EHA Library - The official digital education library of European Hematology Association (EHA)

LYMPHOID NEOPLASMS: A REALLY IMPORTANT TRIGGER IN HEMOPHAGOCYTIC LYMPHOHISTIOCYTOSIS
Author(s): ,
Violeta Martinez Robles
Affiliations:
Hematology and Hemotherapy,Complejo Asistencial Universitario de Leon (CAULE),Leon,Spain
,
Sara Calleja
Affiliations:
Inmmunology,Complejo Asistencial Universitario de Leon (CAULE),Leon,Spain
,
Belén Ballina
Affiliations:
Hematology and Hemotherapy,Complejo Asistencial Universitario de Leon (CAULE),Leon,Spain
,
Seila Cerdá
Affiliations:
Hematology and Hemotherapy,Complejo Asistencial Universitario de Leon (CAULE),Leon,Spain
,
Silvia Fernández-Ferrero
Affiliations:
Hematology and Hemotherapy,Complejo Asistencial Universitario de Leon (CAULE),Leon,Spain
,
Fernando Escalante
Affiliations:
Hematology and Hemotherapy,Complejo Asistencial Universitario de Leon (CAULE),Leon,Spain
,
Fernando Ramos
Affiliations:
Hematology and Hemotherapy,Complejo Asistencial Universitario de Leon (CAULE),Leon,Spain
José Antonio Rodríguez-García
Affiliations:
Hematology and Hemotherapy,Complejo Asistencial Universitario de Leon (CAULE),Leon,Spain
(Abstract release date: 05/18/17) EHA Library. Martinez-Robles V. 05/18/17; 182796; PB2082
Dr. Violeta Martinez-Robles
Dr. Violeta Martinez-Robles
Contributions
Abstract

Abstract: PB2082

Type: Publication Only

Background

Triggered by several conditions Hemophagocytic lymphohistiocytosis (HLH) is an unusual, aggressive and life-threatening dysfunction caused by an excessive immune activation. It has become more recognized over the past decade. HLH was first described in 1939 by Scott and Robb-Smith, next case was reported in 1952 by Farquhar and Claireaux describing two infant siblings with progressive and lethal cytopenias, hepatosplenomegaly, and fevers with autopsy showing hemophagocytosis.
A lengthy and unstoppable activation of antigen-presenting cells (macrophages, histiocytes) and CD8+ T and NK cells is characteristic. This condition leads to an important hyperinflammatory situation and organ damage including splenomegaly, fever, cytopenia, hypertrigliceridemia and/or coagulapathy.
Histiocyte Society (HS) criteria have been applied for diagnosing HLH, however not all of them are usually showed at the presentation.
This disease can be described in two different scenarios: primary (usually in children, genetic, and known as familial form) and secondary (acquired). It can be triggered by a large variety of events that disrupt inmune homeostasis. When we talk about triggers, we can divide them in two broad categories, those that cause inmune activation and those that lead to inmune deficiency. Lymphoid neoplasms can be both.

Aims
Due to the lack of publications about HLH secondary to Lymphoid Neoplasms (LN), we would like to analyze the casuistry of our hospital and making a comparison with the current literature.

Methods

We conducted a retrospective analysis through medical files of all patients with suspected diagnosis of HLH between 1994 and 2017 in our in patient ward. Clinical features, age, diagnostic criteria proposed by the HS, etiology, treatment and evolution were analyzed. In our study 18 out of 50 patients met the requested criteria for HLH diagnosis.

Results
We report 10 LN secondary cases (4 males, 6 females). The median age at diagnosis was 60,5 years, ranged between 46 and 80 years. In all of them, but in one, who presented long-term pancytopenia, symptoms were developed very fast. The most frequent causes of consultation were cytopenia and general syndrome. In two of them HLH was diagnosed with LN relapse, in one patient during a transformation from a low-grade B-cell lymphoma to DLBCL (Diffuse large B-cell lymphoma), in 6 of them we diagnosed LN and HLH concomitantly, and in the last one coinciding with a Richter Syndrome. Four of 10 were secondary to T-cell neoplasm. All patients met 5 o more HS diagnostic criteria. In only 3 of them HLH was healed. One patient is still in remission. Nine died, 7 of them due to HLH complications. Treatment was chemotherapy (depending on their LN) in almost all of them. Fluctuations were detected among activity HLH parameters due to LN response. Detailed characteristics of patients are shown in table 1.

Conclusion
HLH triggered by LN is diagnosed in older patients than other causes secondary HLH (46-80 vs. 4-84 y/o in our center), we think this is because in our experience there are not children or Young adult in HLH due to LN group. We would like to highligt that although LN is a very commom HLH trigger there are a few works describing them in the literature, that is why we would like to spread our experience. We would like to emphasize in he importance of an early diagnosis. Despite being a serious disease, it is still underdiagnosed, reaching the diagnosis most of the times after seeing hemophagocytic phenomena in bone marrow biopsy. Agreeing with literature, main consulting reasons are similar to our series. Correlation between neoplastic activity and inmune activation, as well as test and facts which could predice evolution should be more studied.

Finally we would like to address the necessity of considering this possibility in the face of a patient with fever which does not respond to antibiotics and has not clarified citopenia, as well as the importance of conducting cheap and very profitable test such as ferritin or tryglycerides level when symptoms or clinical features of lymphoid neoplasm are not concordant with the expected evolution.

Session topic: 31. Other Non-malignant hematopoietic disorders

Keyword(s): lymphoma

Abstract: PB2082

Type: Publication Only

Background

Triggered by several conditions Hemophagocytic lymphohistiocytosis (HLH) is an unusual, aggressive and life-threatening dysfunction caused by an excessive immune activation. It has become more recognized over the past decade. HLH was first described in 1939 by Scott and Robb-Smith, next case was reported in 1952 by Farquhar and Claireaux describing two infant siblings with progressive and lethal cytopenias, hepatosplenomegaly, and fevers with autopsy showing hemophagocytosis.
A lengthy and unstoppable activation of antigen-presenting cells (macrophages, histiocytes) and CD8+ T and NK cells is characteristic. This condition leads to an important hyperinflammatory situation and organ damage including splenomegaly, fever, cytopenia, hypertrigliceridemia and/or coagulapathy.
Histiocyte Society (HS) criteria have been applied for diagnosing HLH, however not all of them are usually showed at the presentation.
This disease can be described in two different scenarios: primary (usually in children, genetic, and known as familial form) and secondary (acquired). It can be triggered by a large variety of events that disrupt inmune homeostasis. When we talk about triggers, we can divide them in two broad categories, those that cause inmune activation and those that lead to inmune deficiency. Lymphoid neoplasms can be both.

Aims
Due to the lack of publications about HLH secondary to Lymphoid Neoplasms (LN), we would like to analyze the casuistry of our hospital and making a comparison with the current literature.

Methods

We conducted a retrospective analysis through medical files of all patients with suspected diagnosis of HLH between 1994 and 2017 in our in patient ward. Clinical features, age, diagnostic criteria proposed by the HS, etiology, treatment and evolution were analyzed. In our study 18 out of 50 patients met the requested criteria for HLH diagnosis.

Results
We report 10 LN secondary cases (4 males, 6 females). The median age at diagnosis was 60,5 years, ranged between 46 and 80 years. In all of them, but in one, who presented long-term pancytopenia, symptoms were developed very fast. The most frequent causes of consultation were cytopenia and general syndrome. In two of them HLH was diagnosed with LN relapse, in one patient during a transformation from a low-grade B-cell lymphoma to DLBCL (Diffuse large B-cell lymphoma), in 6 of them we diagnosed LN and HLH concomitantly, and in the last one coinciding with a Richter Syndrome. Four of 10 were secondary to T-cell neoplasm. All patients met 5 o more HS diagnostic criteria. In only 3 of them HLH was healed. One patient is still in remission. Nine died, 7 of them due to HLH complications. Treatment was chemotherapy (depending on their LN) in almost all of them. Fluctuations were detected among activity HLH parameters due to LN response. Detailed characteristics of patients are shown in table 1.

Conclusion
HLH triggered by LN is diagnosed in older patients than other causes secondary HLH (46-80 vs. 4-84 y/o in our center), we think this is because in our experience there are not children or Young adult in HLH due to LN group. We would like to highligt that although LN is a very commom HLH trigger there are a few works describing them in the literature, that is why we would like to spread our experience. We would like to emphasize in he importance of an early diagnosis. Despite being a serious disease, it is still underdiagnosed, reaching the diagnosis most of the times after seeing hemophagocytic phenomena in bone marrow biopsy. Agreeing with literature, main consulting reasons are similar to our series. Correlation between neoplastic activity and inmune activation, as well as test and facts which could predice evolution should be more studied.

Finally we would like to address the necessity of considering this possibility in the face of a patient with fever which does not respond to antibiotics and has not clarified citopenia, as well as the importance of conducting cheap and very profitable test such as ferritin or tryglycerides level when symptoms or clinical features of lymphoid neoplasm are not concordant with the expected evolution.

Session topic: 31. Other Non-malignant hematopoietic disorders

Keyword(s): lymphoma

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