Pulmonary adenocarcinoma of fetal type is a very uncommon tumor of the lung which simulates an early stage of lung differentiation. This is a primitive appearing epithelial tumor similar to the epithelial component of pulmonary blastoma but lacking the sarcomatous features. Since the report of Kradin et al, 8 more cases have been reported by a variety of name. These tumors are composed of glycogen-rich, non-ciliated tubular epithelial cells forming irregularly shaped tubules or arranged in a papillary pattern. A very remarkable findings of this tumor is the presence of endocrine cells which is confirmed by argyrophilia, immunohistochemistry or electron microscopy. We experienced a case of this tumor which showed hepatocytoid differentiation in addition to the characteristic histologic findings. Immunohistochemical studies performed on a resected tumor tissue showed immunoreactivity for alpha-fetoprotein, neuron-specific enolase and somatostatin, and endocrine type granules were found ultrastructurally. Although this tumor seems to have a relation with pulmonary blastoma in its histology, immunohistochemistry and ontogeny, a distinction between these should be attained because the average survival of the former group is longer as 23 months, while that of the latter is only 4 months.
Adenocarcinoma

No abstract available.

No Abstract Available.

No abstract available.
Dislocations*

Mesoblastic nephroma is an important differential diagnosis of a renal mass occurring in the neonatal period or in early childhood. It is a rare monomorphous congenital renal neoplasm most commonly recognized during the first 3 months of life. With the widespread application of ultrasound imaging, many cases are recognized prior to birth. We report a case of mesoblastic nephroma detected by ultrasonograph at 36 weeks of intrauterine fetal life and removed after birth. It showed a well circumscribed, grayish white, solid mass measuring 4x3x2 cm. The tumor was predominantly a classic type with a focal cellular pattern. Immunohistochemical and electron microscopic studies were done.
Diagnosis, Differential ; Kidney ; Kidney Neoplasms ; Nephroma, Mesoblastic* ; Parturition ; Ultrasonography

No abstract available.
Thyroid Gland* ; Thyroid Nodule*

No abstract available.

No abstract available.
Meningitis*

No abstract available.
Cytomegalovirus* ; Humans* ; Methotrexate* ; Papaverine*

PURPOSE: To evaluate CT findings of normal anatomic alteration after neck dissection. MATERIALS AND METHODS: The postoperative CT findings were retrospectively reviewed in 40 patients with neck dissection, comparing to preoperative CT. There were 28 patients with radical neck dissection and 12 patients with modified radical neck dissection or selective neck dissection. In addition to the neck dissection, 10 patients had undergone pectoralis major myocutaneous flap reconstruction, 20 patients taken laryngectomy, and 25 patients treated with radiotherapy. RESULTS: The typical CT findings of radical neck dissection were non-visualization of internal jugular vein and sternocleidomastoid muscle(28/28), ipsilateral neck flattening(26/28), and trapezius muscular atrophy(12/28). The other non-specific findings were tissue plane eftacement, subcutaneous reticular pattern, platysma muscle thickening, and adjacent soft tissue contrast enhancement which was the only evidence of previous operation in the cases of modified radical neck dissection or selective neck dissection. Reconstruction with myocutaneous flap was shown as ipsilateral bulk of fat and muscle(10/10). In cases with radiation therapy there was much increased density of submandibular gland(12/25). 15 patients showed recurrence on follow up CT scan, including regional metastasis in 10, stomal recurrence in two, and residual mass at primary site in three patients. CONCLUSION: CT is useful in evaluation of patients with neck dissection and in whom postoperative change impese diagnostic problem.
Follow-Up Studies ; Humans ; Jugular Veins ; Laryngectomy ; Myocutaneous Flap ; Neck Dissection* ; Neck* ; Neoplasm Metastasis ; Radiotherapy ; Recurrence ; Retrospective Studies ; Superficial Back Muscles ; Tomography, X-Ray Computed