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Clin Ophthalmol. 2010; 4: 427–431.
Published online 2010 May 14.
PMCID: PMC2874269

Periorbital edema secondary to imatinib mesylate

Abstract

Imatinib mesylate (Gleevec®) is a well-established pharmacologic treatment for all phases of chronic myeloid leukemia and for advanced gastrointestinal stromal tumors (GISTs). Edema-related side effects are relatively common in imatinib therapy with the periocular skin representing one of the most common sites for localized edema. While the adverse effect of periorbital edema with imatinib is well documented in the oncology literature, there is limited reference to this common reaction in the ophthalmology literature. We report two patients with upper eyelid edema associated with imatinib therapy who required surgical intervention to ameliorate significant visual field obstruction. We highlight the details of each case including the histopathologic findings of excised redundant skin followed by a thorough review of the literature on imatinib related periorbital edema.

Keywords: imatinib mesylate, gleevec, edema, periorbital edema, tyrosine kinase inhibitor

Introduction

Imatinib mesylate (Gleevec®) is a well-established pharmacologic treatment for all phases of chronic myeloid leukemia (CML) and for advanced gastrointestinal stromal tumors (GISTs).13 Mechanisms of action include selective inhibition of several tyrosine kinases, including the bcr-abl fusion protein in CML and the c-kit proto-oncogene in GIST.2,4 The most frequently reported side effects include nausea/vomiting, musculoskeletal pain, diarrhea, fatigue, rash, and edema. The eyelids and periocular skin are one of the most common areas where localized edema may arise, but edema may regularly occur elsewhere, including the lower extremities and face. Severe generalized fluid retention, pulmonary edema, pericardial effusion, pleural effusion, cerebral edema, ascites, or anasarca is rare.5,6 Other serious side effects are also relatively uncommon, including Stevens–Johnson syndrome, hemolytic anemia, internal hemorrhage, and hepatotoxicity.7,8 Additional rare ocular side effects have been reported, including cystoid macular edema, optic disc edema, and macular ischemia.912

While the adverse effect of periorbital edema with imatinib is well documented in the oncology literature, there is limited reference to this common reaction in the ophthalmology literature.1315 The eyelid edema is typically mild, worse in the morning, and is not an indication for cessation of imatinib therapy.16 In only two previously reported cases was the edema severe enough to require surgical intervention.15,16

We report two patients with upper eyelid edema associated with imatinib therapy. Both patients required surgical intervention to ameliorate significant visual field obstruction. With only two previous sources in the literature describing the histopathology of imatinib-induced edema,15,16 the histopathology of these cases is reviewed, including findings of lymphangiectasia not reported previously.

Case report 1

A 64-year-old Caucasian female was referred to our oculo-plastics service for a recent exacerbation of long-standing periorbital swelling. She had been diagnosed with CML 10 years previously, and developed mild upper eyelid swelling immediately following initiation of imatinib treatment several years prior to presentation. Four months prior to referral to us, the patient’s dose of imatinib was increased from 400 to 600 mg per day in order to induce remission of accelerated CML. Several weeks following the increase in her imatinib dose, the patient reported severe periorbital swelling, ocular heaviness, frequent bilateral ocular discharge with irritation, and occasional morning diplopia lasting several hours that she observed to be correlated with her degree of swelling. Two weeks before our evaluation, she remitted to the chronic phase of CML, and her dose of imatinib was decreased to 500 mg per day, with a minor improvement in symptoms.

External examination (Figure 1A) revealed bilateral ptosis with a margin-reflex distance (MRD) of 1 mm OD and 0.5 mm OS, significantly edematous upper eyelid skin, normal levator function of 17 mm OU, no lagophthalmos, and angular blepharitis in the left lateral canthus. Visual acuity was 20/25 – 2 OD and 20/40 + 2 OS. Pupils, motility, slit-lamp, tonometry, and funduscopic examination findings were unremarkable.

Figure 1
A External photograph of patient 1 preoperatively, demonstrating significant upper eyelid edema bilaterally, associated with imatinib therapy. B One-month postoperative photograph, showing marked improvement in eyelid appearance following blepharoplasty. ...

We prescribed erythromycin ointment for blepharitis and advised the patient to follow up in clinic for re-evaluation, realizing a potential for greater improvement in symptoms following the recent decrease in her imatinib dosage. Upon her return to clinic six weeks later, the patient reported little relief of visual obstruction or irritation. Goldmann ptosis visual fields performed at that time demonstrated significant superior visual field obstruction to 10° OD and 17° OS, with improvement to 38° OD and 41° OS with manual elevation of the upper eyelids.

With the patient’s CML maintained on imatinib therapy and little relief of ocular symptoms following dose reduction, the decision was made to proceed with bilateral upper eyelid blepharoplasty. At her one-month post-operative appointment, the patient reported a dramatic improvement in ocular irritation, ocular discharge, morning diplopia, and superior field vision obstruction. Examination showed well-healed incisions and marked improvement in eyelid appearance (Figure 1B). During a telephone interview 50 months following surgery, the patient reported only mild periorbital swelling without visual significance, and she continues on imatinib 600 mg daily.

Microscopic examination of the two excised specimens of upper eyelid tissue (Figure 2) exhibited edema and chronic inflammation, consistent with the histopathology of imatinib-induced eyelid edema previously reported.15,16 The inflammation bore an apparent affinity for perifollicular regions. Lymphangiectasia was also noted.

Figure 2
Histopathology of excised eyelid skin (H&E stain). A: Low-power view showing diffuse edema in the dermis (magnification, x20). B: At higher magnification (x200), dilated lymphatic channels (lymphangiectasia, double-headed arrows) may be appreciated. ...

Case report 2

A 66-year-old Caucasian male was referred to our oculoplastic service for slow progression of chronic eyelid swelling that he had first noticed five years previously following initiation of imatinib for advanced GIST with metastasis to the liver. The patient ultimately sought oculoplastic evaluation because he began frequently “bumping his head” as a result of severe superior field vision obstruction. The patient denied ocular discharge, epiphora, or diplopia. At the time of presentation, his imatinib dose was 600 mg per day.

On examination, the patient had marked bilateral upper eyelid ptosis and edema (Figure 3A). MRD measured 1.5 mm OD and 2 mm OS, with normal levator functions of 17 mm OD and 16 mm OS. With the exception of mild cataracts OU, the remainder of the examination was unremarkable. Goldmann ptosis visual fields exhibited severe superior visual field obstruction to −16° OD and −13° OS that improved to 32° OD and 33° OS with manual elevation.

Figure 3
A External photograph of patient 2 preoperatively, demonstrating significant upper eyelid edema bilaterally. B One month postoperative external photograph, showing marked improvement in eyelid appearance following blepharoplasty and ptosis repair.

Considering his requirement to continue imatinib therapy and the severity of his visual field obstruction, the patient opted to undergo bilateral upper eyelid blepharoplasty with ptosis repair. At his one-month postoperative follow-up, the patient reported dramatic improvement in vision, periocular swelling, and overall ocular comfort. Examination revealed well-positioned eyelid margins, no lagophthalmos, and mild residual edema of the left upper eyelid (Figure 3B). During a telephone interview 52 months following surgery the patient reported no residual periorbital edema and continues on imatinib 600 mg daily.

Microscopic examination of the resected eyelid tissue showed findings identical to those observed in case report 1.

Discussion

Early Phase I and II trials of imatinib for CML and GIST, along with subsequent studies examining the side effects of imatinib, report incidence rates of edema in the range of 39%–74.1% in all patients on the medication.1,2,4,13,17 Results specifying edema location report the periocular region as the most common site of edema, present in 47.6%–70% of patients taking imatinib.2,13,17 The causal role of imatinib in periorbital edema is strongly suggested by the high frequency of this side effect and the well-documented resolution of periorbital edema in 12 patients following cessation of the drug as a result of severe myelosuppression.13 When rechallenged with equivalent or reduced doses of imatinib after bone marrow recovery, periorbital edema recurred in eight of the 12 patients.

Valeyrie et al17 found that the mean dose of imatinib among patients suffering fluid retention events (471 ± 113 mg) was significantly greater than the mean dose among patients without edema (395 ± 108 mg). Throughout the literature, the frequency of edema related to imatinib appears to be dose-related. Fraunfelder et al13 reported that 10 of 11 patients (91%) treated with imatinib doses >400 mg developed periorbital edema, compared with only 66 of 94 patients (70%) treated with doses <400 mg. Our patients were both on a dose of 600 mg per day at the time of presentation. In a series reported by Fraunfelder,13 the onset of periorbital edema occurred at an average of 68 ± 48 days after initiation of treatment (range 1–444 days), and no statistically significant correlation was found between dose and time of onset. Although it has been suggested that female sex and age >65 years are risk factors for fluid retention and may predispose to imatinib-induced edema,5 Valeyrie et al17 found no significant associations between age, sex, and the incidence of edema attributable to imatinib.

Although the mechanism for imatinib-induced periorbital edema remains unclear, the most popular theory involves the inhibition of platelet-derived growth factor receptor (PDGFR) signaling by the drug. PDGFR signaling has been shown to increase the interstitial fluid pressure in the dermis of rodents.18 The inhibition of the PDGFR signaling cascade by imatinib in human patients may similarly result in increased capillary permeability and extravasation of fluid. Preferred localization of edema to the periorbital skin is not likely to be explained exclusively by this theory, considering only 29% of patients with periorbital edema suffered from concomitant peripheral edema.13 It has been suggested that the dense collagenous orbital septum and poorly developed lymphatic system of the orbit predispose this region to edema.16 However, imaging studies in patients with imatinib-induced periorbital edema show the edema to be predominantly isolated to the preseptal region, which would suggest that the absence of orbital lymphatics may not be relevant in edema formation. In two previously reported cases showing histopathology of imatinib-induced eyelid edema, findings included loose dermis along with mild acute and chronic inflammation.15,16 In our cases, we found the inflammation to have an affinity for hair follicles, and we also found lymphangiectasia. Although nonspecific, lymphangiectasia correlates with the edema seen clinically.

Periorbital edema secondary to imatinib is typically mild to moderate and can usually be managed conservatively. While there is little scientific data to guide physicians, severe cases of periorbital edema have been treated by various means, including prescribing a low-salt diet, topical 1% hydrocortisone, 0.25% topical phenylephrine, or oral diuretics.5,6 Severe periorbital edema is not an indication for cessation of imatinib. For cases of visually obstructive periorbital edema refractory to medical management, surgery remains a viable option. In our cases and the previous cases of imatinib-induced periorbital edema requiring surgery, satisfactory outcomes were sustained throughout the follow-up period, without recurrence of significant edema despite continuation of imatinib therapy.15,16 Follow-up in previously published cases requiring surgery was 17 months and six months, while our patients reported no significant recurrence of periorbital swelling at 50 and 52 months postoperatively.

Because of the risk of relapse, it is currently recommended that imatinib therapy be continued indefinitely in patients with CML.19 Given that imatinib is used for all phases of CML, as well as the growing use of imatinib for GIST and in a variety of dermatologic conditions,2,3,7 an increasing prevalence of imatinib-induced periorbital edema may be expected in the future. The ophthalmologic community should be cognizant of this relatively common side effect.

Footnotes

Disclosures

The authors report no conflict of interest in this work.

References

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