PubMed Health⌕ Search

Biomedical subjects

A Kónya

Publications and source records attributed to A Kónya.

17 recordsLinked to original sources
PubMed1992

[Percutaneous balloon-catheter dilatation of benign strictures of the bile ducts].

Two cases of patients with benign biliary strictures (one with anastomotic and another with iatrogen stenosis of the common bile duct) successfully treated by percutaneous transhepatic balloon dilatation are presented. The patients have been symptom-free for 24 and 14 months, respectively. The author deals with the indication of the procedure including all the benign stenoses where surgical reconstruction is not feasible. It is also emphasized that the balloon dilatation needs rather long-time manipulation during which both the patient and the personnel are exposed to significant amount of scattered radiation. One of the important factors in decreasing the need for manipulation is the availability of adequate devices (a series of high pressure balloon catheters).

Adult↗
PubMed1992

Aneurysmal bone cysts treated by superselective embolization.

A series of 7 cases of aneurysmal bone cysts (ABC), all but 1 located in the pelvic bones, which were treated by transcatheter embolization is presented. Five embolizations were performed for primary treatment, while in 2 patients they were performed preoperatively. In all patients a definite histological diagnosis was established by open biopsy, and plain radiographs as well as computerized tomography (CT) were applied for evaluation of the results. The embolizing materials were tissue adhesive for permanent, and Gelfoam for preoperative vessel occlusions. Of 5 lesions treated for the purpose of definitive embolization, 3 (all located in the superior pubic ramus) showed complete ossification; in one, partial remineralization and progression occurred. In a further patient with a secondary ABC, partial reconstitution was recorded. Both preoperative embolizations resulted in successful en bloc resection with minimal blood loss. Transcatheter embolization is the treatment of choice for the highly vascular ABC in unfavorable anatomical locations.

Adolescent↗
PubMed1992

Aneurysmal bone cyst. A review of 52 primary and 16 secondary cases.

Authors report on the results of treatment of 52 primary and 16 secondary aneurysmal bone cysts (ABC). ABC grow rapidly; 84% of them have already destroyed more than the half of the bone width at recognition. En bloc resection is preferred when the ABC is growing superficially and eccentrically and more than half of the bone width is intact. Careful curettage and bone grafting still remains the surgical method of choice in the majority of cases, when the ABC is more destructive and affects the subchondral bone of the joints. Segmental resection is only indicated when removal of the affected bone does not influence the function of the extremity. Superselective embolization of the cyst was performed in seven cases with excellent results. This method is suggested for ABC in certain locations inaccessible to surgical intervention, e.g., the pelvis, or to avoid excessive bleeding in hypervascularized tumors. In one case, however, an incomplete rebuilding of the ABC could only be achieved by the administration of calcitonin. The 16 cases of secondary ABC were observed mostly in association with osteoblastomas, giant-cell tumors, and osteosarcomas. The incidence of the secondary ABC was 23% in the whole ABC group but not more than 2-4% among the osteosarcomas and giant-cell tumors. Secondary ABC may confuse the histological and clinical diagnoses and that, especially in cases of osteosarcoma, may have fatal consequences.

Adolescent↗
PubMed1992

Calcitonin therapy of aneurysmal bone cysts.

Seven aneurysmal bone cysts (ABC) were treated with the hormone calcitonin. Six of the cysts, which were hypovascular responded well to the calcitonin administered directly into the cyst. Ossification and rebuilding of the ABC occurred after some months in every case. One hypervascularized ABC, however, failed to respond either to embolo-therapy or to the calcitonin hormone treatment. The authors recommend calcitonin administration as a useful non-invasive method for the treatment of hypovascular ABC.

Adolescent↗
PubMed1992

Neoadjuvant intraarterial chemotherapy of soft tissue sarcomas.

A group of 51 patients with extremity sarcomas of soft-tissue origin received preoperative intraarterial (i.a.) chemotherapy via a percutaneously placed catheter. Treatments were performed as a series of chemotherapy cycles, giving a total of 129, and were carried out in the form of short-term infusions consisting of doxorubicin and cisplatin, which lasted for 20-40 min. These i.a. infusions were combined with complementary methods, such as a tourniquet, occlusion-infusion and chemoembolization. In 3 patients complete remission and in 21 partial remission was registered, while in 27 patients only minimal response could be achieved, although in this latter group necrosis of eight tumors proved to be of significant value. In 43 of 51 patients successful limb salvage surgery was carried out.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed1991

[Arteriographic diagnosis of a tumor arising from an undescended testis].

A case with a tumor developed in an undescended testis diagnosed by arteriography is shown. Radiological diagnostic procedures in the diagnosis of cryptorchism are discussed. It is established that selective testicular arteriography is of great value in the preoperative diagnosis of an intra-abdominally located tumor developed in an undescended testis even in the area of modern high resolution non invasive imaging modalities.

Adult↗
PubMed1986

Hepatic artery embolisation--new approach for treatment of malignant carcinoid syndrome.

A transcatheter embolisation was carried out for treatment of a patient suffering from hepatic metastases of a malignant carcinoid tumour. Recurrent and very severe carcinoid symptoms could be observed; a bronchial carcinoid supposingly the primary tumour without characteristic symptoms was removed six years before. The carcinoid symptoms became resistant to pharmacological agents and finally ended in life-threatening clinical complications. The transcatheter hepatic artery embolisation was successfully performed and repeated three months later. After embolisation relief of carcinoid symptom and a significant decrease in 5-hydroxyindole acetic acid (5-HIAA) urinary excretion lasting for eight months could be observed. There were no serious complications with adequate pharmacological cover, however, a transient fever, leucocytosis, abdominal pain and an increase in serum transaminase activities occurred after the procedure. The transcatheter hepatic artery embolisation should be a method of choice for treatment of patients with carcinoid metastases producing severe carcinoid symptoms resistant to pharmacological agents.

Carcinoid Tumor↗