From nine species of small mammals collected during the 12 month study period, nine species of fleas were recovered. Of the fleas, Ctenophthamus congeneroides congeneroides were obtained from seven host species, were recovered every month but January, comprised greater than 60% of the freas recovered each month except Noverber, December and January, accounted for more than 60% of all fleas and were collected from 15 of 17 localities visited. During November, December and January more than 50% of all fleas recovered were Stenoponia sidimi. Too, the greatest variety of flea species were recovered during November and December. Among the hosts, all nine flea species were recovered from Apodemus agrarius, six species were obtained from Microtus fortis and four from both Eothenomys regulus and Crocidura laciura. The highest rates of infested individuals, highest to lowest E. regulus, M.fortis, C.lasiura and A. agrarius. The highest general and specific indices were found in M.agrarius occurred in April and May and the highest monthly specific indices were noted for January, April and May. Ctenophthalmus congeneroides was the most abundant flea, had the widest host range, seasonal occurrence and the widest habitat distribution of the flea collected during this study. These fleas exhibited a decline in abundance in midwinter and an increase in numbers in the early spring. Among the small mammals, Apodemus agrairus yielded the greatest number of fleas species and was most heavily infested with during April and May.
parasitology-arthropoda-flea ; hemorrhagic fever ; epidemiology ; Ctenophthamus congeneroides congeneroides ; Stenoponia sidimi ; rat ; Apodemus agrarius ; Microtus fortis ; Eothenomys regulus ; Crocidura laciura ; Microtus agrarius ; Xenopsylla cheopsis ; Hystricopsylla microti ; Neopsylla bidentatiformis ; Rhadinopsylla insolita ; Peromiscopsylla hamifer cuneata ; Monopsylla anisus

No abstract available.

No abstract available.
Emergencies* ; Emergency Service, Hospital*

Differentiated thyroid carcinoma rarely shows gross angioinvasion with intraluminal tumor thrombus. Although there was no definite result of long-term survival, a vascular invasion or thrombus indicates poor prognosis. Total thyroidectomy with en block resection of involved vessels is known as the best surgical approach, and followed by postoperative radioiodine therapy. However, the effect of adjuvant external irradiation therapy remains in debate. We report a case of differentiated thyroid carcinoma with internal jugular vein tumor thrombus treated successfully by a complete surgical resection and postoperative radioiodine therapy.
Jugular Veins* ; Prognosis ; Thrombosis* ; Thyroid Gland* ; Thyroid Neoplasms* ; Thyroidectomy

The columnar cell variant of papillary thyroid carcinoma is an aggressive tumor associated with wide spread dissemination and a fatal outcome. We report two cases of columnar cell carcinoma occurring in two women aged 27, 66 years, respectively. The histologic feature of both cases showed focal papillary growth with columnar cell and nuclear stratification. Recognizing the columnar cell variant of the thyroid is important in light of the aggressive nature of the lesion and its apparent resistance to standard therapeutic interventions. These tumors occur over a wide age range, can metastasize widely, and are not usually responsive to radioactive iodine or chemotherapy. The presence or absence of extrathyroidal invasion represents the single most important parameter in predicting the behavior of these tumors. A large series of these tumors is needed to more fully appreciate the clinicopathologic spectrum of this aggressive thyroid neoplasm.
Drug Therapy ; Fatal Outcome ; Female ; Humans ; Iodine ; Thyroid Gland* ; Thyroid Neoplasms*

PURPOSE: Warthin-like papillary carcinomawas named owing to its close histologic resemblance to a tumor encountered in salivary gland, and this tumor is a variant of papillary thyroid carcinoma. Among the variants of papillary thyroid carcinoma, the tall cell variant and diffuse sclerosing variant have more aggressive behavior than the classic papillary carcinoma. But Warthin-like papillary carcinoma arises in a background of thyroiditis and it behaves in an indolent fashion. Since then, a few case have reported in Korea. We report here on the clinicopathologic features of five cases of warthin-like papillary carcinoma. METHODS: From Jan. 1996 to Feb. 2008, five patients who were diagnosed with Warthin-like papillary thyroid carcinoma at YUMC were retrospectively reviewed. RESULTS: All 5 patients whose pathologic features were warthin- likepapillary thyroid carcinoma were women (age range: 34~60 years). The tumor size ranged from 0.6 to 2.4 cm. 3 tumors were confined to the thyroid, but 2 tumors had invaded the strap muscles. 3 of the 5 tumors arose in a background of lymphocytic thyroditis. Central nodal metastases were identified in 2 cases. But no lateral nodal or distant metastasis had occurred. The mean duration of follow- up was 16.5 months (range: 5~50 months). 1 patient died because of lung cancer, and there was no recurrence for the other 4 cases during the follow-up period. CONCLUSION: Although the long-term follow-up data on patients with Warthin-like papillary carcinoma is not available, the clinicopathologic data does not show that Warthin-like papillary carcinoma is any more aggressive than the usual papillary carcinoma.

The fibromatosis (desmoid tumor) is histologically benign fibrous neoplasm arising from the musculoaponeurotic structures through out the body, but that shows locally aggressive growth. Common anatomic sites includes the limbs, trunk and mesentery. Fibromatoses arising in the neck have been reported rarely. If the tumors are occurred in the neck, complete resection is often difficult, because of its locally infiltrative nature. Therefore radiotherapy, chemotherapy and hormonal therapy are occasionally needed to reduce local recurrence. We report herein a case of fibromatosis arising in the left supraclavicular region with infiltration to surrounding tissues, which was successfully treated by complete surgical excision and postoperative adjuvant radiotherapy.
Drug Therapy ; Extremities ; Fibroma* ; Mesentery ; Neck* ; Radiotherapy ; Radiotherapy, Adjuvant ; Recurrence

Anaplastic thyroid carcinoma (ATC) is a rare disease that shows very aggressive behavior. Most ATCs arise from pre-existing thyroid carcinomas. However, anaplastic transformation occurring in metastatic cervical nodes is extremely rare. We report herein on 3 cases of anaplastic transformation of metastatic lateral cervical lymph nodes from primary papillary thyroid carcinoma (PTC), which happened long after the initial surgical treatment. All the patients died of disease within 4 months in spite of aggressive treatment for the lesions. Our experience supports that appropriate lymph node dissection is mandatory at the time of initial surgery even for differentiated thyroid carcinomas.
Humans ; Lymph Node Excision ; Lymph Nodes* ; Rare Diseases ; Thyroid Carcinoma, Anaplastic ; Thyroid Gland* ; Thyroid Neoplasms*

The differential diagnosis of mediastinal lymph node enlargement is mandatory, since the diagnosis of mediastinal lymph node enlargement covers a broad spectrum of diseases including inflammatory reactions, infections, and cancer metastases. We describe here a 51-year-old woman with anthracosis in mediastinal lymph node, mimicking metastatic carcinoma from the thyroid gland.
Anthracosis ; Carcinoma ; Diagnosis, Differential ; Female ; Humans ; Lymph Nodes ; Mediastinum ; Middle Aged ; Neoplasm Metastasis ; Thyroid Gland ; Thyroid Neoplasms

PURPOSE: Primary thyroid mucosa-associated lymphoid tissue (MALT) lymphoma is a very rare subgroup of thyroid lymphoma, accounting for about 6 to 28% of all primary thyroid lymphomas. The purpose of this study was to evaluate its clinicopathological features and treatment outcomes. METHODS: We identified seven patients with thyroid MALT lymphoma who were treated between January 1997 and December 2007, and reviewed their clinicopathological features and follow-up outcomes. RESULTS: There were five female and two male patients, and their mean age was 73 years. All patients presented with palpable neck mass. Two patients had hoarseness and dyspnea. All patients had a history of Hashimoto's thyroiditis with a mean of 175 months. Malignant lymphoma was suspected in only three patients using core needle biopsy. Four patients underwent thyroidectomy in the absence of preoperative pathologic confirmation, and histologic diagnosis was obtained after surgery. As initial treatment, complete surgical resection was performed in five patients, radiotherapy in one, and a combination of chemotherapy and radiotherapy in one. Six patients were alive for the mean follow-up period of 66 months and one patient died of unrelated causes. There were neither recurrences nor disease-specific mortalities. CONCLUSION: When primary thyroid MALT lymphoma occurs in the thyroid or is confined to the neck, it responds well to local treatment such as surgical resection and external beam radiation therapy.
Accounting ; Biopsy, Large-Core Needle ; Dyspnea ; Female ; Follow-Up Studies ; Hoarseness ; Humans ; Lymphoid Tissue ; Lymphoma ; Lymphoma, B-Cell, Marginal Zone ; Male ; Neck ; Recurrence ; Thyroid Gland ; Thyroidectomy ; Thyroiditis