ABSTRACT
Lipomas is the commonest tumour of subcutaneous tissue. It may occur anywhere in the body, but are very infrequent in the head and neck. Clinically they confuse with other soft tissue masses, especially if the present in the head and neck region. Malignancy has to be ruled out if the large neck swelling with increased rapid recent growth. . Improved diagnostic imaging technology (such as CT or MRI) has been very beneficial for the knowledge of extension and surgical plan of the tumour mass.The best treatment modality so far has been surgical excision. In this present study, a 45-year-old woman who presented with a enlarged submental mass which was present since 2 months but has started growing rapidly since 15 days is described. Surgical excision under bilateral cervical block was performed. A 7cm ×4cm mass was successfully removed. The surgery produced no functional impairment and good cosmetic results. Review of literature is also included.
ABSTRACT
Histopathological changes in vital tissues like gills, liver and kidney in the fish Labeo rohita exposed for 8 days to sublethal (5.2 mgl-1) and lethal concentration (25.09 mgl-1) of phenol were studied. The observed histopathological changes in the gills were epithelial hyperplasia with lamellar fusion, epithelial hypertrophy, edema, general necrosis, increased mucous production and degeneration of primary and secondary gill lamellae at sublethal (5.2 mg l-1) and degenerated primary and secondary gill lamellae, lamellar fusion and lamellar disorganization at lethal (25.09 mg l-1) concentration. In the liver, the changes include as: formation of number of vacuoles, enlargement of nuclei of some cells, enlarged sinusoids with numerous blood cells and atrophic areas at sublethal (5.2 mg l-1) concentration and nuclear and cytoplasmic degeneration and melanomacrophages aggregates at lethal (25.09 mg l-1) concentration. In case of kidney, the changes were: degeneration of proximal and distal convoluted tubule, vacuolation of renal interstitial tissue and deformation of the nuclear membrane of some cells at sublethal (5.2 mg l-1) and occlusion of tubular lumen, cloudy swelling degeneration and hyaline droplets degeneration at lethal (25.09 mg l-1) concentration.