ABSTRACT
Hepatocellular carcinoma (HCC) is one of the most common malignancies worldwide that is etiologically linked to a previous hepatitis B infection. We describe two cases of HCC metastasis to the oral cavity in 60- and 67-year-old male patients. The first case was a diffuse, hard swelling in the left body of the mandible. Histopathologic and immunohistochemical analysis was done, and a positive for CK7, CK19, HEPPAR and TTF and a negative for NAPSIN were found to be diagnostic of metastatic HCC. Subsequent examination of the serum alfa- fetoprotein (AFP) level showed a high value of 450 ng/ml, confirmatory of HCC. The second case was a pedunculated, reddish, mobile soft tissue growth on the retromolar region. Its macroscopic and histopathologic features themselves were confirmatory of HCC, and the elicited history was corroborant of metastasis.
ABSTRACT
Ameloblastic fibroma (AF) is a rare benign odontogenic tumour first described by Kruse in 1891. Although reported in a wide age range, most of the cases are seen in the first two decades of life with majority of cases being diagnosed before the age of 20 years. There are reported variations in the histopathological presentation of ameloblastic fibroma. In this case report, we present a case of ameloblastic fibroma with extensive dentinoid formation involving the mandible in an 8-year-old male patient which clinically presented as an aggressive lesion.
ABSTRACT
An antimicrobial packaging material was developed by uniformly embedding 1, 3 and 5% chitosan (w/w) in low density polyethylene matrix using maleic anhydride grafted LDPE as a compatible agent. The materials were mixed by compounding and blown into monolayer films via blown film extrusion. The developed films showed good barrier properties against oxygen. Characterization of the composite films with Fourier transform infrared spectroscopy revealed that chitosan and LDPE interacted well with each other. Overall migration showed better release of chitosan adduct from the LDPE matrix which enhanced the antibacterial properties of the films. The interaction between the LDPE/CS and maleic anhydride grafted LDPE had a decreasing effect on the tensile strength and heat sealing properties. Investigation on antimicrobial properties of LDPE/CS films showed 85-100% inhibition of Escherichia coli. Efficacy of LDPE/CS films was evaluated by using them as packaging material for chilled storage of Tilapia (Oreochromis mossambicus). Analysis of storage quality indices (peroxide value, free fatty acid, total volatile base nitrogen and aerobic plate count) revealed good antibacterial property and extension of shelf life of Tilapia in the chitosan incorporated novel composite films compared to virgin LDPE film.
