Ординатура / Офтальмология / Английские материалы / Primary Intraocular Lymphoma_Chan, Gonzales_2007
.pdf
34 Primary Intraocular Lymphoma
increasing since the report by Eby et al. in 1988. For the group with inclusion of never-married males, the incidence rate in patients below 60 years of age was 1.7 per 10 million population, and in those over 60 years of age it was 7.3 per 10 million in population for the period 1973–1975. The period 1991–1993 saw the incidence rate increased to 16.9 in 10 million and 100.9 in 10 million for those under 60 years and those over 60 years, respectively. With the inclusion of never-married men, the incidence rates started at 1.9 and 8.5 in 10 million for those less than 60 years and those greater than 60 years, respectively. By 1993, the incidence rates had increased to 59.6 (for patients less than 60 years of age) and 103.6 (for those over the age of 60 years) in 10 million population. Corn and colleagues showed their findings graphically for PCNSL with non-PCNSL NHLs, gliomas, and glioblastoma. PCNSL certainly showed a lesser incidence rate for all periods of time than the other three tumors analyzed, but the rate of increase in incidence was greater than that for nonPCNSL NHLs. While Fine and Mayer and Eby et al. recognized that advancements in imaging of intracranial lesions and screening had been made that might explain in part the rise in incidence, Corn and colleagues also mentioned that perhaps the incidence of the disease would have been underestimated, at least in AIDS patients. The reason for this is due to a disinclination of surgeons to biopsy AIDS patients with brain masses.92 Since the diagnosis of PCNSL is based on histopathology (i.e. tissue must show evidence of a lymphomatous process), the lack of biopsies in AIDS patients could certainly leave many cases of PCNSL in this population underdiagnosed. In addition, after extrapolation to the year 2000, PCNSL showed no decline or leveling off. The trends for other tumors, including non-PCNSL NHLs, gliomas, and glioblastomas showed a modest increase in incidence. The rate of diagnosis for PCNSL had also increased over the interval of time analyzed.
The Role of Infectious Agents in PCNSL and PIOL. Investigators have suggested a role involving oncogenic viral infections. Though infectious agents could potentially play a role in causing PCNSL in immunocompetent patients, no definitive association has been made. EBV has been associated with Burkitt’s lymphoma and PCNSL.22,93,94 Intriguingly, Corboy et al. found that DNA of the human herpes virus 8 (HHV-8), an infectious agent associated with Kaposi’s sarcoma, primary effusion lymphomas, Castleman’s disease, and multiple myeloma, was detected in the 56% of PCNSLs from 36 patients with and without AIDS.95 Unlike the lymphomatous cells, the surrounding
Epidemiology of Primary Intraocular Lymphoma 35
normal brain tissue was negative for the viral DNA. Others have described findings of infectious agents in PCNSLs, including PIOLs, occurring in nonAIDS patients. Chan and colleagues from the National Eye Institute (NEI) discovered that in four ocular samples of PIOL cells of 13 examined, there was DNA from HHV-8; among these specimens only one from a patient with AIDS contained EBV DNA.96 Later, Shen and colleagues reported that two ocular specimens of 10 PIOL immunocompetent patients contained Toxoplasma gondii DNA.97 Though these findings in immunocompetent patients are captivating, there has been no definitive link of infectious agents causing PCNSLs or PIOLs in this population.
Other infectious agents may be associated with other ocular lymphomatous processes. For example, some extranodal marginal zone lymphomas of mucosa-associated lymphoid tissue (MALT), specifically gastric MALTs (arising from the major causative agent in gastric ulcers) have been found to arise due to infection by the bacterium Helicobacter pylori.98,99 Indeed, Helicobacter pylori DNA is found in conjuncitval MALT lymphoma.100 Currently, 15% of NHLs in patients infected with HIV are PCNSLs, while this malignancy makes up 1% of NHLs in immunocompetent patients. Certainly in AIDS patients, latent EBV infection is associated with the development of PCNSL and PIOL.26 However, as noted previously, the use of HAART may have the potential to affect what genotypic subtype of PCNSL and PIOL develops within the AIDS patients. As HAART decreases the ability of opportunistic infections to cause disease in AIDS patients and as this important therapy is able to maintain a B and T cell milieu that is more similar to an immunocompetent patient, we may find that a shift from ABC DLBCL toward GCB DLBCL type PCNSLs occurs. This is important because as we direct therapy towards PCNSLs and PIOLs, targeting the genes or gene products that are expressed in genotypic subtypes of CNS lymphomas will more specifically eradicate the disease.
References
1.Shah GD, DeAngelis LM. (2005) Treatment of primary central nervous system lymphoma. Hematol Oncol Clin North Am 19(4): 611–627.
2.Cote TR, Biggar RJ, Rosenberg PS, et al. (1997) Non-Hodgkin’s lymphoma among people with AIDS: incidence, presentation and public health burden. AIDS/Cancer Study Group. Int J Cancer 73(5): 645–650.
36Primary Intraocular Lymphoma
3.Cote TR, Manns A, Hardy CR, et al. (1996) Epidemiology of brain lymphoma among people with or without acquired immunodeficiency syndrome. AIDS/Cancer Study Group. J Natl Cancer Inst 88(10): 675–679.
4.Miller DC, Hochberg FH, Harris NL, et al. (1994) Pathology with clinical correlations of primary central nervous system non-Hodgkin’s lymphoma. The Massachusetts General Hospital experience 1958–1989. Cancer 74(4): 1383–1397.
5.DeAngelis LM. (1991) Primary central nervous system lymphoma: a new clinical challenge. Neurology 41(5): 619–621.
6.Davis FG, Kupelian V, Freels S, et al. (2001) Prevalence estimates for primary brain tumors in the United States by behavior and major histology groups. Neuro-oncol 3(3): 152–158.
7.Surawicz TS, McCarthy BJ, Kupelian V, et al. (1999) Descriptive epidemiology of primary brain and CNS tumors: results from the Central Brain Tumor Registry of the United States, 1990–1994. Neuro-oncol 1(1): 14–25.
8.Behin A, Hoang-Xuan K, Carpentier AF, Delattre JY. (2003) Primary brain tumours in adults. Lancet 361(9354): 323–331.
9.Freeman C, Berg JW, Cutler SJ. (1972) Occurrence and prognosis of extranodal lymphomas. Cancer 29(1): 252–260.
10.Jellinger K, Radaskiewicz TH, Slowik F. (1975) Primary malignant lymphomas of the central nervous system in man. Acta Neuropathol Suppl (Berl) Suppl 6: 95–102.
11.Zimmerman HM. (1975) Malignant lymphomas of the nervous system. Acta Neuropathol Suppl (Berl) Suppl 6: 69–74.
12.Eby NL, Grufferman S, Flannelly CM, et al. (1988) Increasing incidence of primary brain lymphoma in the US. Cancer 62(11): 2461–2465.
13.Corn BW, Marcus SM, Topham A, et al. (1997) Will primary central nervous system lymphoma be the most frequent brain tumor diagnosed in the year 2000? Cancer 79(12): 2409–2413.
14.Oleson JE, Janney CA, Rao RD, et al. (2002) The continuing increase in the incidence of primary central nervous system non-Hodgkin lymphoma: a surveillance, epidemiology, and end results analysis. Cancer 95(7): 1504–1510.
15.Schabet M. (1999) Epidemiology of primary CNS lymphoma. J Neurooncol 43(3): 199–201.
16.Baehring JM, Androudi S, Longtine JJ, et al. (2005) Analysis of clonal immunoglobulin heavy chain rearrangements in ocular lymphoma. Cancer 104(3): 591–597.
17.Chan CC. (2003) Molecular pathology of primary intraocular lymphoma.
Trans Am Ophthalmol Soc 101: 275–292.
Epidemiology of Primary Intraocular Lymphoma 37
18.Char DH, Ljung BM, Miller T, Phillips T. (1988) Primary intraocular lymphoma (ocular reticulum cell sarcoma) diagnosis and management.
Ophthalmology 95: 625–630.
19.Char DH, Margolis L, Newman AB. (1981) Ocular reticulum cell sarcoma.
Am J Ophthalmol 91(4): 480–483.
20.Rockwood EJ, Zakov ZN, Bay JW. (1984) Combined malignant lymphoma of the eye and CNS (reticulum-cell sarcoma). J Neurosurg 61: 369–374.
21.Chan CC, Buggage RR, Nussenblatt RB. (2002) Intraocular lymphoma. Curr Opin Ophthalmol 13(6): 411–418.
22.Hochberg FH, Miller DC. (1988) Primary central nervous system lymphoma. J Neurosurg 68(6): 835–853.
23.Buggage RR, Chan CC, Nussenblatt RB. (2001) Ocular manifestations of central nervous system lymphoma. Curr Opin Oncol 13(3): 137–142.
24.Bataille B, Delwail V, Menet E, et al. (2000) Primary intracerebral malignant lymphoma: report of 248 cases. J Neurosurg 92(2): 261–266.
25.Abrey LE, DeAngelis LM, Yahalom J. (1998) Long-term survival in primary CNS lymphoma. J Clin Oncol 16(3): 859–863.
26.Fine HA, Mayer RJ. (1993) Primary central nervous system lymphoma. Ann Intern Med 119(11): 1093–1104.
27.Sarkar C, Sharma MC, Deb P, et al. (2005) Primary central nervous system lymphoma — a hospital based study of incidence and clinicopathological features from India (1980–2003). J Neurooncol 71(2): 199–204.
28.Yamanaka R, Morii K, Shinbo Y, et al. (2005) Modified ProMACE-MOPP hybrid regimen with moderate-dose methotrexate for patients with primary CNS lymphoma. Ann Hematol 84(7): 447–455.
29.Hayakawa T, Takakura K, Abe H, et al. (1994) Primary central nervous system lymphoma in Japan — a retrospective, co-operative study by CNSLymphoma Study Group in Japan. J Neurooncol 19(3): 197–215.
30.Cassoux N, Merle-Beral H, Leblond V, et al. (2000) Ocular and central nervous system lymphoma: clinical features and diagnosis. Ocul Immunol Inflamm 8(4): 243–250.
31.Mikata A. (1981) A new histological classification of malignant lymphomas (LSG classification) and its significance. Nippon Ketsueki Gakkai Zasshi 44(7): 1401–1410.
32.Shibamoto Y, Tsuchida E, Seki K, et al. (2004) Primary central nervous system lymphoma in Japan 1995–1999: changes from the preceding 10 years.
J Cancer Res Clin Oncol 130(6): 351–356.
33.Kuratsu J, Takeshima H, Ushio Y. (2001) Trends in the incidence of primary intracranial tumors in Kumamoto, Japan. Int J Clin Oncol 6(4): 183–191.
38Primary Intraocular Lymphoma
34.Hayabuchi N, Shibamoto Y, Onizuka Y. (1999) Primary central nervous system lymphoma in Japan: a nationwide survey. Int J Radiat Oncol Biol Phys 44(2): 265–272.
35.Ferreri AJ, Reni M, Villa E. (1995) Primary central nervous system lymphoma in immunocompetent patients. Cancer Treat Rev 21(5): 415–446.
36.Suh YL, Koo H, Kim TS, et al. (2002) Tumors of the central nervous system in Korea: a multicenter study of 3221 cases. J Neurooncol 56(3): 251–259.
37.Hao D, DiFrancesco LM, Brasher PM, et al. (1999) Is primary CNS lymphoma really becoming more common? A population-based study of incidence, clinicopathological features and outcomes in Alberta from 1975 to 1996. Ann Oncol 10(1): 65–70.
38.Yau YH, O’Sullivan MG, Signorini D, et al. (1996) Primary lymphoma of central nervous system in immunocompetent patients in south-east Scotland. Lancet 348(9031): 890.
39.Freeman LN, Schachat AP, Knox DL, et al. (1987) Clinical features, laboratory investigations, and survival in ocular reticulum cell sarcoma. Ophthalmology 94: 1631–1639.
40.Whitcup SM, de Smet MD, Rubin BI, et al. (1993) Intraocular lymphoma. Clinical and histopathologic diagnosis. Ophthalmology 100: 1399–1406.
41.Peterson K, Gordon KB, Heinemann MH, DeAngelis LM. (1993) The clinical spectrum of ocular lymphoma. Cancer 72(3): 843–849.
42.Akpek EK, Ahmed I, Hochberg FH, et al. (1999) Intraocular-central nervous system lymphoma: clinical features, diagnosis, and outcomes. Ophthalmology 106(9): 1805–1810.
43.Zaldivar RA, Martin DF, Holden JT, Grossniklaus HE. (2004) Primary intraocular lymphoma: clinical, cytologic, and flow cytometric analysis. Ophthalmology 111(9): 1762–1767.
44.Hormigo A, Abrey L, Heinemann MH, DeAngelis LM. (2004) Ocular presentation of primary central nervous system lymphoma: diagnosis and treatment. Br J Haematol 126(2): 202–208.
45.Forsyth PA, DeAngelis LM. (1996) Biology and management of AIDSassociated primary CNS lymphomas. Hematol Oncol Clin North Am 10(5): 1125–1134.
46.Otieno MW, Banura C, Katongole-Mbidde E, et al. (2002) Therapeutic challenges of AIDS-related non-Hodgkin’s lymphoma in the United States and East Africa. J Natl Cancer Inst 94(10): 718–732.
47.Basso U, Brandes AA. (2002) Diagnostic advances and new trends for the treatment of primary central nervous system lymphoma. Eur J Cancer 38(10): 1298–1312.
Epidemiology of Primary Intraocular Lymphoma 39
48.Herrlinger U. (1999) Primary CNS lymphoma: findings outside the brain. J Neurooncol 43(3): 227–230.
49.(1986) Classification system for human T-lymphotropic virus type III/lym- phadenopathy-associated virus infections. MMWR Morb Mortal Wkly Rep 35(20): 334–339.
50.Biggar RJ, Rabkin CS. (1992) The epidemiology of acquired immunodeficiency syndrome-related lymphomas. Curr Opin Oncol 4(5): 883–893.
51.Serraino D, Franceschi S, Tirelli U, Monfardini S. (1992) The epidemiology of acquired immunodeficiency syndrome and associated tumours in Europe. Ann Oncol 3(8): 595–603.
52.Anders KH, Guerra WF, Tomiyasu U, et al. (1986) The neuropathology of AIDS. UCLA experience and review. Am J Pathol 124(3): 537–558.
53.Levy RM, Bredesen DE, Rosenblum ML. (1985) Neurological manifestations of the acquired immunodeficiency syndrome (AIDS): experience at UCSF and review of the literature. J Neurosurg 62(4): 475–495.
54.Morgello S, Petito CK, Mouradian JA. (1990) Central nervous system lymphoma in the acquired immunodeficiency syndrome. Clin Neuropathol 9(4): 205–215.
55.Welch K, Finkbeiner W, Alpers CE, et al. (1984) Autopsy findings in the acquired immune deficiency syndrome. Jama 252(9): 1152–1159.
56.Wolf T, Brodt HR, Fichtlscherer S, et al. (2005) Changing incidence and prognostic factors of survival in AIDS-related non-Hodgkin’s lymphoma in the era of highly active antiretroviral therapy (HAART). Leuk Lymphoma 46(2): 207–215.
57.Formenti SC, Gill PS, Lean E, et al. (1989) Primary central nervous system lymphoma in AIDS. Results of radiation therapy. Cancer 63(6): 1101–1107.
58.Levy RM, Janssen RS, Bush TJ, Rosenblum ML. (1988) Neuroepidemiology of acquired immunodeficiency syndrome. J Acquir Immune Defic Syndr 1(1): 31–40.
59.Ling SM, Roach M, 3rd, Larson DA, Wara WM. (1994) Radiotherapy of primary central nervous system lymphoma in patients with and without human immunodeficiency virus. Ten years of treatment experience at the University of California San Francisco. Cancer 73(10): 2570–2582.
60.MacMahon EM, Glass JD, Hayward SD, et al. (1991) Epstein-Barr virus in AIDS-related primary central nervous system lymphoma. Lancet 338(8773): 969–973.
61.Rosenblum ML, Levy RM, Bredesen DE, et al. (1988) Primary central nervous system lymphomas in patients with AIDS. Ann Neurol 23 Suppl: S13–16.
40Primary Intraocular Lymphoma
62.Baumgartner JE, Rachlin JR, Beckstead JH, et al. (1990) Primary central nervous system lymphomas: natural history and response to radiation therapy in 55 patients with acquired immunodeficiency syndrome. J Neurosurg 73(2): 206–211.
63.Goplen AK, Dunlop O, Liestol K, et al. (1997) The impact of primary central nervous system lymphoma in AIDS patients: a population-based autopsy study from Oslo. J Acquir Immune Defic Syndr Hum Retrovirol 14(4): 351–354.
64.Goedert JJ. (2000) The epidemiology of acquired immunodeficiency syndrome malignancies. Semin Oncol 27(4): 390–401.
65.(2000) Highly active antiretroviral therapy and incidence of cancer in human immunodeficiency virus-infected adults. J Natl Cancer Inst 92(22): 1823–1830.
66.Sacktor N. (2002) The epidemiology of human immunodeficiency virusassociated neurological disease in the era of highly active antiretroviral therapy. J Neurovirol 8 Suppl 2: 115–121.
67.Gebo KA, Fleishman JA, Moore RD. (2005) Hospitalizations for metabolic conditions, opportunistic infections, and injection drug use among HIV patients: trends between 1996 and 2000 in 12 states. J Acquir Immune Defic Syndr 40(5): 609–616.
68.Autran B. (1999) Effects of antiretroviral therapy on immune reconstitution. Antivir Ther 4 Suppl 3: 3–6.
69.(2004) Introduction of routine HIV testing in prenatal care — Botswana, 2004. MMWR Morb Mortal Wkly Rep 53(46): 1083–1086.
70.Levine AM. (1994) Lymphoma complicating immunodeficiency disorders.
Ann Oncol 5 Suppl 2: 29–35.
71.Paulus W, Jellinger K, Hallas C, et al. (1993) Human herpesvirus-6 and Epstein-Barr virus genome in primary cerebral lymphomas. Neurology 43(8): 1591–1593.
72.Schiff D, Suman VJ, Yang P, et al. (1998) Risk factors for primary central nervous system lymphoma: a case-control study. Cancer 82(5): 975–982.
73.Penn I. (1983) Lymphomas complicating organ transplantation. Transplant Proc 15(4, Suppl. 1): 2790–2797.
74.Boubenider S, Hiesse C, Goupy C, et al. (1997) Incidence and consequences of post-transplantation lymphoproliferative disorders. J Nephrol 10(3): 136–145.
75.Gentil MA, Gonzalez-Roncero F, Cantarell C, et al. (2005) Effect of new immunosuppressive regimens on cost of renal transplant maintenance immunosuppression. Transplant Proc 37(3): 1441–1442.
76.Penn I. (1993) Incidence and treatment of neoplasia after transplantation.
J Heart Lung Transplant 12(6 Pt 2): S328–336.
Epidemiology of Primary Intraocular Lymphoma 41
77.Penn I. (1996) Posttransplantation de novo tumors in liver allograft recipients. Liver Transpl Surg 2(1): 52–59.
78.Johnson BL. (1992) Intraocular and central nervous system lymphoma in a cardiac transplant recipient. Ophthalmology 99(6): 987–992.
79.Hacker SM, Knight BP, Lunde NM, et al. (1992) A primary central nervous system T cell lymphoma in a renal transplant patient. Transplantation 53(3): 691–692.
80.Filipovich AH, Heinitz KJ, Robison LL, Frizzera G. (1987) The Immunodeficiency Cancer Registry. A research resource. Am J Pediatr Hematol Oncol 9(2): 183–184.
81.Perry GS, 3rd, Spector BD, Schuman LM, et al. (1980) The Wiskott-Aldrich syndrome in the United States and Canada (1892–1979). J Pediatr 97(1): 72–78.
82.Kaufman DA, Hershfield MS, Bocchini JA, et al. (2005) Cerebral lymphoma in an adenosine deaminase-deficient patient with severe combined immunodeficiency receiving polyethylene glycol-conjugated adenosine deaminase.
Pediatrics.
83.Heidelberger KP, LeGolvan DP. (1974) Wiskott-Aldrich syndrome and cerebral neoplasia: report of a case with localized reticulum cell sarcoma. Cancer 33(1): 280–284.
84.Vernino S, Salomao DR, Habermann TM, O’Neill BP. (2005) Primary CNS lymphoma complicating treatment of myasthenia gravis with mycophenolate mofetil. Neurology 65(4): 639–641.
85.Bailey P. (1929) Intracranial sarcomatous tumors of leptomeningeal origin. Arch Surg 18: 1359–1402.
86.Cooper EL, Ricker JL. (1951) Malignant lymphoma of the uveal tract. Am J Ophthalmol 34: 1153–1158.
87.Vogel MH, Font RL, Zimmerman LE, Levine RA. (1968) Reticulum cell sarcoma of the retina and uvea. Report of six cases and review of the literature.
Am J Ophthalmol 66(2): 205–215.
88.(1981) Surveillance, epidemiology, and end results: incidence and mortality data, 1973–77. Natl Cancer Inst Monogr (57): 1–1082.
89.(1975) Third national cancer survey: incidence data. Natl Cancer Inst Monogr (41): I–x, 1–454.
90.Daling JR, Weiss NS, Klopfenstein LL, et al. (1982) Correlates of homosexual behavior and the incidence of anal cancer. Jama 247(14): 1988–1990.
91.Russell DS, Marshall AHE, Smith FB. (1948) Microgliomatosis. Brain 71: 1–15.
92.Corn BW, Trock BJ, Curran WJ, Jr. (1995) Management of primary central nervous system lymphoma for the patient with acquired immunodeficiency syndrome. Confronting a clinical catch-22. Cancer 76(2): 163–166.
42Primary Intraocular Lymphoma
93.Burkitt DP. (1983) The discovery of Burkitt’s lymphoma. Cancer 51(10): 1777–1786.
94.Tao Q, Robertson KD, Manns A, et al. (1998) Epstein-Barr virus (EBV) in endemic Burkitt’s lymphoma: molecular analysis of primary tumor tissue (published erratum appears in Blood 1998 Apr 15; 91(8):3091). Blood 91(4): 1373–1381.
95.Corboy JR, Garl PJ, Kleinschmidt-DeMasters BK. (1998) Human herpesvirus 8 DNA in CNS lymphomas from patients with and without AIDS (see comments). Neurology 50(2): 335–340.
96.Chan CC, Shen DF, Whitcup SM, Nussenblatt RB, et al. (1999) Detection of human herpesvirus-8 and Epstein-Barr virus DNA in primary intraocular lymphoma. Blood 93(8): 2749–2751.
97.Shen DF, Herbort CP, Tuaillon N, et al. (2001) Detection of toxoplasma gondii DNA in primary intraocular b-cell lymphoma. Mod Pathol 14(10): 995–999.
98.Sung JJ, Chung SC, Ling TK, et al. (1995) Antibacterial treatment of gastric ulcers associated with Helicobacter pylori. N Engl J Med 332(3): 139–142.
99.Veldhuyzen van Zanten SJ, Sherman PM. (1994) Helicobacter pylori infection as a cause of gastritis, duodenal ulcer, gastric cancer and nonulcer dyspepsia: a systematic overview. Can Med Assoc J 150(2): 177–185.
100.Chan CC, Smith JA, Shen DF, et al. (2004) Helicobacter pylori (H. pylori) molecular signature in conjunctival mucosa-associated lymphoid tissue (MALT) lymphoma. Histol Histopathol 19(4): 1219–1226.
Chapter 5
Clinical Manifestations of PIOL
Historical Account
The clinical manifestations of reticulum cell sarcoma (now known as PIOL) often resemble that of uveitis and, occasionally, infectious ocular diseases. Thus, PIOL is a masquerade syndrome.
By 1988 nearly 100 cases of intraocular reticulum cell sarcoma (PIOL) had been reported in the literature. It was in the late 1980s that most of the literature recognized the lymphomatous origin of this ocular malignancy.
First Cases of Lymphoma in the Eye. The first patient with intraocular lymphoma (though most likely to be a systemic metastasis to the eye) to be reported in the literature1 showed ocular symptoms before the systemic disease was discovered. What brought this rather young (27 years of age) gentleman to his ophthalmologist (prior to being referred to Cooper and Ricker) were complaints of ocular pain and blurred vision in the right eye (Table 5.1). Not unusual even today, the patient was diagnosed initially with iritis and was prescribed corticosteroid treatment. When he was referred to Cooper and Ricker, visual acuity in the right eye was good, being 20/25. A mild ciliary flush was noted, and slit lamp biomicroscopy revealed mutton fat keratic precipitates. In addition, the iris stroma was thickened with engorged vessels. Fundus examination revealed an edematous optic nerve head and surrounding retina. Periphlebitis and engorged retinal veins also characterized the fundus examination. The retina exhibited retinal hemorrhages. Topical and systemic corticosteroid therapy for presumed uveitis was instituted, and, as is all too commonly the case with even modern descriptions of PIOL, the inflammation exhibited by the patient’s right eye was refractory to treatment.
43
