No abstract available.
Carcinoma

No abstract available.
Carcinoma*

No abstract available.
Carcinoma*

This paper documents the utility of ultrasound-guided tru-cut biopsy in the diagnosis and subsequent management of a case of occult breast carcinoma presenting with multiple distant metastases in the absence of a primary breast lesion. She was initially diagnosed as primary ovarian malignancy with metastatic disease and subsequently underwent transvaginal ultrasound-guided tru-cut biopsy of the right ovarian mass. Histologic and immunohistochemical studies were consistent with a metastatic adenocarcinoma of breast origin. The patient underwent chemotherapy for primary breast carcinoma and has responded well.
Carcinoma

Basosquamous carcinoma, a variant of basal cell carcinoma, is rather rare with an incidence of only 1 – 2% of cases. 1, 2 It has a predilection for the head and neck region (95.6%) with primary sites including the nasal, auricular and periocular area with the neck involved in only 1.1%.1 Unlike typical basal cell carcinoma, basosquamous carcinoma behaves more aggressively with a higher tendency for metastasis and recurrence. Its rarity translates to a lack of management guidelines. Because of its pattern of growth and relative aggressiveness, treatment plans must be well laid; recurrence resulting from poor planning may lead to a worse outcome and poorer prognosis.
Carcinoma

Hyalinizing clear cell carcinoma of the salivary gland is a rare neoplasm, accounting for only less than 1% of malignancies arising from the salivary gland. It is molecularly defined by the expression of the EWSR-ATF1 fusion oncogene. To date, there has been no previous studies published yet in the Philippines regarding the existence of this tumor. In this paper, we present a case of a 70-year-old elderly female who had a 10-year history of a gradually enlarging left lateral neck mass. Histopathologic examination showed a tumor arranged of cords, nests, and trabeculae of monomorphic round cells with abundant clear to lightly eosinophilic cytoplasm surrounded by thick hyalinized collagen bundles. Immunohistochemistry and molecular studies were done which revealed a positive p63 staining, negative SMA and S100, and an EWSR1 rearrangement in Fluorescence in situ hybridization (FISH), thus, confirming the diagnosis.
Carcinoma

Tumor suppressive effect of dehydroepiandrosterone (DHEA) on the experimentally induced hepatocellular carcinoma was investigated, especially focusing on glutatione transferase and transglutaminase with aptosis in the carcinogenesis. The chemical hepatocarcinogenic procedure of Solt-Farber method was used on Sprague-Dawley rats. Experimental groups were divided into AA group treated by the standard Solt-Farber regimen of diethylnitrosamine (DEN) and 2-acetamidofluorene (AAF) and AD group treated with DHEA simultaneously with AAF and the AAD group treated by DHEA after treatment with AAF. Each group was divided by time sequence further into four subgroups, GI (8wk), G2 (16wk), G3 (28wk), and G4 (36wk). For neoplastic lesion, the immuno histochemical study with anti GSTP antibody was carried out, while the activity and expression of TGase was compared at the same time. The results were summarized as follows; GST-P positive foci detected in AD groups were significantly more suppressed by DHEA treatment than AA groups (P<0.05). AD groups. AD group showed higher activities of TGase than AA groups (P<0.05), which was confirmed by Western and Northern blot analysis. But the number of apoptotic bodies was not correlated with activity and expression of TGase in the nodule. These results suggest that the suppressive effect of DHEA on the murine hepatocellular carcinogenesis might be operating on the promotion process of carcinogenesis rather than regression process of transformed hyperplastic nodules.
Carcinoma, Hepatocellular

No abstract available.
Carcinoma, Hepatocellular*

No abstract available.
Carcinoma, Hepatocellular*

It has been well known that liver cirrhosis, regardless of its etiology, is an important predisposing factor in hepatocarcinogenesis. However, the type of cirrhosis in hepatocellular carcinoma(HCC)-bearing liver varies not only by geographic areas but also with the cirteria applied for morphological classification of cirrhosis. To elucidate the relationship between the nodule size of HCC-bearing cirrhotic liver and clinicopathologic features, we measured cirrhotic nodule areas of 49 surgically resected HCC cases using image analyzer. The morphological type of cirrhosis was predominantly macronodular(49%), and followed by mixed(37%) and micronodular(14%). Seventy percent of the cases showed seropositivity for HBsAg. The average area of cirrhotic nodules was significantly larger in HBsAg-positive cases(mean: 6.14 mm2) than that of HBsAg-negative cases(mean: 2.5 mm2)(p<0.05), and their size was bigger in cases with grossly expansile pattern of HCC than those cases with infiltrative ones(p<0.05). Based on the above findings, we assume that seropositivity of HBsAg may influence on the regenerative activity of cirrhotic nodules and also subsequent increase of risk for further development of HCC. The presence of cirrhohsis and nodule size seem to be the important contributing factors to determine the growing patterns of HCC.
Carcinoma, Hepatocellular