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Biomedical subjects

L Domínguez Gadea

Publications and source records attributed to L Domínguez Gadea.

6 recordsLinked to original sources

[Solid liver mass. Studies with nuclear medicine].

We present the case of a 23 year old female with two incidentally detected hepatic mass that have not clinically o radiologically specific findings. Nuclear medicine tracers, including colloids and hepatobiliary agents showing the characteristic findings of focal nodular hyperplasia: Hypervascularization, normal uptake of colloids, accumulation of hepatobiliary tracer and hot spots due to the retention of this tracer during the clearance fhase. The patient was underwent hepatectomy. The examination of surgical specimen revealed focal nodular hyperplasia. The scintigraphic studies could be an useful tool in the noninvasive diagnosis of liver masses.

Adult↗

[Gammagraphic diagnosis of a non-hyperactive suprarenal adenoma].

It is described the case of a patient with Ovarian Cystadenoma in whom a 3.5 cm nodular lesion was accidentally detected in her left suprarenal gland. She had no signs of hypercortisolism or any other suprarenal pathology and was symptomless. Determinations in the urine of 24 hours of Cortisol, Adrenaline and Noradrenaline, 17-ketosteroids and Tetrahydroaldosterone were normal. Daily rhythm and plasmatic determinations of ACTH, cortisol and 11-deoxycortisol were normal. The Dexamethasone suppression test was also normal. In the suprarenal gammagraphy it appeared an intense captation by left suprarenal without visualization of right gland. A left suprarenalectomy was performed and the anatomopathological analysis showed a clear cell corticoadrenal adenoma. Therefore the only data of the function of suprarenal adenoma was the one coming from gammagraphy. We thought that the adenoma was responsible of practically all the corticoadrenal function without reaching pathological levels, meeting the criteria of "pre-Cushing" syndrome or subclinical Cushing, due to the fact that the contralateral gland was not seen in the gammagraphy. Therefore in the characterization of certain tumors which appear clinically and biochemically as non functional, the suprarenal gammagraphy could be a technique of great usefulness for the diagnosis.

Adenoma↗

[Gammagraphic study of nodular adrenal hyperplasia].

A common cause of the Cushing's Syndrome (CS) is nodular suprarenal hyperplasia (NSH), which is characterized by the presence of nodes in both suprarenal glands. Its pathophysiology is not well known and its diagnosis is quite difficult due to the heterogenicity of the biochemical and radiological data. We analyzed the suprarenal gammagraphies (SRG) of 7 patients with anatomopathological diagnosis of NSH. Bilateral uptake was observed in all cases and in five patients, such bilateral uptake presented a clear asymmetry. We believe that these observations demonstrate a bilateral suprarenal affectation and are of great use in order to orientate the diagnosis of NSH and, especially, in order to differentiate it from other suprarenal diseases causing CS, like adenomas, in which uptake is unilateral.

Adrenal Glands↗

[Adrenal gland gammagraphy in the study of Cushing's syndrome-disease].

A retrospective study is presented of 19 patients who suffered Hypercortisolism who were examined by adrenal gammagraphy, echography, and CT scan in order to evaluate the usefulness of gammagraphy in the diagnostic approximation of this pathology. The gammagraphy findings had an excellent correlation with anatomopathologic findings, probably due to the combined morphologic and functional evaluation obtained with this technique which facilitates a complementary vision to the other diagnostic image exams (CT scan and echography) which, although they are the first choice given their availability and good resolution, they can easily lead to diagnostic errors which can be avoided if we can perform an adrenal gammagraphy; it is of special interest in the study of macro-micro-nodular hyperplasia and its differentiation from single adenomas.

Adrenal Cortex↗