Langerhans Histiocytosis
For details see Histiocytic lesions Clinical features Cytopathology For details see Histiocytic lesions The authors do not have any experience of fine needle aspiration in this particular presentation in children. Immunocytochemistry For details see Histiocytic lesions Modern Techniques of Diagnosis For details see Histiocytic lesions Differential Diagnosis Main points
Hamartoma
Clinical features Fig 88 – Lung Hamartoma Smear from a transthoracic guided fine needle aspiration, Fragment of mesenchyma in a myxoid matrix. (H&E) Immunocytochemistry No contributory Modern Techniques of Diagnosis No contributory Differential Diagnosis
Inflammatory pseudo tumour
Clinical features Fig 91 – Inflammatory pseudotumor – Smear from a transthoracic guided fine needle aspiration – Poorly cohesive polymorphic population (fibroblasts, Histiocytes, lymphocytes and plasma cells) (H&E) Immunocytochemistry Modern Techniques of Diagnosis Non contributory Differential Diagnosis Main points
Carcinoid
Clinical features Fig 93 – Carcinoid – Smear from a transthoracic guided fine needle aspiration. Uniform population of single round/ oval regular neoplastic cells. Occasionally cells get together in small acini. Clear background (H&E). Unless you see necrosis, differential diagnosis between typical and atypical carcinoid should not be done in cytology Immunocytochemistry Genetic studies Differential […]
Pulmonary blastema of childhood (Pleuropulmonary blastema)
Clinical features Fig 95 – Pulmonary Blastoma of Childhood – Smear from a transthoracic guided fine needle aspiration composed of a big three-dimensional cellular group of blastematous cells (Giemsa) Immunocytochemistry Genetic Studies Differential Diagnosis Main points
VIII- TUMORS OF RESPIRATORY TRACT
Pancreatoblastoma
Clinical features Cytopathology Immunocytochemistry Modern Techniques of Diagnosis Differential Diagnosis Main points
Solid pseudo papillary-cystic tumour
Clinical features Fig 83- Solid –pseudopapillary neoplasm -– Delicate papillary groups (Giemsa) Immunocytochemistry Genetic Studies Differential Diagnosis Main points
VII- TUMORS OF THE PANCREAS
Focal nodular hyperplasia
Clinical features Cytopathology Immunocytochemistry Non-contributory Modern diagnostic techniques Non-contributory Differential diagnosis Main points