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Endogenous Fusarium Endophthalmitis inHematologic Malignancy
Short Case Series and Review of Literature
Sharad Suryakant Malavade, DNB (Ophth), MPH,*Þ Mo Mai, MD,þ Peter Pavan, MD,*Georgina Nasr, MD,§ Ramon Sandin, MD, MS,|| and John Greene, MD§||
Abstract: Patients with hematologic malignancy are in a state ofimmunocompromise either due to the disease or as result of treatment.They are at risk for opportunistic fungal infections. The usual agents im-plicated are Aspergillus and Fusarium species. Patients with infectedskin lesions are at risk of endogenous dissemination, and the eye canbe one of the potential sites of infection due to hematogenous Fusariumdissemination. We describe 3 immunocompromised patients with hemato-logic malignancy who developed endogenous fusarial endophthalmitis.
Key Words: Fusarium, endogenous endophthalmitis, hematologicmalignancy
(Infect Dis Clin Pract 2013;21: 6Y11)
Patients with hematologic malignancy under treatment are ina state of immunocompromise either due to the disease or
as result of treatment. A common complication in these patientsis fungal infection. Fusarium species have recently emerged as acommon pathogenic fungus next to Aspergillus in immunocom-promised patients. Infections due to Fusarium are a diagnosticdifficulty just like aspergillosis, with the exception that bloodcultures can aid in the diagnosis of fusarial infection in halfthe affected patients. There is no definitive treatment for fusar-iosis yet, and Fusarium exhibits varying susceptibility to vari-ous antifungal agents. Consequently, high mortality is observedin these patients. We describe 3 patients who developed dissemi-nated fusariosis with endophthalmitis over a period of 12 yearsfrom 1999 to 2010.
CASE REPORTS
Case 1A 62-year-old Hispanic man with history of primary refracto-
ry stage IIIB Hodgkin disease was admitted for high-dose chemo-therapy followed by autologous peripheral stem cell transplantationin 2000. Following admission, the patient was administered topote-can, ifosfamide, mesna, and etoposide chemotherapy per standardprotocol. Following this, the patient became neutropenic, devel-oped severe mucositis, and was put on total parenteral nutritionand patient-controlled analgesia. The patient also developed neu-tropenic fever with no known source of infection and was admin-istered neutropenic fever protocol with vancomycin and cefepime
with additional prophylactic acyclovir and fluconazole. Ten daysafter stem cell infusion, the patient developed a right-foot rednessand swelling. Sporadic papular lesions were noted on the trunkand lower extremities. He was febrile despite the antibiotics. A bi-opsy of the foot yielded Fusarium, and amphotericin B was ini-tiated. No susceptibility testing of the mold was done. The rightfoot responded very well, and the fever resolved. The patientengrafted on day 13, and his general condition improved rapidly.However, he developed a right-eye conjunctival infection thatappeared to be conjunctivitis. A computed tomogram of thesinuses did not show abnormalities. A detailed metastatic evalua-tion for fungal infection was not done. The patient gradually de-veloped blurry vision. The right eye had hand-movementvision, and the retina was poorly visualized. Vision in the lefteye was 20/100, and posterior segment evaluation revealed exu-dates and cotton wool spots. Right-eye endophthalmitis was sus-pected, and an emergency retina consult was requested. Thepatient underwent a right-eye pars plana vitrectomy with intravi-treal injection of 0.005 mg of amphotericin B in 0.1 mL and1 mg of vancomycin in 0.1 mL. Periocular injections of solutionscontaining 25 mg/mL of vancomycin, 0.5 mg/mL of amphoteri-cin B, 200 mg/mL of ceftazidime, and 8 mg/mL of dexametha-sone were administered. The vitreous biopsy grew mold (Fig. 1).The patient was administered intravenous itraconazole andamphotericin B. Topical therapy included topical vancomycin50 mg/mL, ceftazidime 50 mg/mL, amphotericin B, and nata-mycin. The patient died because of refractory leukemia and dis-seminated fusariosis while on this treatment.
Case 2A 66-year-old man with acute myeloid leukemia (AML sub-
type M2) was admitted for reinduction and chemotherapy withwhite cell count of 8.33 � 103/KL, hemoglobin of 9.2g/dL, he-matocrit of 27.8%, and platelet count of 20 � 109 platelets/L.He had an absolute neutrophil count of 3920 and 12% blasts.The patient was noted to have a purplish lesion on the right fifthtoe. He was administered cladribine, cytarabine, and granulo-cyte colony-stimulating factor per protocol. Because this thera-py could cause neutropenia, increasing the risk of fungalinfection, the patient was placed on liposomal amphotericin Band voriconazole. The patient received imatinib for 14 days.The foot lesion worsened, and imaging studies suggested possi-ble osteomyelitis. An orthopedic consultation recommendedamputation of the right fifth toe, which was done on the 20thday after admission. Cultures revealed Fusarium species as wellas Escherichia coli. No susceptibility testing was done forFusarium. The patient remained on liposomal amphotericin Buntil he developed renal insufficiency; thereafter, he was treatedwith voriconazole and meropenem. No metastatic evaluation forfungal infection was done. He underwent bone marrow aspira-tion and biopsy after 2 weeks of induction to assess responsethat showed less than 5% cellularity and less than 5% blasts
REVIEWARTICLE
6 www.infectdis.com Infectious Diseases in Clinical Practice & Volume 21, Number 1, January 2013
From the Departments of *Ophthalmology and †Global Health, Universityof South Florida, Tampa, FL; ‡Ross University School of Medicine, Common-wealth of Dominica, West Indies; §Department of Infectious Diseases, Uni-versity of South Florida; and ||Moffitt Cancer Center, Tampa, FL.Correspondence to: John Greene, MD, Infectious Diseases and Infection
Prevention, Moffitt Cancer Center, 12902 Magnolia Dr, MailstopFOB-3, Tampa, FL 33612. E-mail: [email protected].
The authors have no funding or conflicts of interest to disclose.Copyright * 2013 by Lippincott Williams & WilkinsISSN: 1056-9103
Copyright © 2013 Lippincott Williams & Wilkins. Unauthorized reproduction of this article is prohibited.
consistent with aplasia. The patient was administered granulo-cyte colony-stimulating factor, which was continued untilthe absolute neutrophil count reached 3000 cells/KL. About12 days after the bone marrow biopsy while on voriconazole,meropenem, and daptomycin, the patient developed right-eyeinjection, itchiness, and clear discharge along with blurred vi-sion. The patient received a dose of methylprednisolone. Thenext day, ophthalmic evaluation revealed a worsening of thevitritis. A vitreous tap was done and came out dry. Aweek later,a vitrectomy yielded rare fungal elements on cytopathology,fungal elements on Gram stain, and more than 100 colonies ofFusarium species on chocolate and Sabouraud agar inoculatedwith the vitreous. Intravitreal injections of voriconazole andamphotericin B were given at the time of vitrectomy. Steroidswere discontinued. The patient developed renal failure and par-oxysmal atrial tachycardia as well as deep venous thrombosisof the right lower limb diagnosed 12 days after admission,which was managed with an inferior venous cava filter in viewof a low platelet count making him a poor candidate for antic-oagulation. The patient further developed a retinal detachmentof the right eye despite a decrease in the size of the fungalinfiltrate in the vitreous (Fig. 2). Retinal reattachment was at-tempted but failed, and the patient ultimately underwent right-eye enucleation.
Case 3Hewas a 46-year-old Hispanic man with acute lymphoblas-
tic leukemia (ALL) with central nervous system involvement,refractory to treatment, and complicated by brain lesions consis-tent with Toxoplasma versus fungal mold. He had a history ofculture-diagnosed Candida infection in the liver, Fusarium in-fection of the skin, and Fusarium and Aspergillus infection inhis sinuses for which he was treated with long-term voricona-zole. He developed a wrist lesion on which a biopsy was per-formed, which was found to be Fusarium and was treated withamphotericin B. The lesion resolved, and he developed periorbitalcellulitis and sinusitis that was found to be caused by Aspergillusand Fusarium. This was treated with amphotericin B and vori-conazole, leading to resolution. He then developed multiplebrain abscesses, thought to be mold or toxoplasmosis, and hewas continuously on voriconazole and co-trimoxazole, whilehis ALL progressed. He had right-eye involvement with a lesionthat looked like fungal retinitis. The patient was advised to seekan ophthalmologic evaluation, but did not follow up. Subse-quent ophthalmic outcome is unknown. In view of the clinicalpresentation and the clinical course, the patient probably hadmold endophthalmitis most likely due to Fusarium species.
DISCUSSIONEndogenous endophthalmitis accounts for only 2% to 8%
of cases of endophthalmitis and usually occurs in a relativelyimmunocompromised state.1 Cancer was found to be an under-lying condition in 7% of endogenous endophthalmitis in a caseseries by Leibovitch et al.2 The most common agents identifiedas causes of endogenous endophthalmitis have been Candidaspecies followed by Aspergillus species in various studies.3Y5
Endogenous fungal endophthalmitis is a known complicationof disseminated fungal infections. Feman,6 in a review of litera-ture, reported the frequency of endogenous fungal endophthal-mitis among patients with systemic fungal infections to varybetween 9% and 45%, whereas review of the author’s own casesindicated less than 2% of patients with disseminated fungalinfections had endophthalmitis. Most of their cases yieldedCandida species when cultured. Immunocompromise and intra-venous drug use are the 2 most common causes of endogenousendophthalmitis due to molds.7 Riddell,8 in a review of litera-ture of endogenous Aspergillus endophthalmitis from 1949 to2001, found underlying predisposing conditions to be intrave-nous drug use (27%), solid organ transplant (23%), chronic lungdisease (17%), corticosteroid treatment (43%), hematologic ma-lignancy (8%), and other malignancy (1%). Another study of23 cancer patients with fungal endophthalmitis confirmed thepropensity of cancer patients with mold endophthalmitis to havea hematologic malignancy. One hundred percent of the patientswith mold endophthalmitis (n = 15) had a hematologic malig-nancy; Fusarium species and Scedosporium apiospermum werethe most common offending agents.9 This, and other studies, al-so found that mold endophthalmitis is more frequently observedin patients after stem cell transplantation, and most of them hadactive malignancy at the time of the fungal endophthalmitis.9Y11
We observed similar findings in our 3 patients. All of themhad active hematologic malignancy at the time of diagnosis, andone had undergone a stem cell transplantation (case 1). The pre-senting symptom in our patients was conjunctival injection in2 cases. Diminution of vision was present with conjunctival in-jection and watering in 1 patient. All 3 patients in our reviewhad right-eye involvement, which is the most common eye tobe affected because of the more proximal and direct blood flowto the right carotid system.7 Diagnosis of Fusarium endophthal-mitis requires a high index of suspicion and can be difficult evenwith vitreous biopsy, and culture of the primary site should besought for identification. The primary site of disseminatedfusariosis resulting in endogenous endophthalmitis is generallythe skin, gastrointestinal tract, or the respiratory tract.12Y15 Theskin was the confirmed primary site in 2 of our cases (cases1 and 2), and the respiratory tract (sinuses) and/or skin wasthe probable focus in 1 case (case 3).
FIGURE 1. Hyaline septate fungal hyphae of Fusarium withrandom branching (case 1).
FIGURE 2. Right-eye endogenous Fusarium endophthalmitis withretinochoroidal involvement, retinal detachment, and vitrealbreakthrough with hemorrhage (case 2).
Infectious Diseases in Clinical Practice & Volume 21, Number 1, January 2013 Endogenous Fusarium Endophthalmitis
* 2013 Lippincott Williams & Wilkins www.infectdis.com 7
Copyright © 2013 Lippincott Williams & Wilkins. Unauthorized reproduction of this article is prohibited.
TABLE
1.CaseRe
portsof
Endo
geno
usFusariu
mEn
doph
thalmitis
Reference
No.
Cases
Visual
Outcom
eSurvival
Postdiagn
osis
Underlying
Con
dition
Systemic
Antifungals
Primary
Site
Ocular
Procedures
Culture
Positive
forVitrectom
y
Culture
Positivefor
PrimarySite
Cho
etal25
1V
VALL
VSkin
Vitrectomy
Fusarium
solani
F.solani
Lieberm
anetal26
1Enu
cleatio
nV
Steroids
Noantifun
gal
agents
VVitrectomy
F.solani
V
Anaissieetal27
1Patient
died
2wk
Chron
icmyelogeno
usleuk
emia
Amph
otericin
BHard palate
and
maxillarysinu
s
VV
Fusarium
oxyspo
rum
Anaissieetal27
1Patient
died
7d
Multip
lemyeloma
Amph
otericin
Bandrifampin
Fourth
leftfing
erV
VF.oxyspo
rum
Venditti
etal28
1Lossof
vision
VAML
Intravenou
sam
photericin
B,
5-fluorocytosine
Skin
VV
Blood
cultu
repo
sitiv
efor
F.solani
Com
haire-
Poutchinianetal29
1Partialvisual
recovery
(4/100
),developm
ent
ofcataract
VSteroids,
kidn
eyinfection
Treatment:
amph
otericin,
5-fluorocytosine;
prop
hylaxis:
itracon
azole
Kidney/skin/
urinarytract
VFusarium
V
Robertson
etal30
1Enu
cleatio
nV
AML
Amph
otericin
BV
VFusarium
VLou
ieetal31
14/20
036
dAtypical
refractory
AML
Amph
otericin,
flucon
azole
Unk
nown
Vitrectomy
with
intravitreal
amph
otericin
B
Positiv
e(F.solani)
Blood
cultu
repo
sitiv
efor
F.solani
Pateletal32
1Patient
died
VALL
Amph
otericin
B,
5-fluorocytosine
VIntravitreal
amph
otericin
BFusarium
V
Gabrieleand
Hutchins3
31
Fullrecovery
ofvision
VIntravenou
sdrug
use
Amph
otericin
BV
Intravitreal
amph
otericin
BFusarium
dimerium
V
Tiribellietal34
1No
VAML
liposom
alAmph
otericin
BV
VF.solani
V
Glasgow
etal35
1Patient
died
in2wk
2wk
AID
S/
cytomegalovirus
retin
itis
Amph
otericin
BIntravitreal
amph
otericin
BV
V
Rezaiet
al36
1Patient
died
4d
Myelody
splastic
synd
rome
converted
toAML
Amph
otericin
BIntravitreal
amph
otericin
BF.solani
V
Malavade et al Infectious Diseases in Clinical Practice & Volume 21, Number 1, January 2013
8 www.infectdis.com * 2013 Lippincott Williams & Wilkins
Copyright © 2013 Lippincott Williams & Wilkins. Unauthorized reproduction of this article is prohibited.
TABLE
2.Re
view
ofLiterature
forEn
doge
nous
Fusariu
mEn
doph
thalmitis
Sr.
no
Author
Journal
Year
No.
Cases
Visual
Outcom
eSurvival
Postdiagn
osis
Underlying
Con
dition
Systemic
Antifungals
Primary
Site
Vitrectom
yWith
Intravitreal
Antibiotics
Culture
Positivefor
Vitrectom
y
Culture
Positive
forPrimary
Site
1Cho
etal
JPediatr
1973
1V
VALL
VSkin
Vitrectomy
F.solani
Yes,skin
andeye
2Lieberm
anetal26
AmJ
Ophthalmol
1979
1Enu
cleatio
nV
Steroids
No an
tifun
gal
agents
VVitrectomy
F.solani
V
3Anaissieetal27
Can
cer
1986
1Patient
died
2wk
Chron
icmyelogeno
usleuk
emia
Amph
otericin
BHardpalate
and
maxillary
sinu
s
VV
Yes,F.
oxyspo
rum
4Anaissieetal27
Can
cer
1986
1Patient
died
7d
Multip
lemyeloma
Amph
otericin
Bandrifampin
Fourth
left
fing
erV
VYes,F.
oxyspo
rum
5Vendittietal28
Rev
Infect
Dis
1988
1Lossof
vision
VAML
Intravenou
sam
photericin
B,
5-fluorocytosine
Skin
VV
Blood
culture
positivefor
F.solani
6Com
haire-
Poutchinian
etal29
BullSo
cBelge
Oph
thalmol
1990
1Partial
visual
recovery
(4/100
),developm
ent
ofcataract
VSteroids,
kidn
eyinfection
Treatment:
amph
otericin,
5fluo
rocytosine;
prop
hylaxis:
itracon
azole
Kidney/
skin/urinary
tract
VFusarium
V
7Rob
ertson
etal30
Bon
eMarrow
Tran
splant
1991
1Enu
cleatio
nV
AML
Amph
otericin
BV
VFusarium
V
8Lou
ieetal31
ClinInfectDis
1994
14/20
036
dAtypical
refractory
AML
Amph
otericin,
flucon
azole
Unk
nown
Vitrectomy
with
intravitreal
amph
otericin
B
Positiv
e(F.solani)
Blood
culture
positivefor
F.solani
9Pateletal32
Am
JOph
thalmol
1994
1Patient
died
VALL
Amph
otericin
B,
5-fluo
rocytosine
VIntravitreal
amph
otericin
BFusarium
Eye
10Gabriele
andHutchins3
3Am
JOph
thalmol
1996
1Full recovery
ofvision
VIntravenou
sdrug
use
Amph
otericin
BV
Intravitreal
amph
otericin
BF.dimerium
Eye
11Tiribellietal34
Eur
JHaematol
2002
1No
VAML
Liposom
alam
photericin
BV
VF.solani
Skinand
lung
s12
Glasgow
etal35
Arch Oph
thalmol
1996
1Patient
died
in2wk
2wk
AID
S/
cytomegalovirus
retin
itis
Amph
otericin
BIntravitreal
amph
otericin
BV
Eye
13Rezai
etal36
Arch Oph
thalmol
2005
1Patient
died
4d
Myelody
splastic
synd
rome
converted
toAML
Amph
otericin
BIntravitreal
amph
otericin
BF.solani
Eye
Infectious Diseases in Clinical Practice & Volume 21, Number 1, January 2013 Endogenous Fusarium Endophthalmitis
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The optimal treatment of invasive fusarial infections hasyet to be determined.16 Amphotericin B in its lipid formulationis commonly combined with an azole agent for the treatment ofinvasive fusariosis.17,18 Voriconazole has been approved fortreatment of Fusarium infections since 2002. Stanzani et al,19
in their review of literature, reported 69% of invasive fusariosisto have been successfully treated with voriconazole. Lortholaryet al16 did not find any statistically significant difference be-tween combination therapy and therapy with voriconazole alonein their international retrospective analysis of 73 cases of invasivefusariosis treated with voriconazole. Posaconazole is another an-tifungal agent with a wide spectrum for difficult-to-treat infec-tions that include zygomycosis, Scedosporium species, andFusarium species and is available as an oral suspension. Howev-er, posaconazole can have variable absorption after oral admin-istration.20 It has been reported that posaconazole and theechinocandins do not achieve adequate therapeutic levels inthe vitreous.21 There are reports of posaconazole being usedto successfully treat ocular fusariosis. In one, the patient wasimmunocompetent with Fusarium keratitis and secondary en-dophthalmitis that was treated with oral and topical posacona-zole. That patient had a descemetocele that decompressed andcould have been responsible for the high intraocular concentra-tions of posaconazole noted.22 In the other study, posaconazolewas used as a salvage medication to treat patients unable to tol-erate voriconazole or whose ocular fusariosis was resistant tovoriconazole.23 Posaconazole can be considered in patients in-tolerant to amphotericin B or voriconazole for the treatment ofocular fusariosis. Identification of the species of Fusarium caus-ing the infection has been recommended because of their vari-able susceptibilities to antifungal agents.24 All of our patientsreceived systemic antifungal therapyVamphotericin B and itra-conazole (case 1) and liposomal amphotericin B and vorico-nazole (cases 2 and 3). Local therapy included intravitrealinjection of amphotericin B (case 1) and voriconazole (case 2).Complications of treatment included renal insufficiency with li-posomal amphotericin B (case 2) necessitating change of thera-py to voriconazole. The ophthalmic outcome was enucleationfollowing multiple injections and surgeries and unsuccessful at-tempt at retinal detachment repair (case 2). One patient diedwhile on treatment (case 1), and the other was lost to follow-up(case 3). Thevisual outcome of endogenousFusarium endophthal-mitis is uniformly poor in patients with hematologic malignan-cies, as is evident from previously reported cases (Table 1).Survival outcomes in patients with disseminated Fusarium arepoor, with 100% mortality in neutropenic patients in a retro-spective study by Nucci and Annaissie.24 A detailed metastaticevaluation for fungal infection should be done in these patientsincluding ocular posterior segment examination to detect en-dogenous endophthalmitis before symptom onset and signifi-cant progression.
Table 2 summarizes the reported cases of endogenousFusarium endophthalmitis in literature before this report.
SUMMARYThis report presents 3 cases of endogenous Fusarium en-
dophthalmitis in patients with hematologic malignancies andreviews the literature of this rare condition. It summarizes an in-creasingly frequent fungal infection with ocular involvement inimmunocompromised patients with malignancies of the hemato-poietic system and stresses the importance of detailed metastaticfungal evaluation including ocular posterior segment examinationalong with laboratory confirmation for early diagnosis and man-agement of this condition.
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