CC BY 4.0 · Avicenna J Med 2023; 13(01): 023-034
DOI: 10.1055/s-0043-1764375
Review Article

Pneumocystis jiroveci Pneumonia: A Review of Management in Human Immunodeficiency Virus (HIV) and Non-HIV Immunocompromised Patients

Atif Ibrahim
1   North Mississippi Medical Center, Tupelo, Mississippi, United States
,
Asmi Chattaraj
2   University of Pittsburgh Medical Center, McKeesport, Pennsylvania, United States
,
Qamar Iqbal
3   TidalHealth, Salisbury, Maryland, United States
,
Ali Anjum
4   King Edward Medical University, Lahore, Pakistan
,
Mohammad Ebad Ur Rehman
5   Rawalpindi Medical University, Rawalpindi, Pakistan
,
Zobia Aijaz
6   Dow Medical College, Karachi, Pakistan
,
Fazila Nasir
7   Allama Iqbal Medical College, Lahore, Pakistan
,
Sadia Ansar
8   Rawal Institute of Health Sciences, Islamabad, Pakistan
,
Tirdad T. Zangeneh
9   Division of Infectious Diseases, Department of Medicine, University of Arizona, Tucson, Arizona, United States
,
Ahmad Iftikhar
10   Department of Internal Medicine, University of Arizona, Tucson, Arizona, United States
› Author Affiliations
Funding None.

Abstract

Pneumocystis jirovecii pneumonia is an opportunistic fungal infection that was mainly associated with pneumonia in patients with advanced human immunodeficiency virus (HIV) disease. There has been a decline in Pneumocystis jirovecii pneumonia incidence in HIV since the introduction of antiretroviral medications. However, its incidence is increasing in non-HIV immunocompromised patients including those with solid organ transplantation, hematopoietic stem cell transplantation, solid organ tumors, autoimmune deficiencies, and primary immunodeficiency disorders. We aim to review and summarize the etiology, epidemiology, clinical presentation, diagnosis, and management of Pneumocystis jirovecii pneumonia in HIV, and non-HIV patients. HIV patients usually have mild-to-severe symptoms, while non-HIV patients present with a rapidly progressing disease. Induced sputum or bronchoalveolar lavage fluid can be used to make a definitive diagnosis of Pneumocystis jirovecii pneumonia. Trimethoprim-sulfamethoxazole is considered to be the first-line drug for treatment and has proven to be highly effective for Pneumocystis jirovecii pneumonia prophylaxis in both HIV and non-HIV patients. Pentamidine, atovaquone, clindamycin, and primaquine are used as second-line agents. While several diagnostic tests, treatments, and prophylactic regimes are available at our disposal, there is need for more research to prevent and manage this disease more effectively.

Availability of Data and Materials

All data generated or analyzed during this study are included in this published article in the reference section.




Publication History

Article published online:
24 March 2023

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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  • References

  • 1 Edman JC, Kovacs JA, Masur H, Santi DV, Elwood HJ, Sogin ML. Ribosomal RNA sequence shows Pneumocystis carinii to be a member of the fungi. Nature 1988; 334 (6182): 519-522
  • 2 Bartlett MS, Queener SF, Shaw MM, Richardson JD, Smith JW. Pneumocystis carinii is resistant to imidazole antifungal agents. Antimicrob Agents Chemother 1994; 38 (08) 1859-1861
  • 3 Meenakshi K, Gowtham RAR, Usha K. Pneumocystis jirovecii pneumonia: a revisit to the old Malady. J Clin Diagn Res 2019; 13 DOI: 10.7860/JCDR/2019/42636.13318. : DE01-DE08
  • 4 Morris A, Wei K, Afshar K, Huang L. Epidemiology and clinical significance of pneumocystis colonization. J Infect Dis 2008; 197 (01) 10-17
  • 5 Gigliotti F, Wright TW. Pneumocystis: where does it live?. PLoS Pathog 2012; 8 (11) e1003025
  • 6 Walzer PD. Pneumocystis carinii: recent advances in basic biology and their clinical application. AIDS 1993; 7 (10) 1293-1305
  • 7 Castro JG, Morrison-Bryant M. Management of Pneumocystis jirovecii pneumonia in HIV infected patients: current options, challenges and future directions. HIV AIDS (Auckl) 2010; 2: 123-134
  • 8 Walzer PD. Immunological features of Pneumocystis carinii infection in humans. Clin Diagn Lab Immunol 1999; 6 (02) 149-155
  • 9 Li M-C, Lee N-Y, Lee C-C, Lee H-C, Chang C-M, Ko W-C. Pneumocystis jiroveci pneumonia in immunocompromised patients: delayed diagnosis and poor outcomes in non-HIV-infected individuals. J Microbiol Immunol Infect 2014; 47 (01) 42-47
  • 10 Fujii T, Nakamura T, Iwamoto A. Pneumocystis pneumonia in patients with HIV infection: clinical manifestations, laboratory findings, and radiological features. J Infect Chemother 2007; 13 (01) 1-7
  • 11 Russian DA, Levine SJ. Pneumocystis carinii pneumonia in patients without HIV infection. Am J Med Sci 2001; 321 (01) 56-65
  • 12 Sepkowitz KA, Telzak EE, Gold JW. et al. Pneumothorax in AIDS. Ann Intern Med 1991; 114 (06) 455-459
  • 13 Kovacs JA, Hiemenz JW, Macher AM. et al. Pneumocystis carinii pneumonia: a comparison between patients with the acquired immunodeficiency syndrome and patients with other immunodeficiencies. Ann Intern Med 1984; 100 (05) 663-671
  • 14 Wang H-W, Lin C-C, Kuo C-F, Liu C-P, Lee C-M. Mortality predictors of Pneumocystis jirovecii pneumonia in human immunodeficiency virus-infected patients at presentation: Experience in a tertiary care hospital of northern Taiwan. J Microbiol Immunol Infect 2011; 44 (04) 274-281
  • 15 Leggiadro RJ, Winkelstein JA, Hughes WT. Prevalence of Pneumocystis carinii pneumonitis in severe combined immunodeficiency. J Pediatr 1981; 99 (01) 96-98
  • 16 Tarr PE, Sneller MC, Mechanic LJ. et al. Infections in patients with immunodeficiency with thymoma (Good syndrome). Report of 5 cases and review of the literature. Medicine (Baltimore) 2001; 80 (02) 123-133
  • 17 Winkelstein JA, Marino MC, Ochs H. et al. The X-linked hyper-IgM syndrome: clinical and immunologic features of 79 patients. Medicine (Baltimore) 2003; 82 (06) 373-384
  • 18 Bernstein CN, Kolodny M, Block E, Shanahan F. Pneumocystis carinii pneumonia in patients with ulcerative colitis treated with corticosteroids. Am J Gastroenterol 1993; 88 (04) 574-577
  • 19 Yates M, Watts RA, Bajema IM. et al. EULAR/ERA-EDTA recommendations for the management of ANCA-associated vasculitis. Ann Rheum Dis 2016; 75 (09) 1583-1594
  • 20 Mouren D, Goyard C, Catherinot E. et al. COVID-19 and Pneumocystis jirovecii pneumonia: back to the basics. Respir Med Res 2021; 79: 100814
  • 21 Block BL, Mehta T, Ortiz GM. , et al. Unusual Radiographic Presentation of Pneumocystis Pneumonia in a Patient with AIDS. Case reports in infectious diseases. 2017;2017
  • 22 Kim HS, Shin KE, Lee J-H. Single nodular opacity of granulomatous pneumocystis jirovecii pneumonia in an asymptomatic lymphoma patient. Korean J Radiol 2015; 16 (02) 440-443
  • 23 Hardak E, Brook O, Yigla M. Radiological features of Pneumocystis jirovecii Pneumonia in immunocompromised patients with and without AIDS. Lung 2010; 188 (02) 159-163
  • 24 Weig M, Klinker H, Bögner BH, Meier A, Gross U. Usefulness of PCR for diagnosis of Pneumocystis carinii pneumonia in different patient groups. J Clin Microbiol 1997; 35 (06) 1445-1449
  • 25 Azoulay É, Bergeron A, Chevret S, Bele N, Schlemmer B, Menotti J. Polymerase chain reaction for diagnosing pneumocystis pneumonia in non-HIV immunocompromised patients with pulmonary infiltrates. Chest 2009; 135 (03) 655-661
  • 26 Corsi-Vasquez G, Ostrosky-Zeichner L, Pilkington III EF, Sax PE. Point-counterpoint: should serum β-d-Glucan testing be used for the diagnosis of Pneumocystis jirovecii pneumonia?. J Clin Microbiol 2019; 58 (01) e01340-e01319
  • 27 Karageorgopoulos DE, Qu J-M, Korbila IP, Zhu Y-G, Vasileiou VA, Falagas ME. Accuracy of β-D-glucan for the diagnosis of Pneumocystis jirovecii pneumonia: a meta-analysis. Clin Microbiol Infect 2013; 19 (01) 39-49
  • 28 Xie D, Xu W, You J. et al. Clinical descriptive analysis of severe Pneumocystis jirovecii pneumonia in renal transplantation recipients. Bioengineered 2021; 12 (01) 1264-1272
  • 29 White PL, Price JS, Backx M. Therapy and management of Pneumocystis jirovecii infection. J Fungi (Basel) 2018; 4 (04) 127
  • 30 Fishman JA, Gans H. AST Infectious Diseases Community of Practice. Pneumocystis jiroveci in solid organ transplantation: guidelines from the American Society of Transplantation Infectious Diseases Community of Practice. Clin Transplant 2019; 33 (09) e13587
  • 31 Maschmeyer G, Helweg-Larsen J, Pagano L, Robin C, Cordonnier C, Schellongowski P. 6th European Conference on Infections in Leukemia (ECIL-6), a joint venture of The European Group for Blood and Marrow Transplantation (EBMT), The European Organization for Research and Treatment of Cancer (EORTC), the International Immunocompromised Host Society (ICHS) and The European LeukemiaNet (ELN). ECIL guidelines for treatment of Pneumocystis jirovecii pneumonia in non-HIV-infected haematology patients. J Antimicrob Chemother 2016; 71 (09) 2405-2413
  • 32 Wang LI, Liang H, Ye LI, Jiang J, Liang B, Huang J. Adjunctive corticosteroids for the treatment of Pneumocystis jiroveci pneumonia in patients with HIV: a meta-analysis. Exp Ther Med 2016; 11 (02) 683-687
  • 33 Benfield T, Atzori C, Miller RF, Helweg-Larsen J. Second-line salvage treatment of AIDS-associated Pneumocystis jirovecii pneumonia: a case series and systematic review. J Acquir Immune Defic Syndr 2008; 48 (01) 63-67
  • 34 Huang Y-S, Liu C-E, Lin S-P. et al; Taiwan HIV Study Group. Echinocandins as alternative treatment for HIV-infected patients with Pneumocystis pneumonia. AIDS 2019; 33 (08) 1345-1351
  • 35 Farkas JD, Clouser RD, Garrison GW. Pneumocystis pneumonia following rituximab. Chest 2014; 145 (03) 663-664
  • 36 Hosseini-Moghaddam SM, Shokoohi M, Singh G, Nagpal AD, Jevnikar AM. Six-month risk of Pneumocystis pneumonia following acute cellular rejection: a case-control study in solid organ transplant recipients. Clin Transplant 2021; 35 (07) e14322
  • 37 Zalmanovich A, Ben-Ami R, Rahav G. et al. Rituximab identified as an independent risk factor for severe PJP: a case-control study. PLoS One 2020; 15 (09) e0239042
  • 38 Urabe N, Sakamoto S, Sano G, Ito A, Sekiguchi R, Homma S. Serial change in serum biomarkers during treatment of non-HIV Pneumocystis pneumonia. J Infect Chemother 2019; 25 (12) 936-942
  • 39 Kosaka M, Ushiki A, Ikuyama Y. et al. A four-center retrospective study of the efficacy and toxicity of low-dose trimethoprim-sulfamethoxazole for the treatment of Pneumocystis pneumonia in patients without HIV infection. Antimicrob Agents Chemother 2017; 61 (12) e01173-e01117
  • 40 Kabir V, Maertens J, Kuypers D. Fungal infections in solid organ transplantation: an update on diagnosis and treatment. Transplant Rev (Orlando) 2019; 33 (02) 77-86
  • 41 Lemiale V, Debrumetz A, Delannoy A, Alberti C, Azoulay E. Adjunctive steroid in HIV-negative patients with severe Pneumocystis pneumonia. Respir Res 2013; 14 (01) 87
  • 42 Wieruszewski PM, Barreto JN, Frazee E. et al. Early corticosteroids for Pneumocystis pneumonia in adults without HIV are not associated with better outcome. Chest 2018; 154 (03) 636-644
  • 43 Miller RF, Le Noury J, Corbett EL, Felton JM, De Cock KM. Pneumocystis carinii infection: current treatment and prevention. J Antimicrob Chemother 1996; 37 (Suppl B): 33-53
  • 44 Roger PM, Vandenbos F, Pugliese P. et al. Persistence of Pneumocystis carinii after effective treatment of P. carinii pneumonia is not related to relapse or survival among patients infected with human immunodeficiency virus. Clin Infect Dis 1998; 26 (02) 509-510
  • 45 McKinnell JA, Cannella AP, Injean P, Gregson A. Adjunctive glucocorticoid therapy for non-HIV-related pneumocystis carinii pneumonia (NH-PCP). Am J Transplant 2014; 14 (04) 982-983
  • 46 Chen M, Tian X, Qin F. et al. Pneumocystis pneumonia in patients with autoimmune diseases: a retrospective study focused on clinical characteristics and prognostic factors related to death. PLoS One 2015; 10 (09) e0139144
  • 47 Komano Y, Harigai M, Koike R. et al. Pneumocystis jiroveci pneumonia in patients with rheumatoid arthritis treated with infliximab: a retrospective review and case-control study of 21 patients. Arthritis Rheum 2009; 61 (03) 305-312
  • 48 Yang C-Y, Yang A-H, Yang W-C, Lin C-C. Risk factors for Pneumocystis jiroveci pneumonia in glomerulonephritis patients receiving immunosuppressants. Intern Med 2012; 51 (20) 2869-2875
  • 49 Kermani TA, Ytterberg SR, Warrington KJ. Pneumocystis jiroveci pneumonia in giant cell arteritis: A case series. Arthritis Care Res (Hoboken) 2011; 63 (05) 761-765
  • 50 Freeman AF, Davis J, Anderson VL. et al. Pneumocystis jiroveci infection in patients with hyper-immunoglobulin E syndrome. Pediatrics 2006; 118 (04) e1271-e1275
  • 51 Claman HN. The Immunology of Human Pregnancy. Springer Science & Business Media; Humana Totowa, NJ: 2012. DOI: 10.1007/978-1-4612-0361-2
  • 52 Vargas SL, Ponce CA, Sanchez CA, Ulloa AV, Bustamante R, Juarez G. Pregnancy and asymptomatic carriage of Pneumocystis jiroveci. Emerg Infect Dis 2003; 9 (05) 605-606
  • 53 Ahmad H, Mehta NJ, Manikal VM. et al. Pneumocystis carinii pneumonia in pregnancy. Chest 2001; 120 (02) 666-671
  • 54 Lee H-Y, Lu C-Y, Lee P-I, Chen J-M, Huang L-M, Chang L-Y. Pneumocystis jiroveci pneumonia in Taiwan from 2014 to 2017: Clinical manifestations and outcomes between pediatric and adult patients. J Microbiol Immunol Infect 2019; 52 (06) 983-990
  • 55 Basiaga ML, Ross ME, Gerber JS, Ogdie A. Incidence of Pneumocystis jirovecii and adverse events associated with pneumocystis prophylaxis in children receiving glucocorticoids. J Pediatric Infect Dis Soc 2018; 7 (04) 283-289
  • 56 Katragkou A, Fisher BT, Groll AH, Roilides E, Walsh TJ. Diagnostic imaging and invasive fungal diseases in children. J Pediatric Infect Dis Soc 2017; 6 (suppl_1): S22-S31
  • 57 Mofenson LM, Brady MT, Danner SP. et al. Guidelines for the prevention and treatment of opportunistic infections among HIV-exposed and HIV-infected children: recommendations from CDC, the National Institutes of Health, the HIV Medicine Association of the Infectious Diseases Society of America, the Pediatric Infectious Diseases Society, and the American Academy of Pediatrics. MMWR Recommendations and reports: Morbidity and mortality weekly report Recommendations and reports/Centers for Disease Control; 2009;58(RR-11):1
  • 58 Beltz K, Kramm CM, Laws H-J, Schroten H, Wessalowski R, Göbel U. Combined trimethoprim and caspofungin treatment for severe Pneumocystis jiroveci pneumonia in a five year old boy with acute lymphoblastic leukemia. Klin Padiatr 2006; 218 (03) 177-179
  • 59 Fatti GL, Zar HJ, Swingler GH. Clinical indicators of Pneumocystis jiroveci pneumonia (PCP) in South African children infected with the human immunodeficiency virus. Int J Infect Dis 2006; 10 (04) 282-285
  • 60 Lee SM, Cho YK, Sung YM. et al. A case of pneumonia caused by Pneumocystis jirovecii resistant to trimethoprim-sulfamethoxazole. Korean J Parasitol 2015; 53 (03) 321-327
  • 61 Huang L, Beard CB, Creasman J. et al. Sulfa or sulfone prophylaxis and geographic region predict mutations in the Pneumocystis carinii dihydropteroate synthase gene. J Infect Dis 2000; 182 (04) 1192-1198
  • 62 Ponce CA, Chabé M, George C. et al. High prevalence of Pneumocystis jirovecii dihydropteroate synthase gene mutations in patients with a first episode of Pneumocystis pneumonia in Santiago, Chile, and clinical response to trimethoprim-sulfamethoxazole therapy. Antimicrob Agents Chemother 2017; 61 (02) e01290-e01216
  • 63 Green H, Paul M, Vidal L, Leibovici L. Prophylaxis of Pneumocystis pneumonia in immunocompromised non-HIV-infected patients: systematic review and meta-analysis of randomized controlled trials. Paper presented at: Mayo Clinic Proceedings; 2007
  • 64 Wolfe RM, Peacock Jr JE. Pneumocystis pneumonia and the rheumatologist: which patients are at risk and how can PCP be prevented?. Curr Rheumatol Rep 2017; 19 (06) 35
  • 65 Jiang X, Mei X, Feng D, Wang X. Prophylaxis and treatment of Pneumocystis jiroveci pneumonia in lymphoma patients subjected to rituximab-contained therapy: a systemic review and meta-analysis. PLoS One 2015; 10 (04) e0122171
  • 66 Lee EH, Kim EY, Lee SH. et al. Risk factors and clinical characteristics of Pneumocystis jirovecii pneumonia in lung cancer. Sci Rep 2019; 9 (01) 2094
  • 67 Stern A, Green H, Paul M, Vidal L, Leibovici L. Prophylaxis for Pneumocystis pneumonia (PCP) in non-HIV immunocompromised patients. Cochrane database of systematic reviews; 2014(10): CD005590. DOI: 10.1002/14651858
  • 68 Hughes WT, Kuhn S, Chaudhary S. et al. Successful chemoprophylaxis for Pneumocystis carinii pneumonitis. N Engl J Med 1977; 297 (26) 1419-1426
  • 69 Saillourglénisson F, Chêne G, Salmi LR, Hafner R, Salamon R. [Effect of dapsone on survival in HIV infected patients: a meta- analysis of finished trials]. Rev Epidemiol Sante Publique 2000; 48 (01) 17-30
  • 70 Vasconcelles MJ, Bernardo MV, King C, Weller EA, Antin JH. Aerosolized pentamidine as pneumocystis prophylaxis after bone marrow transplantation is inferior to other regimens and is associated with decreased survival and an increased risk of other infections. Biol Blood Marrow Transplant 2000; 6 (01) 35-43
  • 71 Kitazawa T, Seo K, Yoshino Y. et al. Efficacies of atovaquone, pentamidine, and trimethoprim/sulfamethoxazole for the prevention of Pneumocystis jirovecii pneumonia in patients with connective tissue diseases. J Infect Chemother 2019; 25 (05) 351-354
  • 72 Argy N, Le Gal S, Coppée R. et al. Pneumocystis cytochrome b mutants associated with atovaquone prophylaxis failure as the cause of Pneumocystis infection outbreak among heart transplant recipients. Clin Infect Dis 2018; 67 (06) 913-919
  • 73 Cooley L, Dendle C, Wolf J. et al. Consensus guidelines for diagnosis, prophylaxis and management of Pneumocystis jirovecii pneumonia in patients with haematological and solid malignancies, 2014. Intern Med J 2014; 44 (12b): 1350-1363
  • 74 Hong Y-L, Hossler PA, Calhoun DH, Meshnick SR. Inhibition of recombinant Pneumocystis carinii dihydropteroate synthetase by sulfa drugs. Antimicrob Agents Chemother 1995; 39 (08) 1756-1763
  • 75 Pattishall KH, Acar J, Burchall JJ, Goldstein FW, Harvey RJ. Two distinct types of trimethoprim-resistant dihydrofolate reductase specified by R-plasmids of different compatibility groups. J Biol Chem 1977; 252 (07) 2319-2323
  • 76 Voeller D, Kovacs J, Andrawis V, Chu E, Masur H, Allegra C. Interaction of Pneumocystis carinii dihydropteroate synthase with sulfonamides and diaminodiphenyl sulfone (dapsone). J Infect Dis 1994; 169 (02) 456-459
  • 77 Pesanti EL, Cox C. Metabolic and synthetic activities of Pneumocystis carinii in vitro. Infect Immun 1981; 34 (03) 908-914
  • 78 Baggish AL, Hill DR. Antiparasitic agent atovaquone. Antimicrob Agents Chemother 2002; 46 (05) 1163-1173
  • 79 Gagnon S, Boota AM, Fischl MA, Baier H, Kirksey OW, La Voie L. Corticosteroids as adjunctive therapy for severe Pneumocystis carinii pneumonia in the acquired immunodeficiency syndrome. A double-blind, placebo-controlled trial. N Engl J Med 1990; 323 (21) 1444-1450
  • 80 Benfield TL, Helweg-Larsen J, Bang D, Junge J, Lundgren JD. Prognostic markers of short-term mortality in AIDS-associated Pneumocystis carinii pneumonia. Chest 2001; 119 (03) 844-851
  • 81 Dworkin MS, Hanson DL, Navin TR. Survival of patients with AIDS, after diagnosis of Pneumocystis carinii pneumonia, in the United States. J Infect Dis 2001; 183 (09) 1409-1412
  • 82 Fernandez P, Torres A, Miro JM. et al. Prognostic factors influencing the outcome in pneumocystis carinii pneumonia in patients with AIDS. Thorax 1995; 50 (06) 668-671
  • 83 Valerio A, Tronconi E, Mazza F. et al. Genotyping of Pneumocystis jiroveci pneumonia in Italian AIDS patients. Clinical outcome is influenced by dihydropteroate synthase and not by internal transcribed spacer genotype. J Acquir Immune Defic Syndr 2007; 45 (05) 521-528
  • 84 Mansharamani NG, Garland R, Delaney D, Koziel H. Management and outcome patterns for adult Pneumocystis carinii pneumonia, 1985 to 1995: comparison of HIV-associated cases to other immunocompromised states. Chest 2000; 118 (03) 704-711
  • 85 Liu Y, Su L, Jiang S-J, Qu H. Risk factors for mortality from pneumocystis carinii pneumonia (PCP) in non-HIV patients: a meta-analysis. Oncotarget 2017; 8 (35) 59729-59739
  • 86 Jin F, Xie J, Wang HL. Lymphocyte subset analysis to evaluate the prognosis of HIV-negative patients with pneumocystis pneumonia. BMC Infect Dis 2021; 21 (01) 441
  • 87 Gaborit BJ, Tessoulin B, Lavergne R-A. et al. Outcome and prognostic factors of Pneumocystis jirovecii pneumonia in immunocompromised adults: a prospective observational study. Ann Intensive Care 2019; 9 (01) 131
  • 88 Held J, Koch MS, Reischl U, Danner T, Serr A. Serum (1 → 3)-β-D-glucan measurement as an early indicator of Pneumocystis jirovecii pneumonia and evaluation of its prognostic value. Clin Microbiol Infect 2011; 17 (04) 595-602
  • 89 Monnet X, Vidal-Petiot E, Osman D. et al. Critical care management and outcome of severe Pneumocystis pneumonia in patients with and without HIV infection. Crit Care 2008; 12 (01) R28
  • 90 Akahane J, Ushiki A, Kosaka M. et al. Blood urea nitrogen-to-serum albumin ratio and A-DROP are useful in assessing the severity of Pneumocystis pneumonia in patients without human immunodeficiency virus infection. J Infect Chemother 2021; 27 (05) 707-714
  • 91 Festic E, Gajic O, Limper AH, Aksamit TR. Acute respiratory failure due to pneumocystis pneumonia in patients without human immunodeficiency virus infection: outcome and associated features. Chest 2005; 128 (02) 573-579
  • 92 Kumagai S, Arita M, Koyama T. et al. Prognostic significance of crazy paving ground grass opacities in non-HIV Pneumocystis jirovecii pneumonia: an observational cohort study. BMC Pulm Med 2019; 19 (01) 47
  • 93 Assal M, Lambert J, Chow-Chine L. et al. Prognostic impact of early adjunctive corticosteroid therapy in non-HIV oncology or haematology patients with Pneumocystis jirovecii pneumonia: a propensity score analysis. PLoS One 2021; 16 (04) e0250611
  • 94 Ishikawa Y, Nakano K, Tokutsu K. et al. Estimation of treatment and prognostic factors of pneumocystis pneumonia in patients with connective tissue diseases. RMD Open 2021; 7 (01) e001508
  • 95 Feng Q, Hao J, Li A, Tong Z. Prognostic Nomogram for Death from Pneumocystis Pneumonia in Non-HIV-and HIV-Infected Patients; 2021 15. 3055-3067 DOI: 10.2147/IJGM.S349786
  • 96 Pereira-Díaz E, Moreno-Verdejo F, de la Horra C, Guerrero JA, Calderón EJ, Medrano FJ. Changing trends in the epidemiology and risk factors of Pneumocystis pneumonia in Spain. Front Public Health 2019; 7: 275
  • 97 Ricciardi A, Gentilotti E, Coppola L. et al. Infectious disease ward admission positively influences P. jiroveci pneumonia (PjP) outcome: a retrospective analysis of 116 HIV-positive and HIV-negative immunocompromised patients. PLoS One 2017; 12 (05) e0176881
  • 98 Roux A, Canet E, Valade S. et al. Pneumocystis jirovecii pneumonia in patients with or without AIDS, France. Emerg Infect Dis 2014; 20 (09) 1490-1497