Pituitary Adenomas
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Author(s):  
Andrej Paľa ◽  
Gwendolin Etzrodt-Walter ◽  
Georg Karpel-Massler ◽  
Maria Teresa Pedro ◽  
Benjamin Mayer ◽  
...  

Abstract Introduction Intraoperative magnetic resonance imaging (iMRI) improves the intraoperative detection of adenoma remnants in transsphenoidal surgery. iMRI might be redundant in endoscopic pituitary surgery in non-invasive tumors (Knosp 0–2) due to a superior visualization of anatomical structures in the periphery of the sella turcica compared to the microscopic technique. We identified the anatomical location of tumor remnants in iMRI and evaluated risk factors for secondary resection after iMRI and hereby selected patients with pituitary adenomas who may benefit from iMRI-assisted resection. Methods We conducted a retrospective monocenter study of patients who underwent iMRI-assisted transsphenoidal surgical resection of pituitary adenomas at our department between 2012 and 2020. A total number of 190 consecutive iMRI-assisted transsphenoidal surgeries of pituitary adenomas graded as Knosp 0–2 were selected for analysis. Exclusion criteria were missing iMRI availability or pathologies other than adenomas. Of these 190 cases, 46.3% (N = 88) were treated with microscopic, 48.4% (N = 92) with endoscopic, and 5.3% (N = 10) with endoscopic-assisted technique. Volumetric measurement of preoperative, intraoperative, and postoperative tumor extension was performed. Demographic data, tumor characteristics, and MRI features were evaluated. Additionally, analysis of adenoma remnants identified by iMRI was performed. Results An additional resection after iMRI was performed in 16.3% (N = 31). iMRI helped to reach gross total resection (GTR) in 83.9% (26/31) of these cases. False-positive resection was found in 1 patient (0.5%). Multivariable logistic analysis identified tumor volume (OR = 1.2, p = 0.007) recurrence (OR = 11.3, p = 0.002) and microscopic technique (OR = 2.8, p = 0.029) as independent risk factors for additional resection. Simultaneously, the endoscopic technique was significantly associated with GTR as evaluated by iMRI (OR = 2.8, p = 0.011) and postoperative MRI (OR = 5.8, p = 0.027). The detailed analysis of adenoma remnants on iMRI revealed the suprasellar location in a diaphragm fold, penetrating tumor above the diaphragm, or undetected invasion of cavernous sinus as well as in case of microscopic resection tumor location outside the line of sight as the main reasons for incomplete resections. Conclusion Tumor volume, recurrence, and microscopic technique were identified as independent predictors for additional resection in patients with Knosp 0–2 adenomas. iMRI might increase the extent of resection (EOR) safely even after the endoscopic visualization of the sella with very low risk for false-positive findings. Remnants of tumors hidden within the diaphragmic folds, intrathecally, or behind the infiltrated wall of cavernous sinus not recognized on preoperative MRI were the most common findings in iMRI.


2021 ◽  
Vol 12 ◽  
Author(s):  
Changxi Han ◽  
Shaojian Lin ◽  
Xingyu Lu ◽  
Li Xue ◽  
Zhe Bao Wu

Macrophages are one of the most common infiltrating immune cells and an essential component of tumor microenvironment. Macrophages and the soluble cytokines and chemokines produced play an important role in tumorigenesis, progression, invasion and metastasis in solid tumors. Despite the multiple studies in other solid tumors, there is little known about macrophages in pituitary adenomas. Recently, studies about pituitary adenoma-infiltrated macrophages have been emerging, including the immunohistochemical and immunophenotypic analysis of the pituitary adenomas and further studies into the mechanism of the crosstalk between macrophages and tumor cells in vivo and in vitro. These studies have offered us new insights into the polarization of macrophages and its role in tumorigenesis, progression and invasion of pituitary adenomas. This review describes the advances in the field of pituitary adenoma-infiltrated macrophages and the prospect of targeting macrophages as cancer therapy in pituitary adenoma.


2021 ◽  
Author(s):  
Chao Peng ◽  
Shuaikai Wang ◽  
Jinxiu Yu ◽  
Xiaoyi Deng ◽  
Zhishan Chen ◽  
...  

Abstract Backgrounds: Long non-coding RNAs (lncRNAs) play important roles in tumorigenesis and progression of various cancer types; however, their roles in the development of invasive pituitary adenomas (PAs) remain to be investigated.Methods: lncRNA microarray was performed in three invasive and three noninvasive PAs. Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis were performed, and coexpression networks between lncRNA and mRNA were constructed. Furthermore, three differentially expressed lncRNAs were selected for validation by real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) in PA samples. The diagnostic values of these three lncRNAs were further evaluated by receiver operating characteristic (ROC) analysis.Results: A total of 8872 lncRNAs were identified in invasive and paired noninvasive PAs using lncRNA microarray. Among these, the differentially expressed lncRNAs included 81 that were upregulated and 165 that were downregulated. GO enrichment and KEGG pathway analysis showed that these differentially expressed lncRNAs were associated with post-translational modifications of proteins. Furthermore, we performed target gene prediction and coexpression analysis. The interrelationships between the lncRNAs and mRNAs with significant differential expression were identified. Additionally, three differentially expressed lncRNAs were selected for validation in 41 PA samples by qRT-PCR. The expression levels of FAM182B, LOC105371531, and LOC105375785 in the invasive PAs were significantly (P < 0.05) lower than in the noninvasive PAs, and these results were consistent with the microarray data. ROC analysis suggested that FAM182B and LOC105375785 expression levels could be used to distinguish invasive PAs from noninvasive PAs.Conclusion: Our findings demonstrated the lncRNAs expression patterns in invasive PAs. Thus, FAM182B and LOC105375785 may be involved in the invasiveness of PAs and serve as new candidate biomarkers for the diagnosis of invasive PAs.


Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1473
Author(s):  
Xujun Shu ◽  
Yijie Zhou ◽  
Fangye Li ◽  
Tao Zhou ◽  
Xianghui Meng ◽  
...  

This study developed and evaluated nnU-Net models for three-dimensional semantic segmentation of pituitary adenomas (PAs) from contrast-enhanced T1 (T1ce) images, with aims to train a deep learning-based model cost-effectively and apply it to clinical practice. Methods: This study was conducted in two phases. In phase one, two models were trained with nnUNet using distinct PA datasets. Model 1 was trained with 208 PAs in total, and model 2 was trained with 109 primary nonfunctional pituitary adenomas (NFPA). In phase two, the performances of the two models were investigated according to the Dice similarity coefficient (DSC) in the leave-out test dataset. Results: Both models performed well (DSC > 0.8) for PAs with volumes > 1000 mm3, but unsatisfactorily (DSC < 0.5) for PAs < 1000 mm3. Conclusions: Both nnU-Net models showed good segmentation performance for PAs > 1000 mm3 (75% of the dataset) and limited performance for PAs < 1000 mm3 (25% of the dataset). Model 2 trained with fewer samples was more cost-effective. We propose to combine the use of model-based segmentation for PA > 1000 mm3 and manual segmentation for PA < 1000 mm3 in clinical practice at the current stage.


2021 ◽  
Author(s):  
Natasha Ironside ◽  
Harrison Snyder ◽  
Zhiyuan Xu ◽  
David Schlesinger ◽  
Ching-Jen Chen ◽  
...  

Abstract IntroductionDelayed hypopituitarism is the most common complication after stereotactic radiosurgery (SRS) for pituitary adenomas. The aim of this study was to investigate the relationship between the distance from the hypothalamic-pituitary axis to the treatment target and anterior pituitary function preservation after SRS. MethodsBetween 2007 and 2020, consecutive adult patients who underwent single-session SRS for pituitary adenomas with ³6 months of follow-up were included. Distance measurements between hypothalamic-pituitary axis structures and the SRS target volume were quantified on MRI. The primary outcome was anterior pituitary function preservation. Outcomes were compared using multivariable regression and area under the receiver operator characteristic curve (AUROC) analyses. ResultsThe study cohort comprised 224 patients, who were categorized by preservation (n=168) and no preservation (n=56) of anterior pituitary function after SRS. Independent predictors of anterior pituitary function preservation were a greater distance between the center of the pituitary gland and center of the SRS target (OR=1.101 [1.000–1.213], p=0.050), and a shorter clinical follow-up duration (OR=0.985 [0.977–0.993], p<0.0001). The adjusted AUROC for the distance from the center of the pituitary gland and center of the SRS target in predicting anterior pituitary function preservation was 0.595. The sensitivity, specificity, positive predictive value and negative predictive value in predicting anterior pituitary function preservation at the optimal cut-off distance of 15mm were 30.0%, 88.0%, 89.9% and 26.2%, respectively.ConclusionsGreater distance between the normal pituitary gland and the SRS target is associated with anterior pituitary function preservation and increasing this distance should be a goal of adenoma resection. Larger prospective, multi-center studies are necessary to corroborate this finding and establish the effects of distance on hypopituitarism after SRS for pituitary adenomas.


Author(s):  
Meifen Shen ◽  
Guixiao Sheng ◽  
Yan Yang ◽  
Chao Wu ◽  
Chen Ma ◽  
...  

IntroductionIt is necessary to investigate the current psychological distress and needs status of patients with pituitary adenoma in China.Material and methodsPatients with pituitary adenoma treated in our hospital from May 2019 to December 2019 were included. The psychological distress and needs scale for pituitary adenoma patients was used to investigate the psychological distress and needs of patients. Besides, univariate and multiple linear regression analyses were conducted to analyze the influencing factors.ResultsA total of 254 valid questionnaires were included. The total psychological distress and need score of patients with pituitary adenoma was (23.89±18.41) and (21.91±20.03) points respectively. There were significant differences on the psychological distress score in different occupational status, personal income, types of pituitary adenomas, size of pituitary adenoma, invasiveness, endocrine level and history of surgery (all p<0.05). The size of pituitary adenoma, endocrine level and pituitary adenoma type were the influencing factors of patients' psychological distress(all p<0.05). There were significant differences on the need score in different age, occupational status, personal income, types of pituitary adenomas and endocrine level(all p<0.05). Endocrine level, other rare types of pituitary adenoma and age were the influencing factors of patients' needs (all p<0.05).ConclusionsOur study is one of the few studies focused on the psychological distress and needs status of Chinese patients with pituitary adenoma. Medical staff should pay attention to the psychological distress of patients with large, rare type of pituitary adenomas and abnormal endocrine level, and take corresponding interventions to alleviate their psychological distress.


Author(s):  
Ching-Chung Ko ◽  
Chin-Hong Chang ◽  
Tai-Yuan Chen ◽  
Sher-Wei Lim ◽  
Te-Chang Wu ◽  
...  

Medicine ◽  
2021 ◽  
Vol 100 (46) ◽  
pp. e27843
Author(s):  
Chao Tao ◽  
Gang Cheng ◽  
Yunxiang Chen ◽  
Peiyuan Gu ◽  
Weixing Hu

2021 ◽  
Vol 12 ◽  
Author(s):  
Tyler Cardinal ◽  
Casey Collet ◽  
Michelle Wedemeyer ◽  
Peter A. Singer ◽  
Martin Weiss ◽  
...  

PurposeDetermine predictive factors for long-term remission of acromegaly after transsphenoidal resection of growth hormone (GH)-secreting pituitary adenomas.MethodsWe identified 94 patients who had undergone transsphenoidal resection of GH-secreting pituitary adenomas for treatment of acromegaly at the USC Pituitary Center from 1999-2019 to determine the predictive value of postoperative endocrine lab values.ResultsPatients underwent direct endoscopic endonasal (60%), microscopic transsphenoidal (38%), and extended endoscopic approaches (2%). The cohort was 63% female and 37% male, with average age of 48.9 years. Patients presented with acral enlargement (72, 77%), macroglossia (40, 43%), excessive sweating (39, 42%), prognathism (38, 40%) and frontal bossing (35, 37%). Seventy-five (80%) were macroadenomas and 19 (20%) were microadenomas. Cavernous sinus invasion was present in 45%. Available immunohistochemical data demonstrated GH staining in 88 (94%) and prolactin in 44 (47%). Available postoperative MRI demonstrated gross total resection in 63% of patients and subtotal resection in 37%. Most patients (66%) exhibited hormonal remission at 12 weeks postoperatively. Receiver operating characteristic (ROC) curves demonstrated postoperative day 1 (POD1) GH levels ≥1.55ng/mL predicted failure to remit from surgical resection alone (59% specificity, 75% sensitivity). A second ROC curve showed decrease in corrected insulin-like growth factor-1 (IGF-1) levels of at least 37% prognosticated biochemical control (90% sensitivity, 80% specificity).ConclusionPOD1 GH and short-term postoperative IGF-1 levels can be used to successfully predict immediate and long-term hormonal remission respectively. A POD1 GH cutoff can identify patients likely to require adjuvant therapy to emphasize clinical follow-up.


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