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ICM- Hematology and Oncology
Hodgkin's lymphoma (T Pierce)
23
Medical
Professional
11/30/2009

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Cards

Term
definition of lymphoma
Definition
  • cohesive malignant proliferation of abnormal lymphocytes arising in LN and/or lymphoid tissue of other organs (extranodal)
  • normal LN architecture is effaced and/or infiltrated by this malignant proliferation of lymphoid cells
Term
clinical presentation of lymphoma (note differences btw HL and NHL)
Definition
  • painless nodal enlargement
  • constitutional symptoms
    • fever
    • malaise
    • night sweats
    • weight loss
    • pruritis
  • extranodal involvement more common in NHL than HD
  • in NHL, tx determined by histology and stage
  • in HD, tx determined by stage
  • HD usually involves contaguous lymph nodes (aka its local)
  • bone marrow involvement is rare at presentation in HD
  • bone marrow involvement common in NHL
Term
Staging of lymphoma
Definition
  • I- single LN region or singly extralymphatic organ or site
  • II- involvement of two or more LN regions on same side of diaphrame
  • III- LN involvement above or below diaphrame
  • IV- organ involvement
    • A- none of below
    • B
      • unexplained wieight loss of more than 10% body weight in six months before dx
      • night sweats
      • unexplained fever with temperature above 38 degrees
Term
epidemiology of Hodgkin's lymphoma
Definition
  • risk factors
    • viral infections
    • associated with EBV
    • genomic detection of EBV DNA in over 50% of nodular sclerosis and mixed cellularity subtypes
    • wood workers
    • hereditary predisposition (common HLA types)
Term
classification of HL
Definition
  • classical Hodgkin lymphoma
    • nodular sclerosis (I or II)
    • lymphocyte rich
    • mixed cellularity
    • lymphocyte depleted
  • nodular lymphocyte predominant Hodgkin's lymphoma
Term
clinical presentation of HL
Definition
  • painless enlargement of peripheral LN (cervical or supraclavicular areas)
  • diffurse pruritis
  • backpain if retroperitoneal LN enlargement
  • dyspnea if mediastinal LN enlargement
  • rare- pain with alcohol ingestion
  • rare at presenation- hepatosplenomegaly
  • B symptoms
    • unexplained weight loss
    • night sweats
    • unexplained fever
Term
dx of Hodgkin's lymphoma
Definition
  • excisional biopsy needed
  • staging
    • CBC, ESR, LFTG, albumin, BUN/creatinine
    • CT chest/abdomen/pelvis
    • PET scan
    • bone marrow aspiration/biopsy
  • PFT, ECHO/MUGA
  • fertility counseling as appropriate
  • HIV if risk factors present
Term
criteria for histoplathological dx of HL
Definition
  • Reed-Sternberg cell
  • appropriate "background" cellular architecture
Term
Histopathologically, what separates HD from NHL
Definition
  • R-S and mononoclear neoplastic cells constitute a small fraction of tumor
  • the rest of the tumor consist of normal reactive lymphocytes, inflammatory cells, and/or fibrosis
Term
Markers expressed by R-S cells
Definition
  • lymphocyte activation Ag
    • CD30 (Ki-1)
    • CD25 (IL-2 R)
    • CD71 (transferrin R)
  • granulocyte marker
    • Leu-M1 (CD15)
Term
unfavorable factors in prognosis of HL
Definition
  • bulky disease
    • mass greater than 1/3 chest diameter
    • any mass greater than 10 cm
  • ESR greater than 50
  • more than 3 sites of disease
  • B symptoms
  • greater than or equal to 2 extranodal sites
Term
IPS for advanced HD
Definition
  • male gender
  • Hb less than 10.5
  • albumin less than 4.0
  • age greater than 45
  • stage IV disease
  • WBC greater than 15000
  • lymphocyte count less than 600
Term
tx of stage I, II HL
Definition
  • radiotherapy in standard tx w/ 90% overall survival
  • alternative approach- less intense chemo with radiotherapy without laparotomy
  • pts with bulky disease (mediastinum) or with B symptoms are candidates for combined chemotherapy and radiotherapy
Term
tx of stage III, IV HL
Definition
  • chemotherapy is primary tx
  • 60% of pts can be cured
  • mostly use ABVD
    • adriamycin
    • bleomycin
    • vinblastine
    • dacarbazine (DTIC)
Term
complications of HL therapy
Definition
  • immunologic deficits/infections (HZV mainly, with some getting post splenectory pneumococcal sepsis)
  • thyroid dysfunction (hypothyroidism)
  • cardiac/pulmonary dysfunction
  • gonadal dysfunction
  • secondary malignancies
Term
fields of administered tx for HL
Definition
  • mantle field (in thorax, head, neck)
  • inverted Y (abdomen, perineum)
Term
salvage therapy for HL (purpose, regime)
Definition
  • for relapses (most relapses happen within 5 yrs)
  • complete response rates to second line chemo are high in pts who receive no prior chemo or whose relapses occured more than one yr after initial therapy
  • pts who relapse within yr from inital chemo who never achieved complete response are candidates for high dose therapy and hematopoietic stem cell transplants
Term
tx of lymphocyte predominant HL
Definition
  • early stage favorable- involved field radiation and chemo
  • advanced- chemo w/ ABVD
  • consider rituximab since many pts CD20 positive
  • some centers use CHOP or EPOCH as LPHL (behave like indolent NHL in some cases)
Term
Describe lung injury seen in tx of HL
Definition
  • radiation pneumonitis- elevated combined modality and larger fields
  • decreased PFT after therapy but most patients imp;rove
  • combination bleomycin and lung radiation pneumonitis can be severe
  • G CSF may make it worse
Term
Describe cardiac disease seen in tx of HL (who has highest risk)
Definition
  • mediastinal radiation of major risk factor
  • relative risk of cardiac death 3.1
  • highest risk in pts tx before age 20
Term
potential bone complications in those tx for HL
Definition
  • osteonecrosis
  • decrease bone density in both men and women
  • aplasia after radiotherapy
Term
Ascending Relative risk of malignancy complications of therapy from HL
Definition
  1. gastric cancer
  2. cardiac disease
  3. lung cancer
  4. breast cancer
Term
dx test used to best monitor pts
Definition
PET scan
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