a case of primary myelofibrosis

53
A Case of Menorrhagia Dr Jishanth M Prof Dr A Gowrishankar’s Unit M3, Dept of Internal Medicine, SMC

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Page 1: A Case of Primary Myelofibrosis

A Case of Menorrhagia

Dr Jishanth M

Prof Dr A Gowrishankar’s UnitM3, Dept of Internal Medicine, SMC

Page 2: A Case of Primary Myelofibrosis

PATIENT PROFILE

• Ms Latha, 32 yr, unmarried, admitted on 4.9.10

• Presenting Complaints:Easy fatigability-2monthsBreathlessness-2monthsExcessive menstrual bleeding-1week

Page 3: A Case of Primary Myelofibrosis

• History of Present illness:

• Insidious onset, gradually progressive exertional breathlessness and fatigability for 2 months

• Pedal edema and puffiness of face +• Excessive menstrual bleeding for last 7 days with

passage of clots• H/o joint pain involving both elbows+• H/o head ache +

Page 4: A Case of Primary Myelofibrosis

• No rash, bleeding gums, swelling of joints, bone pain, fever, night sweats, cough with expectoration, hemoptysis, chest pain, orthopnoea, PND

• No h/o jaundice, abdominal distension, hematemesis, melena

• No h/o easy bruisability or uncontrolled bleeding after trivial trauma

Page 5: A Case of Primary Myelofibrosis

• Past medical history:

Admitted at GRH in Feb ’09• Similar complaints with bleeding gums and arthralgia (Δ:

Iron def anemia), received blood transfusion• Discharged after complete evaluation with advice for follow

up.

Admitted at RSRM in May ’10• Excessive bleeding, severe than previous episode, received

blood transfusion, was reevaluated.

• No diabetes, hypertension, RHD, tuberculosis or recurrent jaundice

Page 6: A Case of Primary Myelofibrosis

• Personal History:• Menarche at 12 yrs, • Regular cycles 3-4/30days• Menorrhagia(10/30) with clots for last 6 months

• Family history:• Born of non consanguinous marriage, • No bleeding disorders

Page 7: A Case of Primary Myelofibrosis

• On Examination:• Patient was conscious, oriented• Afebrile, moderately built, poorly nourished• Dyspnoeic and Tachypnoeic• Pallor++, facial puffiness +• No J/Cy/Cl/LNE• No rash, no petechiae, ecchymosis, hemarthroses• Mild bilateral Pedal edema +• No bone tenderness

Page 8: A Case of Primary Myelofibrosis

• Vitals• PR: 90/min, regular• BP: 110/70 mm Hg• RR: 24/min

• CVS: S1S2 heard, systolic murmer +• RS: NVBS b/l, no added sounds

• Abdomen: soft, normal in shape• No dilated veins, liver palpable 2 cm, firm, non tender• Splenomegaly(8cm), firm, smooth, non tender• CNS: No FND, no meningeal signs, fundus N

Page 9: A Case of Primary Myelofibrosis

• Provisional Diagnosis:

• Anaemia with Hepatosplnomegaly• To R/o hematological Malignancy

Page 10: A Case of Primary Myelofibrosis

Investigations• Hb: 3.3 g%• TC:2600• DC: P80l18E2• ESR: 70/95 mm• PCV: 11%• Platelet: 33,000

• Sugar: 84• Urea: 22• Creatinine: 0.8

• Na: 132• K: 3.6

• Bleeding Time: 2 min 30s• Clotting time: 4 min 30s

• CXR: mild cardiomegaly, ↑BVM

• ECG: Sinus rhythm, tachycardia+

Page 11: A Case of Primary Myelofibrosis

Peripheral Smear• RBCs:

Microcytic, hypochromic RBCsNo nucleated RBCs seen. No sickle cells. No target cells. No inclusion bodies

• WBCs: Leukopenia observedDistribution and morphology normalNo immature cells seen

• Platelets: Thrombocytopenia • Parasites: No blood parasites

Page 12: A Case of Primary Myelofibrosis

• Pancytopenia + Hepatosplenomegaly

• Chronic Infections• Thalassemias• Hemoglobinopathies• Sideroblastic Anemia• Iron Deficiency (IDA)• Myelofibrosis

Page 13: A Case of Primary Myelofibrosis

What happened in feb 2009

• BT/CT Normal• CXR: Cardiomegaly• Usg Abd:

Splenomegaly• Echo: Normal Study

• Stool occult blood: Negative

• Peripheral Smear: Microcytic hypochromic, ovalocytes+ ellipsocytes+, WBCs normal, platelets adequate

• Reticulocyte count: normal• Bone Marrow: Erythroid

hyperplasisa

Hb 5.6 8.0

TC 5200 5900

DC P53L45E2 P58L40E2

ESR 75/120 9/19

Plt 1.56 1.3

Diagnosis: Nutritional anemia/Iron deficiency with CCF

Page 14: A Case of Primary Myelofibrosis

In may 2010Date 30/4 4/5 5/5 6/5 8/5 20/5

Hb 3.0 4.8 6.2 5.0 8.4 10.4

PCV 9% 15% 18% 15% 25%

TC 4800 4900 4900 5200 3300

DC P80L18E2 P83L15M2

Platelets 33,000 95,000 2.0L 1.1L 14,000

• PT 12.2s/ INR 0.94• APTT 28.9s• TFT: Normal

Sr Bb 3.1mg% / D Bb 0.5mg%Sr Protein: 6.6gAlb: 3.4gSGOT 35 U/LSGPT 30 U/LSAP 285 U/L

Page 15: A Case of Primary Myelofibrosis

• Diagnosis:

Pancytopenia/ HSM/ Iron deficiency anemia

• She was discharged once general conditions improved with advice to have a follow up.

Page 16: A Case of Primary Myelofibrosis

Investigations contd

• PT 12.6 s/ INR 1.0• APTT 26.2s• HBsAg, Anti HCV negative• HIV negative• Mantoux test: Negative

Page 17: A Case of Primary Myelofibrosis

• LFT Bb: 2.9mg%D Bb: 2.2mg%

• Protein: 6.1 g%• Alb: 3.2 g%• RFT/SE: normal• USG & portal doppler: Splenomegaly, normal

doppler study• Reticulocyte count: 1.8%• Stool occult blood: negative

Page 18: A Case of Primary Myelofibrosis

• Hematologist & Rheumatologist opinions were obtained…

• BMA(8/9/10)• Adviced to screen for connective tissue

diseases

Page 19: A Case of Primary Myelofibrosis

• ANA: negative• CRP: 13.3 mg/L (<5 mg/L negative)• RA Factor: negative

• Coombs Test:DCT NegativeICT negative

Page 20: A Case of Primary Myelofibrosis

• BMA(8/9/10): Erythroid hyperplasia

• RBC count: 1.06 million• MCV: 72.6fl ↓ (76-96)• MCH: 15.1pg ↓ (27-31)• MCHC: 20.8 ↓ (32-36 %)• RDW: 22.9 ↑ (11.5-14.5 %)

• Serum Iron: 10.8μg/dl ↓ (37-145)• Serum Ferritin: 2.35ng/ml ↓ (13-150)• TIBC: 334.0 μg/dl N (149-491)

• Hematologist review: Severe iron deficiency anemia• Advised further serum assays.

Page 21: A Case of Primary Myelofibrosis

• Serum Vit B12: 737.4 pg/ml N (211-946)• Folic Acid: 5.85 ng/ml N (3.1-17.5)

• Serum LDH: 267 IU/L N (150-400)

• Hemoglobin Electrophoresis:Hb F : not detectable (<1%)Hb A2: 2.8 (2-3.7%)Hb A: 94 (>95%)Impression: normal

Page 22: A Case of Primary Myelofibrosis

• Peripheral Smear was repeated

• RBCs: Normocytic hypochromicSpherocytes +Occassional teardrop cells +

• Platelets decreasedGiant platelets + (7-8μ)

Page 23: A Case of Primary Myelofibrosis

• On 14th BMA was repeated:

• Hypercellular, mild erythroid hyperplasia• Megakaryocytes +, Atypical cells 5%• Dyserythropoiesis+• Micromegakaryocytes+

Page 24: A Case of Primary Myelofibrosis

• Based on this report a bone marrow biopsy was done on 17th:

• Cellular marrow showing preponderance of granulocyte precursors including eosinophil precursors, plasma cells, megakaryocytes, large histiocyte like cells with abundant eosinophilic cytoplasm and vesicular nucleus and foci of fibrosis

• Imp: Early cellular phase of myelofibrosis

Page 25: A Case of Primary Myelofibrosis

Final Diagnosis

Primary Myelofibrosis (Prefibrotic stage)

Page 26: A Case of Primary Myelofibrosis

Anemia Suspected

Thorough Clin, Bleed Hb%, RCC, Hct Decreased

RPI, Retic count <2 RPI, Retic count >2

Hemolytic Anemia

Coombs DAT, IDAT

Hb electrophoresis

Osmotic fragility

MCV, MCH, MCHC, PSE

Microcytic hypochromic Macrocytic hypo/normo

Megaloblastic NormoblasticIron Def. Anemia

Ferritin, TIBC, BM Fe

Thalassemia, Hb pathy

Sederoblastic Anaem.

Chr. Infection, Lead

Folate defici.

B12 def., PA

Ca, Leukemia, Ulcer

Identify the cause

ALD, CLD, Drug

Chr. Renal dis.

Hypothyroid

BM infiltration

Acid hemolysis

Cold agglutinins

Coagulopathy, DIC

Algorithm for Diagnosis of Anemia

Page 27: A Case of Primary Myelofibrosis

WHO Operational Categories

Page 28: A Case of Primary Myelofibrosis

Primary Myelofibrosis(Myelofibrosis with Myeloid Metaplasia)

• First described in 1879• Later classified in 1951 as a myeloproliferative disorder• Agnogenic myeloid metaplasia/Idiopathic myelofibrosis• Myeloproliferative disorders include

1. Chronic myeloid Leukemia(Ph)2. Polycythemia Vera3. Essential Thrombocytosis4. Primary Myelofibrosis

In 1960 -Philadelphia chromosome, Ph(t9:22) (BCR-ABL)

In 2005- JAK2V617F- a novel GOF mutation of JAK2 tyrosine kinase- in PV(100%), ET & PMF (50%)

Page 29: A Case of Primary Myelofibrosis

Primary Myelofibrosis

• It is a rare disease• 1.3/100,00 people• Median age 57yrs (90% are >40)• Ashkenazy Jews• Clonal stem cell disorder• Classified as chronic myeloproliferative disorder

• WHO system- CIMF( chronic idiopathic myelofibrosis )• Myeloid metaplasia refers to earlier proliferative

phase where extramedullary hematopoiesis predominates

• <5% of ET go to MMM after 10-20 years

Page 30: A Case of Primary Myelofibrosis

Pathogenesis Clonogenic mutations ?JAK2 tyrosine kinase ?Thrombopoietin receptor

Page 32: A Case of Primary Myelofibrosis

Clinical features• Chronic, idiopathic progressive

anemia/thrombocytopenia• Extramedullary hematopoiesis - HSM • Splenomegaly is the hallmark

• Constitutional hypercatabolic syndromes (Fatigue, fevers, weight loss, night sweats)- ultimately go for cachexia.

• As spleen enlarges, pts may have left upper quadrant discomfort, abdominal pain & early satiety

Page 33: A Case of Primary Myelofibrosis

• Pruritus, easy bruising, lymphadenopathy • Peripheral edema, ascites• Bleeding/thrombosis• Splenic infarcts• EMH—LN, pleura, peritoneum, lung, paraspinal &

epidural spaces• Secondary gout• All myeloproliferative disorders can result in a spent

phase which can be difficult to distinguish from primary MF

Page 34: A Case of Primary Myelofibrosis

Diagnosis

• Peripheral blood smear • normocytic anemia• granulocytes and platelets. • myelophthisis (most characteristic finding)• leukoerythroblastosis (nucleated RBCs and granulocyte

precursors)• teardrop-shaped RBCs (dacryocytes)

• Bone Marrow:cellular phase(↑granulocytic and MKcytic,

↓erythrocytic )hypocellular phasefibrosis/osteosclerosis- usually dry tap

• Confirmed by bone marrow biopsy( reticulin stain)

Page 35: A Case of Primary Myelofibrosis

Bone Marrow Features

• Ineffective erythropoiesis• Dysplastic-megakaryocyte hyperplasia (secrete

PDGF, TGF-, VEGF, bFGF, TNF)• Increase in ratio of immature to total granulocytes• Reactive bone marrow fibrosis (polyclonal

fibroblasts)• Thickening and distortion of the bony trabeculae

(osteosclerosis)• Bcr-abl negative

Page 36: A Case of Primary Myelofibrosis

Normal Bone Marrow

Page 37: A Case of Primary Myelofibrosis

Tefferi A. N Engl J Med 2000;342:1255-1265

Myelofibrosis Peripheral Blood Bone Marrow

Page 38: A Case of Primary Myelofibrosis

Bone marrow in myelofibrosis

H&E Stain Reticulin stain

Page 39: A Case of Primary Myelofibrosis

Tear Drop Cells

1. Myelofibosis

2. Infiltration of BM

3. Tumours of BM

4. Thalassemia

Page 40: A Case of Primary Myelofibrosis

Proposed Modifications in Diagnostic Criteria

MAJOR1. Atypical megakaryocytic

hyperplasia with reticulin/collagen fibrosis

2. Exclusion of WHO criteria for PV, CML, MDS, Other MPDs

3. JAK2V617F or other clonal marker, if not rule out seconadary fibrosis

MINOR (2 out of 4)1. Leukoerythroblastosis2. Elevated serum LDH3. Anemia4. Palpable splenomegaly

Page 41: A Case of Primary Myelofibrosis

Diagnostic Problems

• Neither myelophthisis nor marrow fibrosis is diagnostic• Myeloid / Lymphoid / Non hematological disorders• Close mimickers are

CML MDS Atypical MPD AML

Specific tests include • JAK2V617F screening • cytogenetics • FISH for BCR-ABL

Page 42: A Case of Primary Myelofibrosis

Disorders causing myelofibrosis Malignant• Acute leukemia• CML• Hairy cell leukemia• Hodgkin Disease• Idiopathic myelofibrosis• Lymphoma • Multiple myeloma• Myelodysplasia• Metastatic carcinoma• PV, ET

Nonmalignant

• HIV Infection• Hyperparathyroidism• Renal osteodystrophy• SLE• Tuberculosis• Vit D deficiency• Thorotrast exposure• Gray platelet syndrome

Page 43: A Case of Primary Myelofibrosis

Disease Course

• As disease progresses majority of patients become transfusion dependent ( 2U in 7-14 d)

• Thrombocytopenia/neutropenia• Spenomegaly and discomforts• Symptomatic portal hypertension• Bone pain• Non thrombotic pulmonary hypertension• Blastic transformation ~ 10% (2.6 month)

• Death: infection, bleeding, heart failure, liver failure, portal htn, respiratory failure

Page 44: A Case of Primary Myelofibrosis

Prognosis

• Median survival 3-5 yrs• Adverse prognostic factors:

Anemia, Age >64Hypercatabolic sx (wt loss, fatigue, NS, fever)WBC>30 or <4, Blasts>1%Cytogenetics +8, 12p-

• Most recent PSS (Mayo clinic)Plt < 100 x10⁹/LHb <10 g%TLC <4 or >30 x10⁹/LAb. Monocyte >1 x10⁹/L

Median survival in pts <60 yrs 14.4/5/2.2 yrs

Page 45: A Case of Primary Myelofibrosis

Treatment

• There is no definitive therapy – “WATCHFUL WAITING”

• Rx is supportive, with PRBC transfusions

• Drug therapy• Splenectomy• Radiation therapy• Allogenic SCT

Page 46: A Case of Primary Myelofibrosis

Drug therapy

• Erythropoietin – 40,000 U weekly (endo Epo <125 U/L), response rate is 50%

• Corticosteroids, prednisone .5-1mg/kg (52/29%)• Androgens: Testo. Enanthate 400-600 mg im/wk, (30-40%)• Androgens + corticosteroids• Danazol – synthetically modified testo.- 600 mg/d (30-

40%)• Thalidomide(50mg/d) & Lenalidomide in del5q

( improves splenomegaly & thrombocytopenia)• Hydroxyurea - DOC for symptomatic SM• Cladribine/ Melphalan / Busulphan/ Daunorubicin

Page 47: A Case of Primary Myelofibrosis

Splenectomy

Indications for surgery:

1. Symptomatic portal hypertension2. Drug refractory splenomegaly with machanical

& hypercatabolic symptoms3. Frequent transfusion requirement

Page 48: A Case of Primary Myelofibrosis

Radiation Therapy

• Useful mainly for non hepatosplenic extra medullary hemopoiesis in PMF

• Thoracic vertebral column- most frequent site

• Other sites: LN, lung, pleura, small bowel, peritoneum, urogenital tract and heart

• Idiopathic Pulm htn (due to occult pulmonary EMH)- single fraction whole lung irradiation

Page 49: A Case of Primary Myelofibrosis

Allogenic Stem Cell Transplantation

• Risk benefit ratio is not favorable

• But young patients have survival upto 60% at 5 yrs ( comp. to 14% in >44 yrs)

Page 50: A Case of Primary Myelofibrosis

Back to our patient• 32 yr, unmarried, menorrhagia, chronic anemia….of

late we have diagnosed a disease with poor PSS where the treatment to date is ineffective

• Pending investigations are bone marrow iron staining cytogenetic analysis

• Patient is now on 1. Danazol 200mg TDS 2. Prednisolone 10 mg OD3. Folic Acid 5 mg OD4. FST/Multivitamins5. PRBC transfusions

Page 51: A Case of Primary Myelofibrosis

Future

• Current treatment is inadequate…• Each patient is different, response to therapy

also different.• Eagerly looking for “small-molecule drug

therapy” targeting JAK2 or its downstream effector molecules (STAT3, STAT5)

• Imatinib did wonders…. Future looks promising

Page 52: A Case of Primary Myelofibrosis

References

• Harrisons Principles of Internal medicine 17th Ed• Robbin’s Pathology• Wintrobe’s Hematology

Page 53: A Case of Primary Myelofibrosis