Intro -- Contents -- About the Author -- 1: Introduction and Basic Techniques of Aspiration Cytology in Superficial and Deep Lesions -- 1.1 Advantages [1-5] -- 1.2 Needle Tract Seeding -- 1.3 The Basic Technique of FNAC -- 1.4 Post FNAC -- 1.4.1 Fine-Needle Sampling Technique -- 1.4.2 Fixatives -- 1.4.3 Staining -- 1.5 Deep-Seated FNAC -- 1.5.1 Indications of Deep-Seated Lesions -- 1.6 USG Guided FNAC (Fig. 1.5) -- 1.7 CT Guided FNAC -- 1.8 Endoscopic Ultrasound Guided -- 1.9 Magnetic Resonance Image Guided -- 1.10 Mammographic Guided -- References

2: Interpretation of Fine Needle Aspiration Cytology Smear -- 2.1 Malignant Cells -- 2.1.1 Cell -- 2.1.2 Nucleus -- 2.2 Interpretation of FNAC Smear -- 2.3 Evaluation of the Cytological Features -- 2.3.1 Cellular Arrangement -- 2.4 Individual Cells -- 2.4.1 Cell Shape -- 2.4.2 Cytoplasm -- 2.4.3 Cytoplasmic Area -- 2.4.4 Vacuolation in Cytoplasm -- 2.5 Nucleus -- 2.5.1 Nuclear Pleomorphism -- 2.5.2 Nuclear Margin -- 2.5.3 Nucleoli -- 2.5.4 Background of the Smear -- 2.5.5 False-Positive Cases -- 2.6 False-Negative Smear -- References

3: Aspiration Cytology of Head, Neck and Orbital Lesions -- 3.1 Cysts in the Neck Region -- 3.1.1 Branchial Cyst [1-4] -- 3.1.2 Thyroglossal Cyst [5, 6] -- 3.1.3 Cystic Hygroma [7] -- 3.1.4 Acquired Cyst -- 3.1.4.1 Non-neoplastic -- 3.1.5 Mucocele [9] -- 3.2 Lymph Node Lesion in Head-Neck Region -- 3.2.1 Difficulties -- 3.3 Paraganglioma [10-12] -- 3.3.1 Carotid Body Tumour [11, 13] -- 3.3.2 Differential Diagnosis (Figs. 3.34, 3.35, and 3.36) -- 3.3.3 Nasopharyngeal Carcinoma (NPC) [14-16] -- 3.3.4 Parathyroid Neoplasm [17-20] -- 3.3.5 Meningioma [21-27]

3.3.6 Olfactory Neuroblastoma [28, 29] -- 3.4 Lesions in the Base of the Skull -- 3.4.1 Orbital lesion -- 3.4.2 Lesions of the Eyelid -- 3.4.3 Tumours of the Eyelid -- 3.4.3.1 Basal Cell Carcinoma (BCC) [30, 31] -- 3.4.3.2 Sebaceous Carcinoma [32-34] -- 3.5 Lacrimal gland -- 3.5.1 Pleomorphic Adenoma [35] -- 3.5.2 Adenoid Cystic Carcinoma (ADC) -- 3.5.3 Mucoepidermoid Carcinoma -- 3.5.4 Intraorbital Tumours -- 3.5.4.1 Retinoblastoma [36-38] -- 3.5.5 Malignant melanoma [39-41] -- 3.5.6 Rhabdomyosarcoma -- 3.5.7 Acute Leukaemia Infiltration -- 3.5.8 Lymphoma [35, 42-44]

3.5.9 Metastatic Malignancy [35, 45-49] -- References -- 4: Aspiration Cytology of Salivary Gland -- 4.1 The Major Advantages of FNAC [1-4] -- 4.1.1 Complications of FNAC -- 4.1.2 Anatomy and Histology of the Salivary Glands -- 4.1.3 Parotid Gland -- 4.1.4 Submandibular Gland -- 4.1.5 Sublingual Gland -- 4.1.5.1 Histology of the Salivary Gland -- 4.1.6 Cytology of the Salivary Gland (Figs. 4.1, 4.2, 4.3, 4.4 and 4.5) -- 4.2 Diagnostic Accuracy -- 4.2.1 Causes of False-Positive FNAC -- 4.2.2 Causes of False-Negative FNAC [10] -- 4.2.3 The Major Difficulties in the Diagnosis [10]