RESUMEN
AIMS: To find the spectrum and frequency of lower gastrointestinal malignancies and diagnostic accuracy of colonoscopic brush cytology in their diagnosis. MATERIALS AND METHODS: This was a prospective study carried out on 49 patients in the Department of Pathology over 1 year. Brushing material was smeared directly onto at least two clean glass slides. The air dried smears were stained with May Grunwald Giemsa stain. The endoscopic biopsies were examined grossly and were fixed in 10% formalin, processed and stained with Hematoxylin and Eosin stain, respectively. Special stains were used wherever required. OBSERVATION AND RESULTS: The study was done on 49 patients presented with colorectal and anal lesions. Age of the patients ranged from 17 to 72 years with male to female ratio being 1.57:1. On statistical analysis, the sensitivity of colonoscopic brush cytology was found to be 85.71% and specificity 61.53%. The accuracy came out to be 79.16%. CONCLUSION: Brush cytology is a reliable, safe, inexpensive, and rapid method of diagnosing gastrointestinal lesions. Since brushing is a relatively noninvasive procedure, routine use of brushings of colonoscopically visible lesions should be done, in addition, to biopsy to increase the diagnostic yield.
Asunto(s)
Colonoscopía/normas , Neoplasias Colorrectales/diagnóstico , Citodiagnóstico/métodos , Adolescente , Adulto , Anciano , Biopsia , Neoplasias Colorrectales/patología , Citodiagnóstico/normas , Eosina Amarillenta-(YS)/química , Femenino , Humanos , Masculino , Azul de Metileno/química , Persona de Mediana Edad , Adulto JovenRESUMEN
AIM: To find the spectrum and frequency of upper gastrointestinal malignancies and diagnostic accuracy of endoscopic brush cytology in their diagnosis. MATERIALS AND METHODS: This study was a prospective study carried out on 251 patients over 1-year in the Department of Pathology. Brushing material was smeared directly on to at least two clean glass slides and was stained with May-Grunwald-Giemsa stain. The endoscopic biopsies were examined grossly and were fixed in 10% formalin, processed, and stained with hematoxylin and eosin stain. OBSERVATION AND RESULTS: The age range of the patients varied from 8 to 90 years, with the mean being 56 years. Male to female ratio was 2.5:1. On brush cytology, out of 251 cases, 110 had benign lesions and 97 had malignant lesions. Forty-four samples were considered suspicious of malignancy. On histopathology, benign lesions were present in 105 patients while malignant lesions were seen in 139 patients. In seven cases, results were inconclusive due to inadequate/superficial biopsy. STATISTICAL ANALYSIS: Statistical analysis revealed the overall sensitivity of upper gastrointestinal brush cytology as 83.45% and specificity 80.95%. The accuracy of brush cytology came out to be 82.37% in upper gastrointestinal tract. CONCLUSION: Brush cytology is a reliable, safe, inexpensive, and rapid method of diagnosing upper gastrointestinal lesions. Although endoscopic biopsies are established gold standard for diagnosing gastrointestinal malignancy, use of both biopsy and brushing together increases the diagnostic accuracy.