What is the most likely diagnosis for a 14-year-old boy presenting with a 2-week history of weight loss, night sweats, lethargy, and shortness of breath, with a painless fixed lymph node, anemia with blast cells on blood test, and a large mediastinal mass on chest X-ray?

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Jawapan: E - Hodgkin's Lymphoma

Diagnosis yang paling mungkin untuk budak lelaki berumur 14 tahun ini ialah Hodgkin's lymphoma (E), berdasarkan kombinasi klinikal klasik: jisim mediastinal yang besar, limfonodus leher yang tidak sakit dan tetap, gejala B (penurunan berat badan, peluh malam), dan umur pesakit.

Analisis Klinikal Mengikut Ciri-Ciri Penting

Ciri-Ciri Yang Menyokong Hodgkin's Lymphoma

Umur dan Demografi:

  • Hodgkin's lymphoma mempunyai puncak insiden bimodal, dengan puncak pertama pada dekad ketiga kehidupan (20-40 tahun), dan ramai pesakit adalah dewasa muda 1
  • Umur 14 tahun sesuai dengan kumpulan umur yang berisiko tinggi 1

Pembentangan Klinikal Klasik:

  • Lebih 60% pesakit Hodgkin's lymphoma mula-mula perasan limfonodus serviks yang membesar 1
  • Limfonodus yang tidak sakit dan tetap (fixed) adalah ciri khas Hodgkin's lymphoma 1
  • Jisim mediastinal yang besar adalah faktor risiko yang dikenali dalam sistem staging Hodgkin's lymphoma 1

Gejala B (B-symptoms):

  • Penurunan berat badan, peluh malam, dan demam adalah gejala B klasik yang mesti ditanya pada semua pesakit Hodgkin's lymphoma 1
  • Kehadiran gejala B menunjukkan penyakit yang lebih advanced dan mempengaruhi staging 1
  • Lethargi dan sesak nafas konsisten dengan jisim mediastinal yang besar 2

Mengapa Bukan Pilihan Lain

Bukan Leukemia (B):

  • Walaupun terdapat blast cells dalam darah, pembentangan klinikal lebih sesuai dengan Hodgkin's lymphoma 3
  • Leukemia dengan jisim mediastinal biasanya dikaitkan dengan acute lymphoblastic leukemia (ALL) T-cell, tetapi limfonodus serviks yang tetap dan tidak sakit lebih tipikal untuk Hodgkin's lymphoma 4
  • Kes yang dilaporkan menunjukkan Hodgkin's lymphoma boleh meniru leukemia, tetapi kombinasi jisim mediastinal besar dengan limfonodus serviks yang tetap lebih menyokong Hodgkin's lymphoma 3

Bukan Epstein-Barr Virus (A):

  • EBV boleh menyebabkan limfadenopati reaktif, tetapi limfonodus biasanya tidak tetap (fixed) 5, 6
  • Jisim mediastinal yang besar jarang berlaku dalam jangkitan EBV 6
  • Tempoh 2 minggu terlalu lama untuk jangkitan EBV akut yang biasanya self-limiting 6

Bukan Tuberculosis Limfonodus (C):

  • TB limfonodus boleh menyebabkan limfadenopati serviks, tetapi biasanya tidak dikaitkan dengan jisim mediastinal yang besar pada pesakit immunocompetent 3
  • Kes yang dilaporkan menunjukkan Hodgkin's lymphoma boleh meniru TB, menekankan kepentingan biopsi 3, 7

Bukan Sarcoidosis (D):

  • Sarcoidosis jarang berlaku pada kanak-kanak berumur 14 tahun 6
  • Walaupun sarcoidosis boleh menyebabkan limfadenopati mediastinal, kehadiran blast cells dalam darah tidak konsisten dengan diagnosis ini 6

Langkah Diagnostik Yang Diperlukan

Biopsi Limfonodus Adalah Mandatori:

  • Diagnosis Hodgkin's lymphoma sentiasa memerlukan biopsi limfonodus 1
  • Biopsi eksisional atau insisional lebih diutamakan daripada core needle biopsy 1
  • Sampel perlu mencukupi untuk pemeriksaan histologi dan immunohistokimia 1

Immunophenotyping Yang Diperlukan:

  • Classical Hodgkin's lymphoma: CD15+/CD30+/CD20- 1
  • Sel Reed-Sternberg yang positif untuk CD30 dan CD15 adalah diagnostik 1
  • Immunostaining untuk CD3, CD15, CD20, CD30, CD45, CD79a, dan PAX5 disyorkan 1

Peringatan Penting (Pitfalls)

Jangan Bergantung Pada Satu Ciri Sahaja:

  • Kehadiran blast cells boleh mengelirukan dengan leukemia, tetapi pembentangan klinikal keseluruhan lebih penting 3
  • Hodgkin's lymphoma boleh meniru TB dan sarcoidosis secara klinikal dan radiologi 3, 7
  • Biopsi berulang mungkin diperlukan jika diagnosis tidak jelas 3

Staging Segera Selepas Diagnosis:

  • PET/CT dari skull base ke mid-thigh adalah standard 1
  • Bone marrow biopsy tidak diperlukan jika PET scan negatif 1
  • Penilaian fungsi jantung dan paru-paru sebelum memulakan kemoterapi 1

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Guideline

Intraparotid Lymph Node Enlargement Causes and Diagnostic Criteria

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Differential Diagnosis for Enlarged Lymph Nodes

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Research

Primary multifocal osseous Hodgkin's lymphoma.

World journal of surgical oncology, 2008

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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