scholarly journals Pituitary stalk interruption syndrome

2021 ◽  
Author(s):  
Ammar Haouimi
Keyword(s):  
Pituitary Stalk

Fine Structural Changes in the Adenohypophyses of Rats Following Destruction of the Pituitary Stalk

1977 ◽  
Vol 35 ◽  
pp. 496-497
Author(s):  
K. Kovacs ◽  
E. Horvath ◽  
J. M. Bilbao ◽  
F. A. Laszlo ◽  
I. Domokos
Keyword(s):  
Structural Changes ◽  
Tissue Injury ◽  
Anterior Lobe ◽  
Uranyl Acetate ◽  
Male Rats ◽  
Pituitary Stalk ◽  
Sequence Of Events ◽  
Pituitary Glands ◽  
Electrolytic Lesions ◽  
Ultrathin Sections

Electrolytic lesions of the pituitary stalk in rats interrupt adenohypophysial blood flow and result in massive infarction of the anterior lobe. In order to obtain a deeper insight into the morphogenesis of tissue injury and to reveal the sequence of events, a fine structural investigation was undertaken on adenohypophyses of rats at various intervals following destruction of the pituitary stalk.The pituitary stalk was destroyed electrolytically, with a Horsley-Clarke apparatus on 27 male rats of the R-Amsterdam strain, weighing 180-200 g. Thirty minutes, 1,2,4,6 and 24 hours after surgery the animals were perfused with a glutaraldehyde-formalin solution. The skulls were then opened and the pituitary glands removed. The anterior lobes were fixed in glutaraldehyde-formalin solution, postfixed in osmium tetroxide and embedded in Durcupan. Ultrathin sections were stained with uranyl acetate and lead citrate and investigated with a Philips 300 electron microscope.

Abstract #906: Squamous Cell Carcinoma of the Pituitary Stalk, A Primary Cancer

2016 ◽  
Vol 22 ◽  
pp. 196
Author(s):  
Viviana Ortiz-Santiago ◽  
Oscar Ruiz ◽  
Milliette Alvarado Santiago ◽  
Loida Gonzalez-Rodriguez ◽  
Margarita Ramirez-Vick
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Pituitary Stalk ◽  
Primary Cancer

Pituitary stalk interruption syndrome: an uncommon presentation

2019 ◽  
Author(s):  
Lopez Valverde Maria Eugenia ◽  
Ojeda Luna Florencio ◽  
Lopez Manuel Martin ◽  
Rebollo Perez Maria Isabel
Keyword(s):  
Pituitary Stalk ◽  
Uncommon Presentation

MR imaging: a precision instrument for measuring the pituitary stalk?

1993 ◽  
Vol 161 (6) ◽  
pp. 1334-1334
Author(s):  
Y Miaux ◽  
M Williams ◽  
C Turki ◽  
A Khairoune
Keyword(s):  
Mr Imaging ◽  
Pituitary Stalk ◽  
Precision Instrument

Gonadotrophic status in adolescents with pituitary stalk interruption syndrome

2008 ◽  
Vol 69 (1) ◽  
pp. 105-111 ◽  
Author(s):  
Diane Rottembourg ◽  
Agnès Linglart ◽  
Catherine Adamsbaum ◽  
Najiba Lahlou ◽  
Cécile Teinturier ◽  
...  
Keyword(s):  
Pituitary Stalk

scholarly journals Occult Langerhans Cell Histiocytosis Presenting with Papillary Thyroid Carcinoma, a Thickened Pituitary Stalk and Diabetes Insipidus

2016 ◽  
Vol 2016 ◽  
pp. 1-3 ◽  
Author(s):  
Michael S. Gordon ◽  
Murray B. Gordon
Keyword(s):  
Papillary Thyroid Carcinoma ◽  
Thyroid Carcinoma ◽  
Diabetes Insipidus ◽  
Langerhans Cell Histiocytosis ◽  
Hypogonadotropic Hypogonadism ◽  
Langerhans Cell ◽  
Pituitary Stalk ◽  
Bright Spot ◽  
Molecular Testing ◽  
Papillary Thyroid

Etiologies of a thickened stalk include inflammatory, neoplastic, and idiopathic origins, and the underlying diagnosis may remain occult. We report a patient with a thickened pituitary stalk (TPS) and papillary thyroid carcinoma (PTC) whose diagnosis remained obscure until a skin lesion appeared. The patient presented with PTC, status postthyroidectomy, and I131therapy. PTC molecular testing revealed BRAF mutant (V600E, GTC>GAG). She had a 5-year history of polyuria/polydipsia. Overnight dehydration study confirmed diabetes insipidus (DI). MRI revealed TPS with loss of the posterior pituitary bright spot. Evaluation showed hypogonadotropic hypogonadism and low IGF-1. Chest X-ray and ACE levels were normal. Radiographs to evaluate for extrapituitary sites of Langerhans Cell Histiocytosis (LCH) were unremarkable. Germinoma studies were negative: normal serum and CSF beta-hCG, alpha-fetoprotein, and CEA. Three years later, the patient developed vulvar labial lesions followed by inguinal region skin lesions, biopsy of which revealed LCH. Reanalysis of thyroid pathology was consistent with concurrent LCH, PTC, and Hashimoto’s thyroiditis within the thyroid. This case illustrates that one must be vigilant for extrapituitary manifestations of systemic diseases to diagnose the etiology of TPS. An activating mutation of the protooncogene BRAF is a potential unifying etiology of both PTC and LCH.

Approach To The Pediatric Patient: Central Diabetes Insipidus

2022 ◽  
Author(s):  
Giuseppa Patti ◽  
Flavia Napoli ◽  
Daniela Fava ◽  
Emilio Casalini ◽  
Natascia Di Iorgi ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Diabetes Insipidus ◽  
Central Diabetes Insipidus ◽  
Pituitary Stalk ◽  
Central Nervous System Damage ◽  
Gold Standard Method ◽  
Underlying Condition ◽  
Detailed Medical History ◽  
Over Time

Abstract Central diabetes insipidus (CDI) is a complex disorder in which large volumes of dilute urine are excreted due to arginine-vasopressin deficiency, and it is caused by a variety of disorders affecting the hypothalamic-posterior pituitary network. The differential diagnosis is challenging and requires a detailed medical history, physical examination, biochemical approach, imaging studies and, in some cases, histological confirmation. Magnetic resonance imaging is the gold standard method for evaluating congenital or acquired cerebral and pituitary stalk lesions. Pituitary stalk size at presentation could be normal, but it may change over time, depending on the underlying condition, while other brain areas or organs may become involved during follow up. Early diagnosis and treatment are crucial in order to avoid central nervous system damage, germ cell tumor dissemination, and to minimize complications of multiple pituitary hormone defects. We provide a practical update on the diagnosis and management of patients with CDI and highlight several pitfalls that may complicate the differential diagnosis of conditions presenting with polyuria and polydipsia. The need for a careful and close follow-up of patients with “apparently” idiopathic CDI is particularly emphasized, because the underlying condition may be recognized over time. The clinical scenario that we outline at the beginning of this article represents the basis for the discussion about how the etiological diagnosis of CDI can be overlooked, and demonstrates how a water intake and urine output improvement can be a sign of progressive damage of both hypothalamus and anterior pituitary gland with associated pituitary hormonal deficiencies.

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