ONCO Flashcards
Hodgkin’s lymphoma is a malignancy of
mature B lymphocytes
Hodgkin’s lymphoma represents _____ of all lymphomas diagnosed each year
~10%
Majority of cases of Hodgkin’s lymphoma is
Classical HL (cHL)
One of the success stories of modern oncology is the success in the therapy of this disease
Classical HL (cHL)
A subtype of HL that is more related to the indolent B-cell NHLs biologically than it is to cHL
Nodular lymphocyte predominant HL (NLPHL)
New challenge in the treatment of Hodgkin’s lymphoma
late therapy-related toxicity
High rate of secondary malignancies and cardiovascular disease
Four distinct subtypes of classical Hodgkin’s lymphoma (cHL) that are differentiated based on their histopathologic features:
- Nodular sclerosis
- Mixed cellularity
- Lymphocyte-rich
- Lymphocyte-depleted
Classic HL that is more common in the younger age groups
Nodular sclerosis
Classic HL subtype that is more common in elderly patients, patients infected with HIV, and patients in Third World countries (2)
Mixed cellularity
Lymphocyte-depleted
Most common subtypes of classic HL (2)
nodular sclerosis and mixed cellularity types
Risk factors for classic HL (2)
- HIV
2. EBV
the malignant cells in HL
Reed-Sternberg (HRS) cells
Diagnostic of cHL
Reed-Sternberg (HRS) cells
Large cells with abundant cytoplasm with bilobed and/or multiple nuclei seen in cHL
Reed-Sternberg (HRS) cells
Reed-Sternberg cells express these 2 CD marker in 85 and 100% of cases, respectively
CD15 and CD30
97% of HRS cells in cHL harbor genetic aberrations in the ____ locus on chromosome ____
PD-L1
9p24.1
Most common finding in HL
Nontender palpable lymphadenopathy
Most common locations of palpabale lymph adenopathy in HL (3)
neck, supraclavicular area, and axilla
½ of patients of HL will have this adenopathy at diagnosis
Mediastinal adenopathy
Fever that persist for days to weeks, followed by afebrile intervals and then recurrence of the fever
Pel-Ebstein fever
In HL
Most common HL subtype that may present as FUO
mixed-cellularity HL in an abdominal site
More accurate than a bone marrow biopsy for evaluation of bone marrow involvement in cHL
PET/CT scan
as the bone marrow involvement in cHL tends to be patchy and therefore potentially missed on a unilateral bone marrow biopsy
Used for staging of HL
Ann Arbor staging system
Prognosis of advanced stage of cHL is bets predicted by the
International Prognostic Score (IPS)
International Prognostic Score (IPS) for cHL gives 1 point for each (7)
- Male sex
- Older age (>45 years)
- Stage IV disease
- Serum albumin <4 g/dL
- Hemoglobin <10.5 g/dL
- White blood cell count ≥15,000/μL
- Lymphocyte count <600/μL and/or <8% of WBC count
Five-year progression-free survival of cHL if with no risk factor or if with 4 and more risk factors:
88%
62%
Treatment recommendation for cHL
maximize treatment outcome without using radiotherapy
Most commonly used regimen in the early stage disease of cHL
ABVD (adriamycin, bleomycin, vinblastine, and dacarbazine)
Given every other week
Each cycle including two treatments
Treatment recommendation for favorable early stage disease of cHL
4–6 cycles of ABVD alone
Treatment recommendations for unfavorable early stage disease of cHL
- ABVD x4 cycles followed by involved field radiation therapy
- ABVD alone for 6 cycles
Treatment recommendations for bulky disease of cHL
Combined modality therapy
Treatment recommendations advanced stage disease of cHL
chemotherapy alone
ABVD x 6 cycles
Do not benefit from the addition of radiation therapy after a complete response to chemotherapy alone
Newer drugs for the treatment of relapsed HL (3)
Brentuximab
Pembrolizumab
Nivolumab
Antibody against CD30 conjugated to the microtubule inhibitor MMAE that is used for treatment of relapsed HL
Brentuximab
Drugs that target the PD-1/PD-L1 axis that used in the treatment of relapsed HL (2)
Pembrolizumab and nivolumab
T or F. Relapsed disease of HL can frequently still be cured
True
Usually not curable with subsequent chemotherapy administered at standard doses
Standard salvage chemotherapy regimens for relapsed HL (2)
- ICE (ifosfamide, carboplatin, etoposide)
* GND (gemcitabine, navelbine, doxil)
Most serious late side effects of HL chemotherapy (2)
- Second malignancy
* Cardiac injury
Most common second malignancies post HL chemotherapy in the first 10 years in regimens that contain alkylating agents plus radiation therapy
Acute leukemia
Most common second malignancies post HL chemotherapy that occur ≥ 10 years after treatment and are associated with use of radiotherapy
Carcinomas
Manifested by an “electric shock” sensation into the lower extremities on flexion of the neck that occurs in ~15% of patients who receive thoracic radiotherapy for HL
Lhermitte’s syndrome
HL subtype that sometimes transforms to diffuse large B-cell lymphoma
Nodular lymphocyte-predominant HL
Ann Arbor stage with Involvement of a single lymph node region or lymphoid structure (e.g., spleen, thymus, Waldeyer’s ring)
Ann Arbor Stage I
Ann Arbor stage with Involvement of two or more lymph node regions on the same side of the diaphragm
Ann Arbor Stage II
The mediastinum is a single site; hilar lymph nodes should be considered “lateralized” and, when involved on both sides, constitute stage II disease
Ann Arbor stage with involvement of lymph node regions or lymphoid structures on both sides of the diaphragm
Stage III
Ann Arbor stage with involvement of lymph node regions or lymphoid structures on both sides of the diaphragm, and with subdiaphragmatic involvement limited to spleen, splenic hilar nodes, celiac nodes, or portal nodes
Stage III-1
Ann Arbor stage with involvement of lymph node regions or lymphoid structures on both sides of the diaphragm, and with subdiaphragmatic involvement limited to spleen, splenic hilar nodes, celiac nodes, portal nodes, paraaortic, iliac, or mesenteric nodes
Stage III-2
Ann Arbor stage with Involvement of extranodal site(s) beyond that designated as “E”
IV