|Year : 2019 | Volume
| Issue : 11 | Page : 3766-3768
Common presentation of an uncommon anaemia in a resource-limited setting: A diagnostic challenge
Shankar Roy1, Monika Pathania1, Ravi Kant1, Minakshi Dhar1, Amisha1, Paras Malik1, Vyas Kumar Rathaur2
1 Department of Medicine, AIIMS, Rishikesh, Uttarakhand, India
2 Professor, KD Medical College Hospital and Research Institute, Mathura, Uttar Pradesh, India
|Date of Submission||10-Jul-2019|
|Date of Decision||22-Aug-2019|
|Date of Acceptance||05-Sep-2019|
|Date of Web Publication||15-Nov-2019|
Dr. Vyas Kumar Rathaur
Head of Department, Department of Medicine, AIIMS, Rishikesh, Uttarakhand
Source of Support: None, Conflict of Interest: None
A 38-year-old female in the reproductive age group presented with anaemia in a resource-poor setting. The patient was given multiple transfusions during the course of her treatment. After a proper work-up she was diagnosed with Coomb's negative autoimmune haemolytic anaemia (AIHA). She was later treated with steroid and she showed significant improvement. Early diagnosis in her case at the primary care level with other causes of anaemia in mind could have prevented unnecessary transfusions and morbidity. Proper history and approach to anaemia is the key in a resource-poor setting.
Keywords: Autoimmune haemolytic anaemia, blood transfusion, Coomb's negative, haemolysis
|How to cite this article:|
Roy S, Pathania M, Kant R, Dhar M, Amisha, Malik P, Rathaur VK. Common presentation of an uncommon anaemia in a resource-limited setting: A diagnostic challenge. J Family Med Prim Care 2019;8:3766-8
|How to cite this URL:|
Roy S, Pathania M, Kant R, Dhar M, Amisha, Malik P, Rathaur VK. Common presentation of an uncommon anaemia in a resource-limited setting: A diagnostic challenge. J Family Med Prim Care [serial online] 2019 [cited 2021 Apr 12];8:3766-8. Available from: https://www.jfmpc.com/text.asp?2019/8/11/3766/270929
| Introduction|| |
The most common nutritional deficiency disorder in the world is anaemia. As per the National family health survey -3 (NFHS), 55% of women in India are anaemic, and iron deficiency is the most common cause for it.
Autoimmune haemolytic anaemia (AIHA) is a rare type of anaemia with an incidence of 0.8 to 3% per 100,000/year. The diagnosis of AIHA is done by direct antiglobulin test (DAT) and indirect antiglobulin test (IAT). These tests were discovered back in 1945 by Coombs, Mourant, and Race. But, gradually, the cases of Coomb's negative AIHA cases were getting reported. Among reported cases of AIHA in the Western data, 5 to 10% were Coomb's negative. Although proper Indian data are lacking, here we are reporting one of those rare cases of AIHA with negative Coomb's test along with a history of multiple transfusion in district-level hospitals. In a country like India, it is a common practice in the primary level of care to transfuse blood and then to put on long nutrition supplements as a therapeutic measure for anaemia. The same happened to our patient also. Hence, an intelligent suspicion, followed by proper referral or accurate diagnostic work-up can prevent the use of unnecessary blood products and related complications. Here lies the importance of thorough clinical examination and picking up the important findings, especially when working in a resource-limited setup.
| Case History|| |
A 38-years-old female without prior comorbidity presented to the medicine outpatient department (OPD), with chief complaints of generalised weakness for 4 months, yellowish discolouration of the sclera for the past 1 month, and history of multiple blood transfusion in past 2 months without any improvement. There was no history of any drug exposure (e.g. penicillin or cephalosporin groups); pregnancy loss; family history or evidence of infection, hematemesis, melena, haematuria, rash, joint paint and/or fever. On general examination, she was found to be obese with a body mass index (BMI) of 26.4, with pallor and icterus, without any lymphadenopathy or clubbing, koilonychia, glossitis or angular stomatitis. Her vitals were stable with splenomegaly 5 cm below the left costal margin, without any ascites. Other system examinations were found to be within normal limits. Her routine investigations [Table 1] showed severe anaemia with high mean corpuscular volume (MCV), high reticulocyte count, unconjugated hyperbilirubinemia with high lactate dehydrogenase (LDH) value along with normal vitamin B12, folate, iron and ferritin level. Peripheral blood smear, although got affected by multiple transfusions outside, showed a dimorphic anaemia picture with adequate white blood cell (WBC) and platelet count. Other anaemia work-up including DAT and IAT were found to be negative. But, her anti-nuclear anti-bodies (ANA) report was positive with a speckled pattern in 1:100 titrations. Further advanced investigations were not done due to affordability issues.
Viral markers (HBsAg, Anti-HCV, Anti-HIV): Negative
Urine routine and microscopy: WNL
LDH: 380 unit/L, Vitamin B12: 1437, Folate: >24, Iron: 85 mg/dL, Ferritin: 1424.6 ng/mL, Cortisol: 28.65 ug/dL
FT3: 2.01, FT4: 1.39, TSH: 5.06
ICT for malarial parasite: Negative
USG abdomen: Hepatosplenomegaly with hyper-dynamic portal circulation
ANA: Positive (1:100), DCT: Negative, ICT: Negative, G-6PD: 754
Osmotic fragility test: Negative, Sickling test: Negative
Peripheral smear: No hemoparasite seen, Bone marrow aspiration: Suggestive of haemolytic anemia with marrow showing erythroid hyperplasia with megaloblastic maturation
Differential diagnoses of Coomb's negative anaemia are hereditary spherocytosis (HS), paroxysmal nocturnal haemoglobinuria (PNH), haemolytic uremic syndrome (HUS), G6PD deficiency and subsequent drug exposure.
The patient was started on steroid (prednisolone 1 mg/kg/day) therapy after ruling out any infection. Her haemoglobin concentration significantly improved from 2.9 to 4.1 g/dL, and in the next 5 days, it further improved up to 5.3 g/dL. Thus, a diagnosis of Coomb's negative AIHA was retrospectively confirmed. Oral proton pump inhibitor (PPI) and calcium vitamin D3 supplements were added to minimise the side effects of the steroid.
Outcome and follow-up
Over the course of hospital stay, the patient improved and was discharged with the advice to follow-up for tapering the steroid and to start immune modulators (azathioprine, cyclosporine, etc.)
| Discussion|| |
Haemolytic anaemia can be inherited or acquired. One of the most common causes of acquired haemolytic anaemia is the immunologic destruction of red blood cells (RBCs). In general, the clinical features are severe anaemia, jaundice, splenomegaly, haemoglobinuria, reticulocytosis and raised LDH.
The classification of AIHA is as follows:
- Warm autoimmune haemolytic anaemia (wAIHA)
- Cold autoimmune haemolytic anaemia
- Cold agglutinin disease (CAD)
- Paroxysmal cold haemoglobinuria (PCH)
- Mixed autoimmune haemolytic anaemia
The most common form (>80%) of AIHA is due to IgG antibodies that react with its antigen at the core body temperature, i.e. 'warm agglutinins'. The AIHA is diagnosed by a positive DAT or IAT, also called the Coomb's test. The patient's RBC is washed with saline, then anti-human globulin (AHG) is added, following which RBC suspensions are centrifuged and examined for agglutination. In the gel micro-column method, the red cells are filtered through a gelatinous matrix mixed with AHG reagents and then the non-agglutinated RBCs pass through the column.
AIHA with negative DAT is uncommon and warrants further etiological work-up. In our case, most of these came negative. The proposed mechanism for Coomb's negative test is that IgM and, particularly, IgA antibodies (if present) may be undetected by the polyclonal anti-human-globulin serum. Therefore, a special DAT using anti-IgA or anti-IgM antibodies may be required in such cases. However, due to financial constraints, these tests could not be done in our case.
Differential diagnoses of Coomb's negative anaemia are HS, PNH, HUS, G6PD deficiency and subsequent drug exposure. HS was ruled out by the absence of family history, osmotic fragility test and peripheral smear examination. PNH was ruled out by a normal platelet and WBC count with normal urine and no evidence of thrombosis. HUS was ruled out as there was no history of preceding diarrhoea-like symptoms and without typical peripheral smear and normal kidney function tests. The absence of insulting drug history and a normal G6PD level on laboratory investigation has compelled us to exclude the diagnosis of G6PD deficiency.
The AIHA treatment is mainly to prevent the immune destruction of the RBCs. Steroids are the first line of treatment, with prednisolone 1 mg/kg body weight. Once the haemoglobin is settled and reticulocytosis is resolved, steroids can be tapered off over several weeks. The response to steroid therapy may take a few days to 3 weeks. The second line of therapy includes splenectomy and anti-CD20 monoclonal antibody (mAbs) rituximab. If splenectomy is not appropriate for any cause, immune modulators can be started, such as azathioprine, cyclosporine, mycophenolate or cyclophosphamide.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
Head of Department, Department of Medicine, AIIMS Rishikesh.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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