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DIAGNOSTIC CYTOPATHOLOGY PowerPoint Presentation

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Description : Check out this medical presentation on Pathology, which is titled "DIAGNOSTIC CYTOPATHOLOGY", to know about diagnostic cytopathology and its significance in biopsy investigation.

Tags : Pathology, Diagnostic Cytopathology, Significance, Biopsy Investigation

Published on : Aug 03, 2021 | Views : 5121 | Downloads : 14

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DIAGNOSTIC CYTOPATHOLOGY DR. SANJIV KUMAR ASSTT. PROFESSOR, DEPTT. OF PATHOLOGY, BVC, PATNA
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CONTENTS INTRODUCTION APPLICATIONS TECHNIQUES SMEAR FORMATION FIXATION STAINING METHODS INTERPRETATIONS
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INTRODUCTION Is a branch of pathology that studies and diagnoses diseases on the cellular level. OR Interpretation of cells that has either exfoliated spontaneously or are obtained from various organs/ tissue by different clinical methods.
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PRINCIPLES OF CYTOTECHNIQUE TO REDUCE THE SPECIMEN TO A CELLULAR PRESENTATION, WHICH CAN BE INTERPRETED AND DIAGNOSED
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MATERIALS REQUIRED
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aDVANTAGES Simple Rapid test Inexpensive No or minimum injury during sampling DISADVANTAGES Interpretation based on few cells It is not a final diagnosis Cannot determine size and type of lesions on some cases
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Remember CYTOPATHOLOGY SHOULD BE COMPARED TO HISTOPATHOLOGY!
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APPLICATIONS Cytogenetics-for chromosomal studies. Identification of benign neoplasms Diagnosis and management of cancer. Diagnosis of non-neoplastic/inflammatory conditions. Diagnosis of specific infections. Hormonal imbalance. To follow up progress or improvement in disease process. Diagnosis of specific infections. A variety of bacterial, viral, protozoal and fungal infections can be identified by cytological methods.
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STEPS IN CYTOPATHOLOGY SAMPLE COLLECTION SMEAR PREPARATION FIXATION OF SAMPLE STAINING OF SMEAR INTERPRETATION
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SAMPLES Exfoliated cells, Aspirated cells and body fluids The sample can be collected by: scrapping the lateral walls of vagina fresh early morning sputum bronchial washings buccal smears gastric lavage fresh catheterized urine samples pericardial, pleural and peritoneal fluids CSF Etc.
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Preparation of samples
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TECNIQUES OF CYTOPATHOLOGY EXFOLIATIVE CYTOLOGY This is an older branch that essentially involves the study of cells spontaneously shed off from epithelial surfaces into body cavity or body fluids. Basis is alteration in morphology and less cohesiveness of cells. INTERVENTIONAL CYTOLOGY This is the branch in which samples are obtained by clinical procedures or surgical intervention. It is also known as aspiration cytology.
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BLOOD LESS TYPE
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INTERVENTIONAL CYTOLOGY This is the branch in which samples are obtained by clinical procedures or surgical intervention. It is also known as aspiration cytology. It includes fine needle aspiration cytology (FNAC), Biopsy, imprint cytology and crush smear cytology.
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IMPRINT CYTOLOGY: here touch preparations from cut surfaces of superficial excised lesions are prepared. Advantage is that the cell distribution reflects the tissue architecture thus aiding in interpretation. ii. CRUSH SMEAR CYTOLOGY: are helpful in diagnosis of tumors. It provides the recognition of tissue architecture in addition to better cytological details. iii. FNAC: It has gained importance in the last three decades. Almost all fine needle accessible organs can be aspirated for cytological studies. iv. BIOPSY: Removal of tissue from a living animal for examination (microscopic & chemical) so that a diagnosis can be made.
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Disadvantages: Chances of haematomas, infection, Pneumothorax etc. Involves surgical interaction. Collect fewer cells than scrapings.
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IMRINT CYTOLOGY
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CRUSH SMEAR
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FNAC APPLICATIONS Applied in diagnosis of Palpable as well as Non palpable lesion PALPABLE MASS LESION i)Lymph node ii)Breast (duct carcinoma) iii)Thyroid iv)Salivary gland v) Soft tissue masses vi)Bones NON PALPABLE MASS LESION i)Abdominal cavity ii)Thoracic cavity iii)Retroperitonium
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Taking palpable mass in FNAC-
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LIMITATIONS
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FIXATION
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DIAGNOSTIC CYTOPATHOLOGY DR. SANJIV KUMAR ASSTT. PROFESSOR, DEPTT. OF PATHOLOGY, BVC, PATNA
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All material for cytological examination must be properly fixed to ensure preservation of cytomorphological details. Methods of fixing vary depending upon the type of staining employed. Materials is usually wet-fixed for use with Papanicolaou or H&E staining. Sometimes, air-dried for use in Romanowsky staining. Special purpose fixative may be buffered neutral formalin, bouin’s fluid and picric acid
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STAINING WET FIXED i. Papanicolaou or H&E staining. AIR DRY FIXED Romanowsky staining. Wright’s stain. Giemsa stain. May Grunwald giemsa stain. Wright’s Giemsa stain.
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papanicolaou staining wet fixed
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INTERPRETATION NORMAL ABNORMAL INFLAMMATORY NON INFLAMMATORY NON SEPTIC SEPTIC NON NEOPLASTIC NEOPLASTIC HYPERTROPHY MALIGNANT BENIGN HYPERPLASIA
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BEAUTY OF CYTOPATHOLOGY Guess the images ?????
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