Malignancy of mature B lymphocytes
Hodgkin’s Lymphoma
4 Histologic subtypes of HL
1. Nodular sclerosis – most common in young adults (US)
2. Mixed cellularity
3. Lymphocyte-rich
4. Lymphocyte-depleted
nodular sclerosis + mixed cellularity = ~95% of cases
Diagnostic cell of cHL
**Reed-Sternberg (HRS) **
Large cell
Abundant cytoplasm
Bilobed or multinucleated nucleus
Detected in 20–40% of all HL
~100% of HIV-associated cHL
Epstein-Barr virus (EBV)
EBV genomes are episomal & clonal → supports role in early lymphomagenesis
Rare cyclic fever pattern in HL
PEL EBSTEIN FEVER
days–weeks of fever – afebrile interval – recurrence
STANDARD FOR STAGING
more sensitive than bone marrow biopsy
bone marrow involvement is patchy in cHL
PET/CT scan
Tumor features of HL
rare malignant B cells (Reed-Sternberg cells)
immunoglobulin genes rearranged but not expressed
background of polyclonal inflammatory infiltrate
Treatment of HL
HIGHLY CURABLE
chemotherapy alone or chemotherapy + radiotherapy
ADVANCED-stage disease:
No benefit from routine radiotherapy
EARLY-STAGE cHL (Stage I–II)
ABVD (doxorubicin, bleomycin, vinblastine, dacarbazine)
given every 2 weeks
1 cycle = 2 treatments
ADVANCED-STAGE cHL (Stage III–IV)
ABVD ×6 cycles
NO ROUTINE RADIOTHERAPY AFTER COMPLETE RESPONSE
RADIOTHERAPY INCREASES RISK OF:
secondary malignancies
thyroid disease
premature cardiovascular disease and stroke
RELAPSED cHL
Salvage chemotherapy → autologous stem cell transplant (ASCT)
Cure rate: >50% if chemo-sensitive
COMMON SALVAGE REGIMENS
ICE (ifosfamide, carboplatin, etoposide)
GND (gemcitabine, vinorelbine, doxorubicin)
MC presentation of HL
FEVER