Abstract
Culture negative endocarditis (CNE) is a common concern in patients with fever, heart murmur, cardiac vegetation, and negative blood cultures. The diagnosis of CNE is not based only on negative blood cultures and a cardiac vegetation. The clinical definition of CNE is based on negative blood cultures plus the findings of culture positive infective endocarditis (IE), e.g., fever, cardiac vegetation, splenomegaly, peripheral manifestations. Because embolic splenic infarcts may occur with culture positive IE, some may assume that splenic infarcts are a sign of CNE. Previously, CNE was due to fastidious and non-culturable organisms. With current diagnostic methods, fastidious organisms grow in 2–3 days. Therefore, fastidious IE are a subset of culture positive IE, but do not represent true CNE. We describe a case of an elderly female who presented with a fever of unknown origin (FUO) and multiple splenic infarcts thought by some to represent CNE. An extensive workup for CNE pathogens was negative. The final cause of her splenic infarcts was a diffuse large B-cell lymphoma (DLBCL). Review of the literature, as well as this case, confirms that splenic infarcts are not a feature of CNE. In patients with fever, splenic infarcts, and negative blood cultures, physicians should search for an alternate explanation rather than CNE, e.g., malignancy and hypercoaguable state (lupus anticoagulant).
Similar content being viewed by others
References
Peterdorf RG, Beeson PB (1961) Fever of unexplained origin: report on 100 cases. Medicine (Baltimore) 40:1–3
Peterdorf RG (1992) Fever of unknown origin: an old friend revisited. Arch Intern Med 152:21–22
Murray HW (ed) (1983) FUO: fever of undetermined origin. Futura Publishing, Mount Kisko
Cunha BA (ed) (2007) Fever of unknown origin. Informa, New York
Brusch JL, Weinstein L (1988) Fever of unknown origin. Med Clin N Am 72:1247–1261
Cunha BA (2007) Fever of unknown origin: focused diagnostic approach based on clinical clues from the history, physical examination, and laboratory tests. Infect Dis Clin N Am 21:1137–1187
Cunha CB (2017) Diagnositc tests in infectious diseases. In: Cunha CB, Cunha BA (eds) Antibiotic Essentials, 15th edn. JayPee Medical Publishers, New Delhi, pp 1137–1187
Cunha BA (2004) Fever of unknown origin. In: Gorbach SL, Bartlett JG, Blacklow NR (eds) Infectious diseases, 3rd edn. Lippincott Williams & Wilkins, New York, pp 1568–1577
Cunha CB, Cunha BA (2015) Fever of unknown origin. In: Schlossberg D (ed) Clinical infectious disease. Cambridge University Press, Cambridge, pp 2–12
Cunha BA (2004) Fever in malignant disorders. Infect Dis Pract 26:335–336
Luft FC, Rissing JP, White A, Brooks GF (1976) Infections or neoplasm as causes of prolonged fever in cancer patients. Am J Med Sci 272:65–74
Meytes D, Ballin A (1991) Unexplained fever in hematologic disorders: malignant hematologic disorders. In: Isaac B, Kernbaum S, Burke M (eds) Unexplained fever. CRC Press, Boca Raton, pp 209–224
Wang C, Armstrong D (1983) Neoplastic disease. In: Murray HW (ed) FUO: fever of undetermined origin. Futura, Mount Kisko, pp 39–46
Roca CV, Rodriguez SH (2007) Malignant lymphomas presenting as fever of unknown origin. An Med Interna 24:531–534
Weinstein L, Brusch JL (eds) (1996) Infective endocarditis. Oxford University Press, New York
McDermott BP, Cunha BA, Choi D, Cohen J, Hage J (2011) Transthoracic echocardiography (TTE): sufficiently sensitive screening test for native vale infection endocarditis (IE). Heart Lung 40:358–360
Rubenson DS, Tucker CR, Stinson EG (1981) The use of echocardiography in diagnosing culture negative endocarditis. Circulation 64:641–646
Cunha BA (2007) The mimics of endocarditis. In: Brusch J (ed) Infectious endocarditis. Informa, NY, pp 345–353
Van Scoy RE (1982) Culture negative endocarditis. Mayo Clin Proc 5:149–154
Brusch J (2007) Organisms of blood culture-negative endocarditis. In: Brusch J (ed) Infectious endocarditis. Informa, NY, pp 73–99
Raoult D, Casalta JP, Richet H, Khan M, Bernit E, Rovery C et al (2005) Contribution of systemic serological testing in diagnosis of infective endocarditis. J Clin Microbiol 43:5238–5242
Houpikian P, Raoult D (2005) Blood culture negative endocarditis in a reference center. Medicine 84:162
Lamas CC, Eykyn SJ (2003) Blood culture negative endocarditis: analysis of 63 cases presenting over 25 years. Heart 89:258
Fournier PE, Thuny F, Richet H, Lepidi H, Casalta JP, Arzouni JP et al (2010) Comprehensive diagnostic strategy for blood culture negative endocarditis: a prospective study of 819 new cases. Clin Infect Dis 51:131–140
Pesanti EL, Smith IM (1979) Infective endocarditis with negative blood cultures: an analysis of 52 cases. Am J Med 66:43–50
Cannaday PB, Sanford JP (1976) Negative blood cultures in infective endocarditis: a review. South Med J 69:1420–1424
Brouqui P, Raoult D (2001) Endocarditis due to rare and fastidious bacteria. Clin Microbiol Rev 14:177–207
Brensilver HL, Kaplan MM (1975) Significance of elevated liver alkaline phosphatase in serum. Gastroenterology 68:1556–1562
Cunha BA (2007) Fever of unknown origin (FUO). Diagnostic serum ferritin levels. Scand J Infect Dis 39:651–652
Cunha BA (2004) Diagnostic significance of nonspecific laboratory tests in infectious diseases. In: Bartlett JG, Blacklow NR (eds) Infectious diseases, 3rd edn. Lippincott Williams, Baltimore, pp 158–166
Baldridge CW, Awe CD (1938) Lymphoma: a study of one hundred and fifty cases. Arch Intern Med 45:161–190
Hsi ED, Gascoyne RD, Goldblum RD (2007) Diffuse aggressive B-cell lymphomas. In: His ED, Goldblum RD (eds) Hematopathology. Churchill Livingston, Philadelphia, pp 259–282
Jaroch MT, Broughan TA, Hermann RE (1986) The natural history of splenic infarction. Surgery 100:743–750
Goerg C, Schwerk WB (1990) Splenic infarction: sonographic patterns, diagnosis, follow up and complications. Radiology 174:803–807
Nores M, Phillips EH, Morgenstern L, Hiatt JR (1998) The clinical spectrum of splenic infarction. Am Surg 64:182–188
Antopolsky M, Hiler N, Salameh S, Godstein S, Stalnikowicz R (2009) Splenic infarction: 10 years of experience. Am J Emerg Med 27:262–265
Cunha BA, Sivarajah T, Jimada I (2017) Sarcoidosis with fever and a splenic infarct due to CMV or lymphoma? Heart Lung 46:394–396
Cunha BA, Petelin A (2013) Fever of unknown origin (FUO) due to large B-cell lymphoma: the diagnostic significance of highly elevated alkaline phosphatase and serum ferritin levels. Heart Lung 42:67–71
Iioka F, Honjo G, Misaki T et al (2016) A unique subtype of duffuse large B-cell lymphoma primarily involving the bone marrow, spleen and liver defined by fluorodeoxyglucose-positron emission tomography combined with computed tomography. Leuk Lymphoma 57:2593–2602
Cunha BA (2007) Fever of unknown origin: clinical overview of classic and current concepts. Infect Dis Clin N Am 21:867–915
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Ethical approval
N/a
Informed consent
N/a
Rights and permissions
About this article
Cite this article
Cunha, B.A., Dieguez, B. & Varantsova, A. Lessons learned from splenic infarcts with fever of unknown origin (FUO): culture-negative endocarditis (CNE) or malignancy?. Eur J Clin Microbiol Infect Dis 37, 995–999 (2018). https://doi.org/10.1007/s10096-018-3200-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10096-018-3200-3