Background: Eyelid lesions are commonly encountered in histopathology practice and encompass a wide variety of non-neoplastic and neoplastic lesions. Here we report the histopathological features of eyelid lesions in patients presenting to a tertiary care center in Kerala, South India.Methods: In this retrospective study, a total of 414 eyelid lesions were identified over a period of 10 years (January 2006 - December 2015). In each case, details including age, gender and final histopathological diagnosis were recorded from histopathology registers.Results: Non-neoplastic lesions (52.4%) were more common than neoplastic lesions (47.6%). In the neoplastic lesions, benign tumors outnumbered (37.7%) malignant tumors (9.9%). Age of patients ranged from 1 to 90 years with a mean age of 43.4 years. M: F ratio was 1:1.3. The most common non-neoplastic lesion was epidermal cyst (14.3%) followed by parasitic granuloma (9.2%), chalazion and dermoid cyst (5.6% each). Nevus was the commonest benign eyelid tumor (13.7%) followed by squamous papilloma (9.2%), seborrhoeic keratosis and capillary hemangioma (3.9% each). Sebaceous carcinoma was the most frequent malignant tumor (2.4%) followed by squamous cell carcinoma (2.2%) and basal cell carcinoma (1.5%). Uncommon lesions encountered were actinomycosis, tuberculous granuloma, amyloid deposit, calcinosis cutis, molluscum, angiolymphoid hyperplasia with eosinophilia, xanthelasma, granular cell tumor, benign fibrous histiocytoma, mucinous eccrine adenocarcinoma etc.Conclusions: Eyelid lesions were commoner in females and in 5th and 6th decades. Epidermal cyst and nevus were the commonest benign lesions and sebaceous carcinoma was the most common malignant tumor. The results are comparable with available data from South India.

Background: Salivary gland tumors constitute a highly heterogeneous histopathologic group. There are few epidemiological studies of large series of benign and malignant epithelial tumors of major salivary glands in South India.Methods: This is a retrospective study in a tertiary care centre in Kerala, South India. A total of 180 epithelial neoplasms of major salivary gland were studied over a 5 year period. In each case age, sex, anatomical location and histopathological diagnosis were recorded.Results: Patients with benign and malignant tumors presented with a mean age of 52.3 and 55.9 years respectively. The frequency of benign tumors was 80.6% (n = 145) and of malignant tumors was 19.4% (n = 35). There was a higher prevalence of tumors in males 60.6% (n = 109) than in females 39.4% (n = 71). 91.9% (n = 164) of the tumors were localized in the parotid gland, 8.3% (n = 15) in the submandibular gland and 0.6% (n = 1) in the sublingual gland. The most common benign tumors were Pleomorphic adenoma (48.9%, n = 88) and Warthin’s tumor (28.9%, n = 52). Among malignant tumors, Mucoepidermoid carcinoma was the most common (9.5%, n = 17) followed by Carcinoma ex pleomorphic adenoma (2.8%, n = 5) and adenoid cystic carcinoma (2.2%, n = 4).Conclusions: Parotid gland was the most common site of both benign and malignant tumours. Plemorphic adenoma was the most common benign tumor and mucoepidermoid carcinoma was the most common malignant tumor.

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Background and Objective Serotonin levels are increased in acute appendicitis. We investigated the possible source of this increase. The aim of this study was to compare the distribution and density of epithelial and nonepithelial enterochromaffin (EC) cells as well as numbers of degranulated and nondegranulated mast cells in different layers of normal appendices and acute appendicitis. Methods Sections from 15 cases of acute appendicitis and 10 cases where the appendix was morphologically normal were stained with Hematoxylin & Eosin, Toluidine blue, and immunohistochemically for chromogranin and CD-117. EC cells stained by chromogranin were counted per crypt and extraepithelial EC cells counted and expressed as cells per unit area (mm2). Mast cells stained by Toluidine blue and CD-117 were counted in lamina propria, submucosa, and muscle layers. The difference between Toluidine blue and CD117 stained mast cells was taken to be an estimate of degranulated cells. The cell counts were expressed per unit area (mm2) as well as per cross-sectional area of the appendix. Results There was no statistically significant difference in epithelial and extraepithelial EC cells between acute appendicitis and normal appendix. Estimated mast cell degranulation as indicated by mast cell counts per cross-sectional area is greatly increased in acute appendicitis when compared with normal. Conclusion Degranulated mast cells rather than EC cells may be the main source of raised serotonin in acute appendicitis.

BACKGROUND Nephrectomy is the standard surgical treatment of neoplastic and non-neoplastic lesions in the kidney and provides more insight into the detailed histopathology of renal lesions. We wanted to identify the age groups, gender distribution and different histopathological types and subtypes of non-neoplastic and neoplastic lesions in nephrectomy specimens over a period of ten years. METHODS A retrospective analysis was done over a period of ten years (January 2006 to December 2015). All nephrectomy specimens received in the Department of Pathology, Government Medical College, Kottayam were recorded from histopathology registers and analysed with regard to age, gender and histopathological types. RESULTS A total of 532 lesions was encountered in our analysis. Males (61.8 %) were affected more than females (38.2 %). Lesions were more on the left side (50.8 %) than right side (49.2 %). Non-neoplastic lesions (53 %) outnumbered neoplastic lesions (47 %). Inflammatory and obstructive causes constituted the majority (43.8 %) in non-neoplastic lesions and renal cell carcinoma was the commonest neoplasm (71.2 %). CONCLUSIONS There is a wide age distribution of renal diseases in the present study. Inflammatory and obstructive conditions constituted the most common indication for nephrectomy, followed by malignant tumours. KEYWORDS Renal Cell Carcinoma, Nephrectomy, Pyelonephritis, Simple Renal Cyst, Wilms Tumour