Pathomorphology and core process
Tumor involvement of the lymphatic system in Hodgkin's disease is accompanied by the formation of characteristic granulomas. This process leads to progressive enlargement of lymph nodes, involvement of the spleen, and other internal organs. The disease has distinct morphological and clinical differences from non-Hodgkin's lymphomas and lymphocytic leukemia.
The main histological criterion without which a diagnosis cannot be made is the identification of Reed-Sternberg cells. These are malignant giant cells containing two or more rounded nuclei. Specific transformation of lymphoid tissue is not limited to the nodes alone: pathological changes may affect the bone marrow, gastrointestinal tract, kidneys, and lungs.
Clinical presentation and lymphadenopathy
The disease typically begins insidiously. The clinical picture is dominated by two main syndromes: lymphadenopathy and general intoxication.
- Intoxication syndrome: Patients complain of severe fatigue and rapid weight loss. A specific sign is profuse night sweats. An intermittent-type fever is observed: temperature may rise to 39 °C, followed by periods of normalization.
- Skin involvement: From 10% to 50% of patients experience excruciating pruritus.
- Characteristics of lymphadenopathy: Disease onset is most commonly associated with enlargement of the cervical lymph nodes. Later, the mediastinal, axillary, and abdominal groups become involved. On palpation, the nodes are painless, have a dense or dense-elastic consistency, and are not fused to surrounding tissues. Hepatosplenomegaly develops.
Compression syndromes and extranodal lesions
As the lymph nodes grow, they begin to exert mechanical pressure on adjacent structures, leading to the development of compression syndrome. Symptoms directly depend on the location:
- Compression of the airways causes pronounced dyspnea.
- Pressure on the esophagus leads to dysphagia.
- Compression of the bile ducts provokes the development of obstructive jaundice.
- Compression of blood vessels causes impaired venous outflow.
In later stages, visceral involvement occurs. The lungs become the most frequent extranodal target. This manifests as infiltrative growth of mediastinal lymph nodes, diffuse infiltration of pulmonary tissue, and accumulation of exudate in the pleural cavity.
Laboratory diagnostics
A golden rule of propedeutics is that the diagnosis of lymphogranulomatosis is never established solely on clinical data. The gold standard is lymph node biopsy.
Peripheral blood changes:
- In the early stages, neutrophilic leukocytosis is recorded in approximately half of the patients.
- Over time, the development of lymphocytopenia is characteristic.
- Specific markers include high eosinophilia and a significant acceleration of ESR.
- In late stages, hematopoietic exhaustion leads to pancytopenia.
Reed-Sternberg cells themselves can sometimes be detected in the leukocyte concentrate. Additionally, bone marrow trephine biopsy is used.
Complications and treatment
Progression of lymphogranulomatosis leads to severe systemic consequences. Cachexia develops, and organ failure (hepatic and pulmonary) increases. A formidable complication is secondary amyloidosis, which culminates in chronic renal failure. A profound cellular immunity defect (impaired T-lymphocyte function) is also observed, making patients susceptible to infections.
Treatment principles:
- Radiation therapy (irradiation of affected areas).
- Prolonged cyclic polychemotherapy (drugs: adriamycin, vinblastine, cyclophosphamide, prednisone).
Briefly: answers to topical questions
What histological variants of lymphogranulomatosis are distinguished according to the WHO classification?
According to the revised WHO classification, two main types of Hodgkin's lymphoma are distinguished, one of which is further subdivided into variants.
| HL type | Features |
|---|---|
| Classical HL (cHL) | Main type, includes several histological variants |
| Nodular lymphocyte-predominant HL (NLPHL) | Independent type with a different pathogenesis and immunophenotype |
Histological variants of classical Hodgkin's lymphoma:
- Nodular sclerosis variant — includes types I and II.
- Mixed cellularity variant — without additional explanations in the classification.
- Lymphocyte-rich classical variant (lymphocyte-rich) — corresponds to the old name "lymphoid predominance".
- Lymphocyte depletion variant — a rare form.
Which specific polychemotherapy regimens (e.g., ABVD, BEACOPP) are the standard for treating lymphogranulomatosis?
Sources indicate that the treatment of lymphogranulomatosis includes radiation therapy and prolonged cyclic polychemotherapy.
The following regimens/schemes are specifically named:
- ABVD — in patients aged 18–60 years with early-stage disease and favorable prognosis according to PET/CT: 2–4 cycles of ABVD polychemotherapy.
- BEACOPP-escalated — indicated among intensive regimens for patients aged 18–60 years with advanced stages of cHL.
- BEACOPP-14 — indicated as a 14-day regimen and among intensive regimens.
- EACOPP-14 — indicated as a 14-day regimen and among intensive regimens.
- Sources also mention BV-AVD and modifications of regimens with dacarbazine.
The study guide also indicates that polychemotherapy regimens may include adriamycin, vinblastine, cyclophosphamide, prednisone.
Lymph node enlargement often proceeds "from top to bottom": first cervical, then mediastinal, axillary, and abdominal.
Class and exam questions
Is it possible to diagnose Hodgkin's lymphoma based on clinical symptoms alone?
No, the clinical picture does not provide grounds for a definitive diagnosis. A biopsy revealing Reed-Sternberg cells is mandatory.
Which lymph nodes are affected first?
In most cases, the disease debuts with painless enlargement of the cervical lymph nodes.
What is the cause of frequent infections in such patients?
The disease causes a pronounced cellular immunity defect and impaired T-lymphocyte function, which reduces the body's resistance.
What blood count changes are characteristic of early stages?
Neutrophilic leukocytosis is observed in 50% of patients. Accelerated ESR and pronounced eosinophilia are also typical.
What else to study on this topic
- Mechanisms of secondary amyloidosis development in tumors
- Differential diagnosis with non-Hodgkin lymphomas
- Polychemotherapy regimens: dosages and cycles
- Bone marrow involvement features and trephine biopsy
Master the entire topic in the "Propaedeutics" course
This is a summary. The course covers everything tested in classes and exams.
- Complete study guide on the topic «Hodgkin's Lymphoma» and 3,152 more pages of the subject
- Assignments and quizzes after every topic — just like in a colloquium
- AI tutor answers questions on the topic anytime
- 113 video lessons on the subject
Other topics in the "Blood System" section
Prepared by WhiteCoat Pro faculty in accordance with the medical school curriculum. For educational purposes only.