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A Nonomura

Publications and source records attributed to A Nonomura.

At least 19 recordsLinked to original sources
PubMed1992

Alpha-fetoprotein production by hepatocellular carcinoma is prognostic of poor patient survival.

Immunohistochemistry using the avidin-biotin-peroxidase complex method was performed to study the production of alpha-fetoprotein (AFP) in hepatocellular carcinoma (HCC) tissue specimens which were obtained surgically. The relationship between staining for AFP and serum AFP levels or pathological findings was examined. The prognosis of the patients with HCC who underwent curative hepatic resections was studied with respect to the staining for AFP in their tumors. The mean serum AFP level in patients with positive AFP staining was significantly higher than in those with negative AFP staining. No significant relationship was found between AFP positivity and tumor size, tumor encapsulation, degree of vascular invasion, or the histological differentiation grade of the tumor. The patients with AFP-positive carcinomas had a poorer prognosis than did those with AFP-negative carcinomas (5-year survival rate of AFP-positive and negative groups were 26.7% and 56.5%, respectively.

Carcinoma, Hepatocellular↗
PubMed1992

Hamartomatous lesion of the liver in an adult patient with biliary dilatations: a variant of inflammatory pseudotumor of the liver?

An unusual tumor-like lesion (1.2 cm in diameter) in the left lobe of the liver in a 67-year-old woman with dilatations of the common and hepatic bile ducts is reported. Histologically, this lesion was composed of hyalinized connective tissue, several dilated bile ducts with periductal fibrosis and biliary epithelial proliferation, lymphocytic and plasmacytic infiltrates, stenotic venous and arterial vasculature, and nerve bundles. Although these elements were found in a disordered pattern and appeared to have a hamartomatous etiology, each of these pathologic components seemed inflammatory in character. Besides, clinical data disclosed that this lesion was acquired in origin. Although such a hepatic tumor-like lesions has not previously been reported to the best of our knowledge, this tumorous lesion shared features of hepatobiliary lesions reported in intrahepatic calculi, a form of chronic cholangitis. It seems likely that this tumor-like lesion might have arisen from localized chronic cholangitis, possibly related to the dilatations of the common and hepatic ducts, and we suggest that this lesion be named "fibroductal variant" of inflammatory pseudotumor of the liver.

Aged↗
PubMed1992

Clinicopathologic study of alcohol-like liver disease in non-alcoholics; non-alcoholic steatohepatitis and fibrosis.

Alcohol-like liver injury (ALLI) in non-alcoholics has not been elucidated in Japan. The present study attempted to characterize the clinicopathologic features of ALLI in routine liver biopsies. ALLI was found in 1% of 561 biopsy cases obtained from 1988 to May, 1991 at Kanazawa University Hospital. Laboratory data characteristically showed only a mild to moderate degree of dysfunction, and none of the cases exhibited jaundice. Hepatic histology showed a mild to moderate degree of perivenular, pericellular and/or portal stellate fibrosis with a varying degree of fatty change and inflammatory cell infiltration. Portal stellate fibrosis with a varying degree of cell infiltration was more severe than the centrilobular or pericellular fibrosis in all cases. Intralobular inflammatory cell infiltration was associated with spotty or single hepatocyte necrosis, but extensive hepatocyte necrosis was not observed. Neutrophil infiltration was absent or minimal, and lymphocytes predominated in all cases. Mallory bodies were rare and were found in a few hepatocytes of only one of the 7 cases. The above histologic findings in ALLI were very similar to those seen in liver disease in Japanese alcoholics, and were somewhat different from ALLI reported in Western countries. In cases in which hepatic fibrosis, characterized by pericellular, perivenular or portal stellate fibrosis dominated without apparent hepatic necrosis and inflammation, the term "non-alcoholic steatofibrosis" is more suitable to depict its liver histology, being very similar to the alcoholic fibrosis frequently seen in Japanese alcoholics.

Adult↗
PubMed1992

Chronic thyroiditis: thyroid function and histologic correlations in 601 cases.

Six hundred one patients with histologically proven "chronic thyroiditis" were assessed for the correlation of thyroid function to histologic findings. The histology of chronic thyroiditis was classified into four groups (oxyphilic, mixed, focal, and hyperplastic), and the thyroid function of patients was divided into hyperthyroid, euthyroid, latent hypothyroid, and overt hypothyroid, based on the laboratory data of serum triiodothyronine (T3), thyroxine (T4), and thyrotropin (TSH) levels, as well as thyrotropin-releasing hormone (TRH) tests. In the oxyphilic group (137 cases), 116 (85%) of the patients were classified as hypothyroid: 52 (38%) as latent hypothyroid and 64 (47%) as overt hypothyroid. In the mixed group (161 cases), the thyroid function of the patients varied. Thirty-seven (23%) of the patients were classified as hyperthyroid, 61 (39%) as euthyroid, 54 (33%) as latent hypothyroid, and nine (5%) as overt hypothyroid. In this group thyroid function was intimately related to the ratio of replacement by hyperplastic-changed follicles and oxyphilic-changed follicles. In the focal group (149 cases), 123 (83%) of the patients were classified as euthyroid, while 22 (14%) were classified as latent hypothyroid. The frequency of latent hypothyroid patients increased in parallel with the severity of cell infiltration. In the hyperplastic group (154 cases), 130 (85%) of the patients were classified as hyperthyroid. In this series 19 patients under 10 years of age were included, and no difference in the distribution of histologic varieties was observed between juvenile and adult patients. Thyroid needle biopsy is a useful and safe tool, not only for the histologic diagnosis of chronic thyroiditis, but also for the evaluation of thyroid function and the identification of causes for hyperthyroidism or hypothyroidism.

Adult↗
PubMed1992

Wide resection with latissimus dorsi muscle transposition in breast conserving surgery.

In this study we evaluated whether the immediate transposition of the latissimus dorsi muscle (LDM) improves breast appearance and patient satisfaction after quadrantectomy. Twenty-three patients (transposed group) had the transposition of LDM immediately after quadrantectomy, but eight patients (non-transposed group) had quadrantectomy alone. For evaluation, breast size was classified as small (A or B cup) and large (C or D cup). Consequently, the cosmetic result was evaluated as excellent in 73% of the patients with transposed small breasts, but in only 25% of the patients with non-transposed small breasts and by none of the patients with transposed large breasts. On the other hand, all patients with transposed small breasts reported that they are satisfied with their operation, as opposed to 88% of the patients with transposed large breasts and 63% of the patients with transposed large breasts and 63% of the patients with non-transposed small breasts. It was concluded therefore, that the transposition of LDM is useful in correcting post-quadrantectomy breast deformity, especially in patients with small breasts.

Adult↗
PubMed1992

Carcinoma of the thyroid at a young age--a review of 23 patients.

Twenty-three children and adolescents with thyroid carcinoma who were 20 years old or younger at the time of initial treatment were followed for a mean time of 9.5 years. Of the tumours, 21 were papillary and two follicular carcinomas. The majority (91%) of the 23 cases showed extra-thyroidal extension of the tumour. An association with chronic thyroiditis was observed in 30% of the cases. There was no history of irradiation of the head and neck in any patients. Relapse occurred in eight patients, lung metastases in two and local recurrences in six; one patient died from lung metastases 3 months after initial treatment. Male patients, advanced stage of tumour, less differentiated histological features and DNA aneuploidy were associated with a higher frequency of relapse. The prognosis of thyroid carcinomas in children and adolescents is not so good as is generally believed.

Adenocarcinoma↗
PubMed1992

Papillary thyroid carcinoma in Kanazawa, Japan: prognostic significance of histological subtypes.

A retrospective analysis of 183 papillary thyroid carcinomas was made in order to assess the prognostic factors related to survival. The following factors were found to adversely affect the prognosis: trabecular subtype of papillary carcinoma, the extent of the primary tumour, regional lymph node involvement, the presence of distant metastases, old age, male sex and the extent of the neck dissection. The presence of the follicular variant of papillary carcinoma and the extent of the thyroidectomy did not influence the prognosis. The trabecular subtype of papillary carcinoma is characterized by a trabecular or solid arrangement of follicular cells with nuclei of ground-glass appearance. Univariate and multivariate analysis indicated that patients with this type of thyroid tumour had a poorer prognosis than those with the well-differentiated or follicular variants of papillary carcinoma. In our opinion the trabecular subtype of papillary carcinoma should be included as a separate entity in the WHO classification of thyroid tumours.

Adolescent↗
PubMed1992

Histologic changes in Graves' thyroid gland after 131I therapy for hyperthyroidism.

The effect of 131I therapy was examined in 13 thyroid glands affected by Graves' disease 3 to 29 years after irradiation for hyperthyroidism. All of the patients had clinically palpable thyroid nodules. Two patients were in a latent hypothyroid, 6 in a euthyroid and 5 in a hyperthyroid state. The microscopic changes in the thyroids showed a pattern of multiple adenomatous nodules with cystic changes, marked oxyphilic cell changes with nuclear atypism and various degrees of chronic thyroiditis. Immunohistochemical staining for TG and T4 was negative to mildly positive in these oxyphilic cells and entirely negative for EGF and CEA. The DNA ploidy pattern was diploid pattern in 6 cases. One papillary-type microcarcinoma occurred, but there was no evidence of a relationship between the tumor and the irradiation. The pathologic findings in Graves' thyroid gland after 131I therapy are not specific, but pathologists should differentiate this lesion from adenomatous goiter, which occurs with no apparent cause, or from thyroid carcinoma because of the marked nuclear atypism of this lesion.

Adult↗
PubMed1992

Hepatocellular carcinoma: correlation of MR imaging and histopathologic findings.

Seventy-two histologically proved nodular hepatocellular carcinomas (HCCs) were studied with magnetic resonance (MR) imaging at 1.5 T. Capsules were present in 56 of the 72 tumors. Thirty-seven capsules were depicted on T1-weighted spin-echo MR images, and 16 were depicted on T2-weighted MR images. Visualization was dependent on thickness and structure of the capsules. Of the 72 tumors, 36 had a mosaic pattern. A mosaic pattern was visualized in 12 of the 36 tumors on T1-weighted images and in 27 of the 36 tumors on T2-weighted images. Six tumors were determined to be histologic grade 1, and all were hyperintense on T1-weighted images, regardless of whether intracellular fat deposits were present. Four of the six grade 1 tumors were isointense on T2-weighted images. In contrast, grades 2 and 3 tumors had various signal intensities on T1-weighted images and most were hyperintense on T2-weighted images. Twenty-one of 32 tumors (66%) with focal areas of increased signal intensity on T2-weighted images had intratumoral dilated sinusoids at histologic examination.

Adolescent↗
PubMed1992

Primary extramedullary plasmacytoma of the lung.

A case with primary plasmacytoma of the lung is described. The patient, a 55-year-old Japanese female, who simultaneously had a pulmonary plasmacytoma and bladder carcinoma. The bladder tumor was treated with transurethral resection. Pathologically, the bladder tumor was a non-invasive, papillary transitional cell carcinoma, grade II. The lung tumor was located in the right upper lobe and upper lobectomy was performed. The tumor measured 2.8 x 2.7 x 2.0 cm and had a white-yellowish cut surface. Histologic, electron microscopic and immunohistochemical examinations of the lung tumor revealed monoclonal proliferation of plasma cells (IgA, lambda light chain). There was no evidence of multiple myeloma.

Female↗
PubMed1992

The cellular infiltrate in the liver of patients with fulminant hepatitis: analysis of paraffin-embedded tissue sections.

Intrahepatic infiltrate from 18 patients who died of fulminant hepatitis, was analyzed by an immunohistochemical method using formalin-fixed, paraffin-embedded liver sections and monoclonal antibodies. Inflammatory cells were characteristically located in the portal and periportal areas adjoining resting hepatocytes, but were infrequently found in the perivenular areas where hemorrhagic hepatocyte necrosis predominated. In the inflammatory infiltrate, T cells were the most predominant cell type, composing about two-thirds of the total hepatic infiltrate, followed by lysozyme-positive macrophages which composed about one-third of the total hepatic infiltrate, irrespective of the etiology of the fulminant hepatitis. On the other hand, B cells made up less than 2% in all cases, and plasma cells were also few, less than 2% in 12 of 18 cases. Furthermore, an enhanced display of beta 2-microglobulin on hepatocyte membranes was demonstrated in all cases with remaining hepatocytes, indicating an increased expression of class I MHC antigens on these cells. These results suggest that T cells may play an important role in the pathogenesis of the portal and periportal lesions of fulminant hepatitis, probably with a help of MHC class I antigens on hepatocytes, while hemorrhagic necrosis of hepatocytes around the central veins may be caused by a different mechanism, most likely a circulatory disturbance secondary to cell-mediated immune reactions in the periportal areas.

Acute Disease↗
PubMed1992

Seven patients with plasma cell granuloma (inflammatory pseudotumor) of the lung, including two with intrabronchial growth: an immunohistochemical and electron microscopic study.

Seven patients (mean age, 50.7 +/- 20.4 years; range 21-77) with plasma cell granuloma (PCG) of the lung are reported. Cough and sputum were the most common presenting symptoms, followed by fever. Elevated erythrocyte sedimentation rate and serum C-reactive protein levels were found in all patients tested. Radiologically, five cases presented as solitary, well-circumscribed masses and two as ill-defined, pneumonia-like densities. One showed focal calcification. No predilection of occurrence was observed in either lobe of the lung. Histologically, the lesions consisted of a proliferation of mature plasma cells and reticulo-endothelial cells supported by a stroma of granulation tissue, with varying degrees of myxoid change or collagenization. Angioinvasion within the lesion was observed in 4 of the 7 cases. Immunohistochemical staining revealed the IgG-predominant polyclonal nature of the plasma cells, indicating a reactive inflammatory process rather than a neoplastic one. Electron microscopy confirmed the benign nature of the plasma cells with fibroblast and myofibroblast proliferation admixed with that of other inflammatory cells.

Adult↗
PubMed1992

Effects of high and low dietary fat and indomethacin on tumour growth, hormone receptor status and growth factor expression in DMBA-induced rat breast cancer.

The effects of high and low dietary fat (20% vs. 0.5% corn oil), and of the prostaglandin synthetase inhibitor indomethacin (0.005% w/w), on tumour incidence, tumour growth, hormone-receptor status and growth-factor expression were examined in dimethylbenzanthracene (DMBA)-induced rat breast cancer. The high dietary-fat group showed a significantly higher tumour incidence, larger tumour size and larger number of bromodeoxyuridine(BrdU)-positive cells of tumours as compared with those in the low dietary-fat group. Indomethacin reduced tumour incidence significantly, but conversely increased the tumour size and the number of BrdU-positive cells in both the high and the low dietary-fat groups. No significant difference was noted in the hormone-receptor status of the tumours. Growth factors (TGF-alpha and IGF-II) were somewhat highly expressed in the high dietary-fat group as compared with the low dietary-fat group, but indomethacin rather reduced the growth-factor expression. It is concluded that high dietary fat stimulates tumour incidence and tumour proliferation, while indomethacin has dual effects: a stimulating effect on tumour proliferation, but an inhibiting effect on tumour incidence. It is also suggested that hormone-receptor status and growth-factor expression do not play an important role in their stimulating effects on tumour proliferation.

9,10-Dimethyl-1,2-benzanthracene↗
PubMed1992

[Combined resection of the aorta in a T4 lung cancer under nonheparinized temporary bypass using Anthron tube].

A 63-year-old male had squamous cell carcinoma in the left upper lobe. CT scan suggested the invasion of the tumor into the vertebral body and the descending aorta. Left pneumonectomy and combined aortic resection under the temporary bypass using Anthron tube was performed. The bypass using Anthron tube provides us no systemic heparinization and the procedure is easy. So the danger of massive bleeding during and after the operation can be decreased and the operative time can also be shortened. This procedure may be a great help for carrying out the operation with combined aortic resection more safely and speedily.

Aorta↗
PubMed1991

Estrogen and estrogen receptors in thyroid carcinomas.

Thyroid tissues, composed of normal thyroid (10 cases), Graves' thyroid (4), and papillary carcinoma (10), were measured for the presence of receptors for estrogen (ER) using an enzyme-immunoassay method. The mean value of ER in papillary carcinoma tissues (4.0 +/- 3.6 fmol/mg protein) was higher than that in normal thyroid tissues (0.8 +/- 0.4 fmol/mg protein) or that in Graves' thyroids (2.6 +/- 0.9 fmol/mg protein). In 10 papillary carcinomas, 3 were from male patients and 7 were from females. The mean value of ER in the tumors from male patients (7.2 +/- 5.1 fmol/mg protein) was higher than that from female patients (2.6 +/- 1.7 fmol/mg protein). Another set of 100 thyroid tissues from normal (20 cases), Graves' disease (10), follicular adenoma (8), and papillary carcinoma (62) was also examined for the presence of estradiol (E2) using an immunohistochemical method on formalin-fixed paraffin-embedded sections. E2-positive tissues were found in 4 (40%) of 10 Graves' thyroids, 4 (50%) of 8 adenomas, and 47 (76%) of 62 papillary carcinomas. In 62 papillary carcinomas, E2-positive tissues were found in 37 (73%) of 51 female patients and 10 (91%) of 11 male patients. In relation to relapse of the carcinomas, E2-positive carcinomas were found in 10 (71%) of 14 patients with relapse of the disease and in 14 (54%) of 26 patients with no relapse (the difference was not significant). The findings indicate that thyroid carcinomas may be estrogen-dependent, but no definite conclusions could be drawn between the biological behavior of the tumors and the E2-positivity.

Adenoma↗
PubMed1991

Early hilar lung cancer: its clinical aspect.

Early hilar lung cancers are rare, but are curable if they are properly diagnosed and treated. In the past 14 years, we have treated 27 patients with early hilar cancers that fulfilled the criteria proposed by the Japanese Lung Cancer Society (JLCS). Eighteen patients presented with symptoms and 9 were detected by the mass screening examination of sputum cytology. All lesions in both groups were finally diagnosed by bronchoscopy. Twenty patients (74%) had positive sputum cytology, whereas only 7 (26%) had positive chest X-ray findings. All the patients underwent surgery, and bronchoplasty was the most frequent operative procedure. The 5-year survival rate was 100%, and the 10-year survival rate was 91.7%, as one patient died of a second primary lung cancer in the 6th postoperative year. In conclusion, the definition of early hilar lung cancer proposed by the JLCS is thought to be reasonable, and early hilar lung cancer is a curable disease, if it is properly diagnosed and treated.

Bronchoscopy↗