocular manifestation is leukemic retinopathy, characterized by white-centered hemorrhages, intraretinal hemorrhages, retinal vascular sheathing, tortuous and dilated retinal veins, leukemic infiltrates, and cotton wool spots. Other ophthalmic findings are orbital masses, optic nerve infiltrates, episcleritis, iris infiltrates, hypopyon, panuveitis, central retinal vein occlusions, retinal neovascularization, vitreous hemorrhages, retinal pigment epitheliopathy, and choroidal infiltration. Ocular changes in leukemia are most commonly secondary to direct leukemic infiltration of the ocular structures, hematologic abnormalities such as pancytopenia and hyperviscosity, opportunistic infections, or toxicity of chemotherapy used to treat the leukemia.
Serous retinal detachments (SRD) are a less common but well-documented ocular manifestation of leukemia. The majority of case reports have described SRDs as a finding after the systemic diagnosis of leukemia has been made, not as an initial sign. Furthermore, visual symptoms in general are rare as the first presenting sign of leukemia.
We report a patient who presented with unilateral blurry vision due to a SRD as the initial sign of acute lymphoblastic leukemia (ALL).
1
Case report
A 74 year old female presented with right eye subacute visual decline over ten days. She denied eye pain, flashes, and floaters. Her associated symptoms were dizziness, metallic taste, reduced appetite, shortness of breath, and night sweats. She denied fevers, chills, cough, fatigue, abdominal pain, chest pain, mucosal bleeding, infections, and nausea. Her medical history was significant for well-controlled hypertension (on amlodipine), pre-diabetes (last hemoglobin A1C 6.0), hyperlipidemia (on atorvastatin), and rheumatoid arthritis (minimally symptomatic, not on therapy). She denied any recent travel or animal exposures. Of note, the patient reported that she had been under stress lately due to her vision loss, as she was unable to perform her desk job and provides the sole source of income for her family. Ocular history was unremarkable.
Visual acuity was 20/50 in the right eye and 20/30 in the left eye (no improvement with pinhole bilaterally). Intraocular pressures were 13 mmHg in the right eye and 14 mmHg in the left eye. Slit lamp exam revealed no abnormalities, except for visually significant cataracts in both eyes. Fundus examination and photograph of the right eye showed a posterior vitreous detachment (PVD), blunted foveal reflex, retinal hemorrhages in the superior macula and superonasal periphery, and cotton wool spots (CWS) along the inferior arcade, peripapillary region, and superior periphery. Fundus examination and photograph of the left eye showed a PVD and CWS along the inferior arcade, superior arcade, and peripapillary region. Autofluorescence imaging (AF) of the right eye showed hypoautofluorescent patches corresponding to CWS and hemorrhages, a stippled hyperautofluorescent area in the superior macula corresponding to retinal pigment epithelium (RPE) changes, and a generalized mild hyperautofluorescence of the superior macula; in the left eye, there were hypoautofluorescent patches corresponding to CWS ( Fig. 1 ). Optical coherence tomography of the macula (OCT) showed a neurosensory retinal detachment and focal RPE changes in the superior macula in the right eye, and peripapillary thickening of the nerve fiber layer corresponding to the location of a large CWS in the left eye ( Fig. 2 ). Fluorescein angiography (FA) showed early phase multifocal hyperfluoroscent spots of the macula, blockage from hemorrhages, and late phase diffuse small vessel peripheral leakage in both eyes. Interestingly, we did not observe pooling of fluorescein in the late phase ( Fig. 3 ). Ultrasound imaging of the right eye showed no evidence of masses and a slightly thickened choroid compared to the left eye, but no sub-Tenon fluid or “T-sign”. ( Fig. 4 ).
Due to concern for a systemic process, we instructed the patient to have labs drawn the same day, and initial complete blood count results were significant for a white blood cell count of 225.8 (normal 4–11) with blasts, hemoglobin of 5.7 (normal 11.7–15.7), and platelet count of 37 (normal 150–400). Other abnormalities included an erythrocyte sedimentation rate of 50 (normal 0–30), C-reactive protein of 1.3 (normal <0.5), lactate dehydrogenase of >1800 (normal 135–214), uric acid 12.5 (normal 2.5–5.7), and creatinine 1.1 (normal 0.51–0.95). Of note her QuantiFERON and syphilis testing were negative. We instructed the patient to present directly to the emergency department to obtain further workup for a hematologic malignancy and formal hematology consult.
The patient was eventually admitted to the hospital for further studies. Flow cytometry demonstrated a monoclonal population suggestive of B-cell ALL and a bone marrow biopsy confirmed this diagnosis. Her magnetic resonance imaging (MRI) of the brain demonstrated enhancement of the right optic nerve suggesting leukemic infiltration. ( Fig. 5 ). Lumbar puncture revealed an abnormal B cell population but no blasts. The patient was started on systemic chemotherapy, which consisted of intravenous (IV) cyclophosphamide, vincristine, and daunorubicin and oral prednisone. She was also initiated on intrathecal methotrexate therapy due to high suspicion for central nervous system involvement. One month following initial presentation, the patient was discharged from the hospital on a stable chemotherapy regimen and seen in the ophthalmology clinic two days later.
At follow up appointment, the patient noted overall improvement in vision in the primarily affected right eye. Visual acuity was 20/30–3 in the right eye and 20/30–2 in the left eye. Follow up OCT showed interval improvement of the serous retinal detachment in the right eye ( Fig. 6 ). She continues to follow up in vitreoretinal clinic.
2
Discussion
We report a patient who presented with right eye subacute visual decline due to a SRD as an initial sign of B-ALL. This patient was initially evaluated by an outside ophthalmologist, who diagnosed her with central serous chorioretinopathy (CSR) and referred her to our institution for further management. However, her demographic and history were atypical for CSR (except an underlying risk factor of stress), her exam showed CWS and hemorrhages which would be atypical for CSR. Furthermore her FA imaging not only did not show features that are characteristic for CSR (e.g. expansile dot, smokestack, late pooling), but also demonstrated bilateral small vessel vasculitis raising concern for a systemic process. An extensive lab workup to further evaluate for autoimmune, infectious, inflammatory, and malignant causes eventually led to a diagnosis of B-ALL. Thus, her exam findings were consistent with bilateral leukemic retinopathy and a unilateral SRD. Her vasculitis noted on FA may have been due to leukemic infiltration versus her underlying rheumatoid arthritis. Ultrasound imaging with enhancement and thickening of the choroid was suggestive of choroidal infiltration and MRI imaging revealed optic nerve infiltration.
SRDs are uncommon as an ocular manifestation of leukemia, and even less common as a presenting sign of disease. Though they are more common in acute (vs. chronic) leukemia, they are less common in lymphoid (vs. myeloid) subtypes, females and older patients, making our patient an unlikely suspect.
There have only been a few cases worldwide of SRDs as a presenting sign of ALL. We performed a comprehensive literature review of such case reports (PubMed advanced search terms: central serous retinopathy or serous retinal detachment or exudative retinal detachment AND acute lymphoid leukemia or acute lymphoblastic leukemia or acute lymphocytic leukemia) ( Table 1 ). , , Eleven case reports were identified. Most patient were female (8/11, 72.7%) and age distribution ranged from 12 to 75 years old (median: 44). Most patients presented with a chief complaint of bilateral decreased vision. Of note, almost half of the patients did not present with any significant systemic symptoms, highlighting the importance of considering a full workup even in cases of isolated ocular findings concerning for leukemia. All authors reported a fundus exam and/or photograph, nine reported a FA, six reported an OCT, one reported a B-scan ultrasound, and none reported AF images. All patients underwent chemotherapy treatment. Among patients with published follow up data (8/11, 72.7%), all demonstrated functional and anatomic improvement of SRDs.
