BACKGROUND The close proximity of the orbit and the paranasal sinuses, both of which share more than two-thirds of common walls makes the orbit too susceptible to infections spreading from the paranasal sinuses. In any case of proptosis indicating an orbital tumour, extension from a PNS lesion should be ruled out. MATERIALS AND METHODS The study was a retrospective descriptive study. Data taken from the patient's medical record during the period of July 2014-June 2017. A total of 32 cases of proptosis were studied all of which were secondary to paranasal sinus pathology. These cases were subject to routine clinical examination and investigations including CT and MRI scan. Histopathological diagnosis was obtained by biopsy in appropriate cases.

BACKGROUND The technique of imprint cytology is a simple, cost effective, rapid technique of intraoperative diagnosis of tumours. It plays a significant role in the rapid diagnosis of the lesions in centres with less developed infrastructure. Objectives of this study were to analyse the accuracy of imprint cytology and thereby to evaluate its diagnostic utility. MATERIALS AND METHODS The prospective study was carried out in a tertiary care hospital. It included 12 cases of ocular surface squamous neoplasia. The cytodiagnosis was correlated with histopathological (HP) diagnosis to evaluate the accuracy of imprint cytology. RESULTS Maximum lesions were of invasive squamous cell carcinoma (50%) followed by intraepithelial neoplasms including dysplasias (33.3%) and carcinoma in situ (16.6%). Overall accuracy of detecting type of lesion was 83.33%. Total discordance with HP diagnosis was 16.6%. CONCLUSION Intraoperative diagnosis using imprint cytology provides a rapid and efficient means of pathological assessment which in experienced hand, is capable of obtaining a high degree of accuracy.