20 years old male presented with gradual onset of swelling left arm. D/d

60 YOM with painless lower neck mass Differential Diagnosis?

Patient complains of sudden onset pain in epigastrium region, retrosternal discomfort. ECG done. What is the diagnosis?

### A 12 years old boy with c/o left shoulder pain several weeks ago, followed by a gradual, painful swelling of the shoulder joint. What is most likely diagnosis?

11 year old boy presented with a large lt sided cervical swelling with facial congestion for 3 months. No other associated symptoms. On examination, the swelling is soft, oval, measuring 18*15 cm, on the lot side of the neck, extending to the mediastinum, causing tracheal shift to the right. No axillary or inguinal lymph node enlargement. No hepatosplenomegaly. All blood investigations done 3 months ago were done and showed nothing abnormal. Ultrasound shows enlarged cervical lymph nodes. X-ray as shown above. Patient was admitted for further assessment. What is your plan?