Ultrasonographic characteristics of both adrenal glands in 15 dogs with functional adrenocortical tumors

1999 ◽  
Vol 35 (3) ◽  
pp. 193-199 ◽  
Author(s):  
A Hoerauf ◽  
C Reusch
Keyword(s):  
Adrenal Gland ◽  
Adrenal Glands ◽  
Adrenal Tumors ◽  
Ultrasonographic Examination ◽  
Adrenocortical Tumors ◽  
Normal Shape ◽  
Bilateral Adrenal Tumors ◽  
Gland Enlargement

Ultrasonographic examination of both adrenal glands was performed in 15 dogs with functional adrenocortical tumors (FAT). Bilateral adrenal tumors were diagnosed in three of 15 dogs, and unilateral tumors were diagnosed in 12 of 15 dogs. Adrenal tumors were characterized by adrenal gland enlargement with loss of the normal shape and parenchymal structure. The contralateral adrenal gland could be imaged in all dogs with unilateral tumors. Based on size, shape, and parenchymal structure, the contralateral adrenal gland was similar to adrenal glands of normal dogs. The results of this study show that: 1) both adrenal glands should be imaged routinely in dogs with hyperadrenocorticism; 2) bilateral adrenocortical tumors seem to be more frequent than previously assumed; 3) one normal adrenal gland does not exclude the existence of a contralateral FAT; and 4) the functional atrophy of the contralateral adrenal gland in dogs with FAT may not be apparent ultrasonographically.

Autogenous transplants of adrenal fragments in an animal model.

2018 ◽  
Vol 90 (4) ◽  
pp. 23-28 ◽  
Author(s):  
Agnieszka Dworzyńska ◽  
Katarzyna Paduszyńska ◽  
Lech Pomorski
Keyword(s):  
Adrenal Gland ◽  
Adrenal Insufficiency ◽  
Adrenal Glands ◽  
Bilateral Adrenalectomy ◽  
Adrenal Tumors ◽  
Human Beings ◽  
Sprague Dawley ◽  
The Third ◽  
Sprague Dawley Rats ◽  
New Treatment

Introduction Adrenal insufficiency is a typical complication after surgical treatment of adrenal tumors, especially after the removal of both adrenal glands. Human beings are not able to survive without adrenal glands and without proper hormonal substitution. Autotransplantation of a fragment of the adrenal gland may prevent this complication. This can be done by transplanting the entire adrenal glands or its fragment, such as the adrenal cortex cells. In the case of adrenal tumors, the entire adrenal gland can not be transplanted. However, it is possible to transplant cells from the tumor-free part. Succesful adrenal autografts may result in a new treatment of adrenal insufficiency. Materials and Methods: Autograft transplantation was performed on 3 groups of Sprague Dawley rats. In the first group, physiological corticosterone concentrations were determined. These animals were not operated. In the second group, both adrenal glands were removed. Corticosterone concentrations were determined after bilateral adrenalectomy. The third group was divided into two parts. In the first subgroup, bilateral adrenalectomy was performed simultaneosly with adrenal transplant into the omentum. In the second subgroup, right adrenalectomy was performed simultaneosly with and adrenal transplant into the omentum followed a month later by left adrenalectomy. During the experiment, corticosterone concentrations were measured at 4 time points. Results. The statistical difference between corticosterone concentrations in rats after two timed adrenalectomies and rats after bilateral adrenalectomy was statistically different, but these results were far from physiological concentrations.

scholarly journals Differentiated approach to surgical treatment of adrenal glands tumors

2021 ◽  
Vol 26 (4) ◽  
pp. 124-131
Author(s):  
О.B. Kutovyi ◽  
E.V. Zhmurenko
Keyword(s):  
Surgical Treatment ◽  
Adrenal Gland ◽  
Adrenal Insufficiency ◽  
Postoperative Period ◽  
Adrenal Glands ◽  
Treatment Algorithm ◽  
Adrenal Tumors ◽  
Hemodynamic Parameters ◽  
Results Of Treatment

Objective – to improve the results of treatment of adrenal tumors by optimizing a differentiated approach based on the analysis of the results of various surgical invasions. The paper analyzed the results of treatment of 145 patients with various adrenal tumors, which were divided into 2 groups: І (n=71) - patients after adrenalectomies, II (n=74) – after adrenal resections. Organ-preserving invasions showed better results during the early and long-term postoperative period in patients with corticosteromas, pheochromocytomas and incidentalomas by reducing the severity of fluctuations in hemodynamic parameters and the frequency of adrenal insufficiency. Due to the introduction of the treatment algorithm, the number of adrenal resections increased by 26.6% in patients with neoplasms more than 4,0 cm in diameter (p=0.0001). The choice of surgical invasion should be individualized, taking into account the clinical features of the disease, hormone indicator parameters, the size of tumors, the comprehensiveness of the adrenal gland lesion and the ratio of the latter to nearby organs and structures. Adrenal insufficiency was detected 14.2% more often after adrenalectomies (р=0.044) compared to adrenal resections. Treatment according to the developed algorithm reduced the incidence of adrenal insufficiency by 5.8% (p=0.028). In the long-term postoperative period, contralateral gland tumors occurred with the same frequency (4.8%) among patients after adrenalectomies and resections. Relapse of the neoplasm after resections was detected in 3 (7.1%), as a result of which 2.4% underwent repeated operations with the final removal of the gland. An increase in the size of a single adrenal gland was more common by 21.4% after adrenalectomies.

scholarly journals SAT-177 Relationship Between Visceral Fat and the Position of Adrenal Glands in Cranial-Caudal Direction in Patients with Primary Aldosteronism

2020 ◽  
Vol 4 (Supplement_1) ◽  
Author(s):  
Yui Shibayama ◽  
Norio Wada ◽  
Shuhei Baba ◽  
Shinji Obara ◽  
Hidetsugu Sakai ◽  
...  
Keyword(s):  
Adrenal Gland ◽  
Visceral Fat ◽  
Primary Aldosteronism ◽  
Adrenal Glands ◽  
Subcutaneous Fat ◽  
Adrenal Tumors ◽  
Fat Percentage ◽  
Endocrine Society ◽  
Plasma Aldosterone Concentration ◽  
Caudal Direction

Abstract Context: Adrenal glands locate at the retroperitoneal space and could be affected their positions by some factors. Adrenal glands being surrounded by visceral adipose tissue (VAT), we have hypothesized that the VAT amount influences the position of adrenal glands in cranial-caudal direction. In patients with primary aldosteronism (PA), comprehending the position of adrenal glands in cranial-caudal direction might be useful to predict the position of adrenal veins before performing adrenal venous sampling. Objectives: To clarify the influence of VAT amount on the position of adrenal glands, we investigated the correlation of visceral fat parameters with the position difference of adrenal glands in cranial-caudal direction in patients with PA. Materials and methods: This retrospective observational study included patients with PA according to the guidelines of both the Japan Endocrine Society and the Japan Society of Hypertension. Those with adrenal tumors more than 10 mm in diameter in computed tomography (CT) were excluded. We measured the position difference of the adrenal glands in cranial-caudal direction, from the top of right adrenal gland to the top of left adrenal gland by CT. We correlated visceral fat percentage (VF%), visceral fat area (VFA), and subcutaneous fat area (SCFA) evaluated by CT studies with the position difference of adrenal glands in cranial-caudal direction. Results: We analyzed 150 patients [male (n = 50), female (n = 100)]. Patients’ characteristics: Age was 54.8 ± 11.4, body mass index 24.9 ± 3.8 kg/m2, plasma aldosterone concentration 133.5 [101–176] pg/ml, plasma renin activity 0.3 [0.2–0.5] ng/ml/h, VF% 25.8 [19.8–33.6] %, VFA 88.3 [60.9–125.0] cm2, and SCFA was 147.4 [105.6–193.4] cm2 (mean ± SD, or median [interquartile range]). The position difference of adrenal glands in cranial-caudal direction was 9.7 ± 10.0 mm. In 120 patients (80.0%), left adrenal glands locate at the upper position comparing to right adrenal glands. In 19 patients (12.7%), right adrenal glands were positioned at the upper comparing to left adrenal glands. A positive correlation of VF%, VFA with the position difference of adrenal glands in cranial-caudal direction were shown (r = 0.451, p < 0.001, r = 0.426, p < 0.001, respectively). No significant correlation of SCFA with the position difference of adrenal glands in cranial-caudal direction was shown (r = 0.122, p = 0.139). In patients with more VAT amount, right adrenal glands locate at the upper position comparing to left adrenal glands. In patients with less VAT amount, left adrenal glands locate at the upper position comparing to right adrenal glands. Conclusions: Regardless of the variation of the position of adrenal gland on each side, the correlation was found between VAT and the position difference of adrenal glands in cranial-caudal direction in PA.

scholarly journals Pathological Findings in the Adrenal Glands of 80 Dogs

2018 ◽  
Vol 46 (1) ◽  
pp. 7
Author(s):  
Elisângela Olegário Da Silva ◽  
Giovana Wingeter Di Santis ◽  
Selwyn Arlington Headley ◽  
Ana Paula Frederico Rodrigues Loureiro Bracarense
Keyword(s):  
Adrenal Gland ◽  
Adrenocortical Carcinoma ◽  
Adrenal Glands ◽  
Clinical Signs ◽  
Adrenal Tumors ◽  
Endocrine Disorders ◽  
Adrenocortical Adenoma ◽  
Primary Tumors ◽  
Nodular Hyperplasia ◽  
Adrenocortical Carcinomas

Background: The adrenal glands development important endocrine functions and can be affected by primary or secondary diseases. These adrenal gland pathologies may induce clinical syndromes resulting from abnormalities in the production and secretion of hormones. Data about pathological changes in dogs are scarce. Therefore, the aim of the present study was to identify and evaluate the histopathological and epidemiological features of adrenal changes in dogs submitted to necropsy examination from 2005 to 2016 in a Veterinary Teaching Hospital, Londrina, Paraná, Brazil.Material, Methods & Results: During this period, 80 animals presented alterations of adrenal gland, representing 5.5% of all necropsied dogs. The pure breed dogs representing 58.6% and mixed breed 41.4%; 53.4% were female and 46.6% were male. The non-neoplastic adrenal lesions were more frequently (57.5%) compared to the neoplastic changes (42.5%). Most of the adrenal glands lesions occurred in older dogs (60%), following by the middle aged (31.25%) and young dogs (8.75%). The main non-neoplastic lesions observed in the adrenal glands were of hyperplastic (69.5%) and circulatory (26%) origin, among the earlier, 68.8% were diffuse hyperplasia and 31.2% nodular hyperplasia. The nodular hyperplasia was classified as micronodular multifocal in 40% of the glands with nodular hyperplasia, macronodular multifocal in 30%, micronodular diffuse in 20%, and micronodular focal in 10%. The neoplasms observed were adrenocortical adenoma (ACA) in 44.1%, pheochromocytomas in 23.5% and adrenocortical carcinomas (ACC) in 11.7% of the dogs with adrenal tumors. Metastasis from other primary tumors were observed in 20.6%.Discussion: The data in veterinary literature about the frequency of changes in adrenal gland of dogs are scarce and focus features of diagnosis by ultrasound examination. Most of the adrenal changes observed in the present study were incidental findings observed during the necropsy examination and no specific clinical signs were observed. Non-neoplastic adrenal lesions, mainly of hyperplastic origin, were more frequently observed compared to the neoplastic changes. Differing from previous studies, the diffuse hyperplasia was the most common non neoplastic finding in the adrenal glands. Considering the subclassification of nodular hyperplasia, the multifocal micronodular and macronodular multifocal pattern were the most frequent. In veterinary literature, there are no data about frequency of nodular hyperplastic subtypes. However, in humans the subclassification of nodular hyperplasia is associated to development of endocrine disorders. Previous studies reported lower incidence of neoplastic changes in adrenal gland of dogs compared to the present results. The adrenocortical adenoma was the most common primary tumor, followed by the adrenocortical carcinoma, pheochromocytoma and adrenocortical carcinoma. Congestion and hemorrhage were common findings observed in the adrenal gland primary tumors. On the other hand, necrosis and inflammatory infiltrate were observed only in the adrenocortical carcinomas. These histopathological features may be used as tool in the differential diagnosis between well differentiated adrenocortical carcinoma and adenoma. The histopathological examination was fundamental to differential and definitive diagnosis of all canine adrenal gland disorders observed.

Primary adrenal lymphoma in an HIV patient: a rare case of bilateral adrenal tumors

2018 ◽  
Author(s):  
Maria Mavromati ◽  
Olivier Nawej ◽  
Olga Tsopra ◽  
Heba Al-Alwan ◽  
Francois Jornayvaz ◽  
...  
Keyword(s):  
Rare Case ◽  
Adrenal Tumors ◽  
Primary Adrenal Lymphoma ◽  
Adrenal Lymphoma ◽  
Bilateral Adrenal Tumors

Protective Effect of Hypericum perforatum L. Extract on Hexavalent Chromium Induced Toxicity in Rat Adrenal Gland

2017 ◽  
Vol 68 (9) ◽  
pp. 2014-2017
Author(s):  
Jelena Savici ◽  
Oana Maria Boldura ◽  
Cornel Balta ◽  
Diana Brezovan ◽  
Florin Muselin ◽  
...  
Keyword(s):  
Drinking Water ◽  
Adrenal Gland ◽  
Hexavalent Chromium ◽  
Structural Damage ◽  
Hypericum Perforatum ◽  
Adrenal Glands ◽  
Expression Level ◽  
Apoptotic Pathway ◽  
Hypericum Perforatum L ◽  
Induction Of Apoptosis

This study was carried out to test the possibility of hexavalent chromium administration through drinking water to induce the structural damage in rat�s adrenal glands and the possibility of Hypericum perforatum extract to faith against chromium aggression. Chromium induced cellular stress was determined by the expression level assessment of the Bcl2 genes family, known to modulate the apoptotic pathway. Obtained results showed that exposure to chromium altered adrenal glands morphology, by induction of apoptosis. When Hypericum perforatum extract was administered expression level of Bcl2 genes and histological lesions in adrenal glands were significantly reduced.

scholarly journals Differentiating Benign from Malignant Adrenocortical Tumors by a Single Morphological Parameter—a Clinicopathological Study on 837 Adrenocortical Neoplasias

2020 ◽  
Vol 11 (4) ◽  
pp. 705-710
Author(s):  
Martin K. Walz ◽  
Klaus A. Metz ◽  
Sarah Theurer ◽  
Cathrin Myland ◽  
Pier F. Alesina ◽  
...  
Keyword(s):  
Adrenocortical Carcinoma ◽  
Tumor Necrosis ◽  
Morphological Differentiation ◽  
Scoring Systems ◽  
Distant Metastases ◽  
Adrenal Tumors ◽  
Control Group ◽  
Consecutive Series ◽  
Morphological Parameter ◽  
Adrenocortical Tumors

AbstractThe morphological differentiation between benign and malignant adrenocortical tumors is an ongoing problem in diagnostic pathology. In recent decades the complex scoring systems have been widely used to calculate the probability of malignancy in adrenocortical tumors on the basis of a variety of histomorphological parameters. We herewith present a substantially simplified method to diagnose adrenocortical carcinoma by a single histomorphological parameter on a consecutive series of more than 800 adrenocortical tumors. Between January 2000 and May 2019, altogether 2305 adrenalectomies for of all types of diseases were removed, approximately 98% by minimally invasive approaches. After exclusion of pheochromocytomas, adrenal ganglioneuromas, adrenal metastases, Cushing’s disease related specimens, and Conn’s adenomas, the present series finally consisted of 837 adrenocortical tumors. All tumors were analyzed by experienced pathologists of a single institution using standard histopathological methods (Hematoxylin-Eosin and Ki67 stained sections). Clinical and histopathologic data were prospectively collected and retrospectively analyzed. Clinically, 385 patients had 420 functioning tumors (FT), and 417 had non-functioning adrenal tumors (NFT). The mean size of FT was 3.8 ± 1.4 cm (range 0.5–16 cm) and for NFT 4.5 ± 1.6 cm (range 1.5–18 cm). Histomorphologically, 32 adrenal tumors were classified as adrenocortical carcinoma (ACC; 3.8%). In all 32 cases (tumor size 9.1 ± 4.0 cm, range 3–18 cm), confluenting tumor necrosis could be demonstrated. The remaining 805 tumors (control group) completely lacked this highly reproducible single morphological feature. Ki67 levels above 10% were found in 31 of 32 ACCs and never in adrenocortical adenomas (ACA). With a mean follow-up of 8.2 years, 24 out of 32 patients primarily diagnosed as ACC developed distant metastases (75.0%), whereas all patients in the control group remained free of local or distant recurrence. We conclude that a single morphological parameter (confluenting tumor necrosis) is sufficient to predict a poor clinical course in adrenocortical tumors. The histomorphological diagnosis of this parameter is straightforward and highly reproducible.

UTILIZATION OF [26-14C]CHOLESTEROL BY HUMAN FOETAL ADRENAL GLANDS IN VITRO

1978 ◽  
Vol 79 (3) ◽  
pp. 393-394 ◽  
Author(s):  
R. GUNASEGARAM ◽  
K. L. PEH ◽  
P. C. T. CHEW ◽  
S. M. M. KARIM ◽  
S. S. RATNAM
Keyword(s):  
Adrenal Gland ◽  
Steroid Hormones ◽  
Adrenal Glands ◽  
De Novo ◽  
Obstetrics And Gynaecology ◽  
Perfusion Studies

Department of Obstetrics and Gynaecology, University of Singapore, Kandang Kerbau Hospitalfor Women, Singapore 8, Republic of Singapore (Received 3 May 1978) From the previous studies of Bloch & Benirschke (1959, 1962) and Plotz, Kabara, Davis, LeRoy & Gould (1968) it appears that at mid-term, human foetal adrenal glands are capable of synthesizing C21- and C19-steroids de novo from acetate and cholesterol. Villee, Engel, Loring & Villee (1961), however, incubated slices and homogenates of foetal adrenal gland with [2-14C]acetate or [4-14C]cholesterol and could not demonstrate the incorporation of radioactivity into these steroids. Moreover, perfusion studies by three groups of investigators indicated only minute conversions of the same radioactive substrates into neutral steroids in the foetal adrenal glands (Solomon, Bird, Ling, Iwamiya & Young, 1967; Telegdy, Weeks, Archer, Wiqvist & Diczfalusy, 1970a; Telegdy, Weeks, Lerner, Stakemann & Diczfalusy, 1970b). It is widely believed that steroid hormones are normally synthesized from acetate via

scholarly journals Specificity of action of adrenocorticotrophin in vitro on ascorbate transport in rat adrenal glands

1970 ◽  
Vol 118 (2) ◽  
pp. 283-289 ◽  
Author(s):  
M. Clayman ◽  
D. Tsang ◽  
A. F. De Nicola ◽  
R. M. Johnstone
Keyword(s):  
Adrenal Gland ◽  
Transport System ◽  
Adrenal Glands ◽  
Ascorbate Transport

The inhibition of ascorbate transport by rat adrenal quarters in response to steroidogenesis in vitro was shown to be highly specific with respect to tissue, substrate and steroidogenic agent. The transport system in vitro is capable of net accumulation of ascorbate. The evidence is consistent with the conclusion that ascorbate `depletion' in the adrenal gland is due to a specific block by corticoids of the uptake of ascorbate.

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