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Biomedical subjects

C Ashida

Publications and source records attributed to C Ashida.

16 recordsLinked to original sources
PubMed1999

A case of ectopic thyroid in lateral neck associated with Graves' disease.

Thyroid follicles in the lateral position of the neck are usually thought to represent the metastasis of thyroid carcinoma. Here we present a case of a 28-year-old woman with accessory ectopic thyroid associated with Graves' disease. Despite a history of Graves' disease poorly controlled with large dose propylthiouracil she was found to be pregnant and artificial abortion was planned. Thyroid scintigraphy was carried out, which indicated an uptake into the region above the left lobe as well as into both lobes of the thyroid gland. In order to control hyperthyroidism and to exclude the possibility of metastasis, total thyroidectomy with tumor resection was performed before the artificial abortion. Pathological examinations of the thyroid gland indicated findings compatible with Graves' disease. The lateral neck mass was revealed to be composed of nonneoplastic thyroid tissue, showing similar histological findings to those of the goiter, which were consistent with Graves' disease. Taken together with several previous reports, it appears that there are some cases with lateral ectopic thyroid tissue, whose pathogenetic mechanism remains to be elucidated.

Abortion, Induced↗
PubMed1990

[A case of myxadenoma of the renal capsule].

We reported the case of a 69-year-old man who had resection of a myxadenoma of the renal capsule. The tumor measured 28 x 24 x 6.5 cm and weighed 3,000 grams including the left kidney. CT was useful in suggesting the diagnosis of the renal capsular tumor.

Adenoma↗
PubMed1989

[A case of giant leiomyosarcoma that grew exogastrically in a year and four months].

Presented is a 69-year-old female who had gigantic leiomyosarcoma showing a pedunculated and exogastric growth. Though the patient had been diagnosed as having a gastric submucosal tumor (SMT) on being given an upper GI series and an endoscopical examination, she did not enter hospital until a year and 4 months later. On admission, a large SMT was suspected after an upper GI series and an endoscopic examination. Computed tomography (CT), ultrasonography (US), and angiography revealed a gastric SMT that had grown exogastrically. Subsequently, this tumor was resected with the gastric wall. Histologically, tumor was determined as being a leiomyosarcoma. CT and US were found useful in demonstrating the SMT with its exogastric growth.

Aged↗
PubMed1983

Active specific immunotherapy using the immune reaction of a low-dose irradiated tumor tissue.

Active specific immunotherapy using the immune reaction of a low-dose irradiated tumor tissue was studied on the transplanted MM46 tumor of female C3H/He mice after radiotherapy. MM46 tumor cells were inoculated into the right hind paws of mice. On the 5th day, irradiation with the dose of 3000 rad was performed. On the 11th day, tumor cells and mononuclear cells, which were separated from the low-dose irradiated tumor tissue (2000 rad on the fifth day), were injected into the left hind paws of the tumor-bearing mice. Effectiveness of this active specific immunotherapy against tumor was evaluated by the regression of tumor and survival rate of mice. Tumor was markedly regressed and survival rate was significantly increased by the active specific immunotherapy.

Adenocarcinoma↗
PubMedDate not supplied

CT demonstration of prominent right hilar soft tissue collections.

Three cases of normal soft tissue collections of the right hilum which could be confused with thrombus of the right pulmonary artery or adenopathy are demonstrated. These abnormalities are due to normal accumulations of hilar fat and lymph nodes. Their typical appearance allows easy recognition.

Aged↗
PubMedDate not supplied

Computed tomography of hepatic cavernous hemangioma.

Fifty hepatic hemangiomas in 38 patients were evaluated by CT using sequential scanning following bolus injection. Lesions were assessed for the following CT features: (a) low density lesion on unenhanced scan; (b) early peripheral contrast enhancement; (c) progressive opacification from the periphery to the center; (d) a delay of at least 3 min before total opacification; and (e) eventual isodense appearance with or without unopacified cleft. The criteria for diagnosis of hepatic hemangioma were (d) and (e) plus at least two of the remaining three features. Forty-eight lesions were identified by CT; 38 displayed all five features, five lesions were missing one feature, and five lesions did not meet the criteria for diagnosis. Larger lesions required a significantly longer period to opacify (p less than 0.05). The positive predictive value of CT in the diagnosis of hemangioma was 100%.

Adult↗
PubMedDate not supplied

Evidence-based practice.

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Evidence-Based Medicine↗