Pituitary adenomas are frequent benign tumors that cause a high morbidity due to their complications. Most cases are sporadic but 5% arise in a familial setting, associated with other tumors (as is for MEN1 and MEN4, Carney Complex, McCune-Albright Syndrome) or without other associated disease as is for FIPA (Familial Isolated Pituitary Adenomas) families. AIP (Aryl-hydrocarbon Receptor Interac...

conclusions radiological findings pleaded for a pituitary stone, but calcified adenomas in women, and calcified craniopharyngioma in the pediatric case could not be excluded, as our three patients were not operated on. introduction pituitary stone or pituitary calculus is a scientific enigma characterized by a large calcification in the pituitary sella. it can be discovered incidentally or in a...

The role of angiogenesis in pituitary tumor development has been questioned, as pituitary tumors have been usually found to be less vascularized than the normal pituitary tissue. Nevertheless, a significantly higher degree of vasculature has been shown in invasive or macropituitary prolactinomas when compared to noninvasive and microprolactinomas. Many growth factors and their receptors are inv...

Pituitary tumors are discovered either incidentally by imaging studies (incidentalomas) or via evaluation of certain clinical symptoms (symptomatic tumors). In this study, we first surveyed patients with incidentalomas who underwent surgery. Cases included 62.3% non-functioning adenomas (NFPAs), 14.5% functioning adenomas, and 13.8% Rathke’s cleft cysts. Next, compared the features surgical out...

Pituitary adenomas may develop sporadically or as part of the multiple endocrine neoplasia type 1 (MEN 1) syndrome. The gene responsible for MEN 1 syndrome was recently identified and cloned. Low rates of MEN 1 gene mutations and deletions have been reported in sporadic pituitary adenomas. To elucidate the role of the MEN 1 gene in the pathogenesis of MEN 1-associated pituitary tumors, we exami...

BACKGROUND Surgical treatment of giant pituitary adenomas is difficult due to complicated dissection of the sellar area. The extent of tumor resection affects the efficacy of surgical treatment. This study is to investigate the efficacy of microsurgical treatment for giant pituitary adenoma and to analyze the relationship between treatment efficacy and tumor resection extent. METHODS A retros...

OBJECTIVE Interleukin-6 (IL-6), a member of the gp130 cytokine family, is considered to be an important modulator of function and growth in endocrine anterior pituitary cells. In pituitary adenomas, where IL-6 is often produced by the tumour cells, it is thought to be involved in pituitary adenoma pathophysiology via autocrine/paracrine mechanisms. METHODS We have studied in primary cell cult...

Endoscopic endonasal transsphenoidal surgery (EETS) is a widely accepted technique for the surgical resection of pituitary tumours. In this report, we present our single-centre experience with EETS adenomas, mainly focusing on its efficacy and postoperative complications. Among 100 patients who underwent EETS, 57 (57%) were female 43 (43%) male. The mean age was 51.55 ± 13.51 years. Nonfunction...

The ZAC gene encodes a new zinc-finger protein that concomitantly induces apoptosis and cell cycle arrest and localizes to chromosome 6q24-q25, a well-known hot spot related to cancer. ZAC is highly expressed in the anterior pituitary gland, and its ablation by antisense targeting promotes pituitary cell proliferation. Here we investigate ZAC status in pituitary tumors to evaluate its role in p...