Tumor Tissue Identification in the Pseudocapsule of Pituitary Adenoma: Should the Pseudocapsule be Removed for Total Resection of Pituitary Adenoma?

2009 ◽  
Vol 64 (suppl_1) ◽  
pp. ONS62-ONS70 ◽  
Author(s):  
Eun Jig Lee ◽  
Jung Yong Ahn ◽  
Taewoong Noh ◽  
Se Hun Kim ◽  
Tai Seung Kim ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Pituitary Adenoma ◽  
Recurrence Rate ◽  
Adrenocorticotropic Hormone ◽  
Tumor Tissue ◽  
Remission Rate ◽  
Pituitary Function ◽  
Subtotal Resection ◽  
Total Resection ◽  
Resection Group

Abstract Objective: The microsurgical pseudocapsule can be found in the transition zone between an adenoma and the surrounding normal pituitary tissue. We investigated the precise histology of the pseudocapsule. Furthermore, we evaluated the remission rate, the changes in pituitary function, and the recurrence rate after intensive resection of the pseudocapsule. Methods: In 616 patients with pituitary adenomas (Hardy Types I–III) over a period of 14 years, we introduced intensive resection of the microsurgical pseudocapsule to achieve complete tumor removal. A combined pituitary function test and radiological study were performed on the patients before surgery, 1 year after surgery, and at subsequent 1.5-year intervals 2 to 13 years postoperatively. Results: Microsurgical pseudocapsules were identified in 343 (55.7%) of 616 patients, and the distinct microsurgical pseudocapsules were observed in 180 (52.5%) of these patients. In the remaining 163 patients, the microsurgical pseudocapsules were incompletely developed. Tumor cluster infiltration was present in the pseudocapsule in 71 (43.6%) of these patients. Aggressive resection of the microsurgical pseudocapsule was more often required in larger tumors than in smaller ones. The presence of a pseudocapsule was slightly more frequent in prolactin-secreting tumors (70.9%) than in growth hormone-secreting (55.0%) and adrenocorticotropic hormone-secreting (40.0%) tumors. In the 243 patients of the total resection group who underwent combined pituitary function tests more than 2 times after surgery, the surgical remission rate was 99.1 % in clinically nonfunctional tumors, 88% in growth hormone-secreting, 70.6% in prolactin-secreting, and 100% in adrenocorticotropic hormone-secreting tumors. The surgical remission rate was 86.2% in the presence of a pseudocapsule and 94.3% in the absence of a pseudocapsule. Preoperative hypopituitarism improved in 140 patients (57.6%), persisted in 47 patients (19.3%), and was aggravated in 33 patients (13.6%). There was no statistical difference in improvement or deterioration of pituitary function according to the existence or absence of the pseudocapsule. The tumor recurrence rate was 0.8% in the total resection group and was 42.1 % in the subtotal resection group. Conclusion: We have shown that tumor tissue is frequently present within the pseudocapsule, suggesting that any tumor remnant in the pseudocapsule could be a source of recurrence and an obstacle to achieving complete remission. These results indicate that intensive resection of the pseudocapsule could result in a higher remission rate without deteriorating pituitary function.

Ketotic Hypoglycemia and Hypopituitarism

PEDIATRICS ◽  
1979 ◽  
Vol 63 (3) ◽  
pp. 414-415
Author(s):  
William B. Lorentz
Keyword(s):  
Amino Acids ◽  
Growth Hormone ◽  
Short Stature ◽  
Adrenocorticotropic Hormone ◽  
Serum Levels ◽  
Pituitary Function ◽  
Acth Deficiency ◽  
Ketotic Hypoglycemia ◽  
Gluconeogenic Substrate

A 5-year-old girl had hypoglycemia and was of short stature. Studies of pituitary function demonstrated combined growth hormone and adrenocorticotropic hormone (ACTH) deficiency. She was shown to have ketotic hypoglycemia. In contrast to patients previously reported with hypopituitarism and ketotic hypoglycemia, she had no deficiency of gluconeogenic substrate. Serum levels of alanine and other gluconeogenic amino acids were normal during fasting and hypoglycemia. These studies suggest that inadequate gluconeogenic precursors are not the cause of her ketotic hypoglycemia. Ketotic hypoglycemia in association with hypopituitarism may be secondary to multiple biochemical defects.

Effect of the Extent of Surgical Resection on Survival and Quality of Life in Patients with Supratentorial Glioblastomas and Anaplastic Astrocytomas

Neurosurgery ◽  
1987 ◽  
Vol 21 (2) ◽  
pp. 201-206 ◽  
Author(s):  
Mario Ammirati ◽  
Nicholas Vick ◽  
Liao Youlian ◽  
Ciric Ivan ◽  
Michael Mikhael
Keyword(s):  
Surgical Resection ◽  
Pathological Condition ◽  
Tumor Resection ◽  
Gross Total Resection ◽  
Subtotal Resection ◽  
Total Resection ◽  
Postoperative Radiation Therapy ◽  
Resection Group ◽  
Extent Of Surgical Resection

Abstract Thirty-one patients operated upon for supratentorial glioblastomas or anaplastic astrocytomas were studied to evaluate the effect of the extent of surgical resection on the length and quality of survival. The median age was 50 years and the median preoperative Karnofsky rate was 80. Twenty-one patients (68%) had glioblastoma multiforme, and 10 patients (32%) had anaplastic astrocytoma. Early postoperative enhanced computed tomography was used to determine the extent of tumor resection. Gross total tumor resection was accomplished in 19 patients (61%), and subtotal resection was performed in 12 patients (39%). The two groups were comparable regarding age, sex, pathological condition, preoperative Karnofsky rating, tumor location, postoperative radiation therapy, and postoperative chemotherapy (P > 0.05). The gross total resection group lived longer than the subtotal resection group by life table analysis (P < 0.001; median survival of 90 and 43 weeks, respectively). Postoperatively, the mean functional ability measured by the Karnofsky rating was significantly increased in the gross total resection group (P = 0.006), but not in the subtotal resection group (P > 0.05). The difference in degree of change between preoperative and postoperative Karnofsky rating in the two groups was statistically significant (P = 0.002). The gross total resection group spent significantly more time after the operation in an independent status (Karnofsky rating ≥ 80) compared to the subtotal resection group (P = 0.007; median time of 185 and 12.5 weeks, respectively). Gross total resection of supratentorial glioblastomas and anaplastic astrocytomas is feasible and is directly associated with longer and better survival when compared to subtotal resection.

scholarly journals Transsphenoidal Surgery of Invasive Corticotroph Adenomas: Results in A Series of 86 Consecutive Patients

2021 ◽  
Author(s):  
Congxin Dai ◽  
Ming Feng ◽  
Lin Lu ◽  
Bowen Sun ◽  
Yanghua Fan ◽  
...  
Keyword(s):  
Transsphenoidal Surgery ◽  
Remission Rate ◽  
Partial Resection ◽  
Gross Total Resection ◽  
Subtotal Resection ◽  
Total Resection ◽  
Persistent Disease ◽  
Biochemical Remission ◽  
Corticotroph Adenomas

Abstract Objective: Surgery is first-line treatment for corticotroph adenomas. Although most of corticotroph adenomas are noninvasive microadenomas that show expansive growth to surrounding tissues, a small subset of them is locally invasive and difficult to manage. The aim of this study was to evaluate surgical outcome of invasive corticotroph adenomas from a single-center. Patients and Methods: The clinical features and outcomes of CD patients who underwent transsphenoidal surgery (TSS) between January 2000 and September 2019 at Peking Union Medical College Hospital were collected from medical records. The clinical, endocrinological, radiological, histopathological, surgical outcomes and a minimum 12-month follow-up of 86 consecutive CD patients with invasive corticotroph adenomas were retrospectively reviewed. Results: Eighty-six patients with invasive corticotroph adenomas were included in the study. The average age at TSS was 37.7 years (range, 12 to 67 years), with a female-to-male ratio of 3.1:1 (65/21). The median duration of symptoms was 52.6 months (range, 1.0 to 264 months). The average of maximum diameter of tumor was 17.6 mm (range, 4.5–70 mm). All 86 patients with invasive corticotroph adenomas were performed TSS by microscopic or endoscopic approach. Gross-total resection was achieved in 63 patients (73.3%), subtotal resection in 18 (20.9%), and partial resection in 5 (5.8%). After surgery, the overall postoperative immediate remission rate was 48.8% (42/86), 51.2 % (44/86) of patients maintained persistent hypercortisolism. In 42 patients with initial remission, 16.7 % (7/42) of them experienced a recurrence. In these patients with persistent disease and recurrent CD, data about further treatment was available for 30 patients. The radiotherapy was used for 15 patients, and 4 (26.7%) of them achieved biochemical remission. Repeat TSS was performed in 5 patients, and none achieved remission. Medication was administrated in 4 patients, and one of them obtained disease control. Adrenalectomy was performed in 6 patients, and 5 (83.3 %) achieved biochemical remission. At last follow-up, (33.3%) 10 of 30 patients were in remission, and 20 patients still had persistent disease. The remission rate in patients with invasive corticotroph adenomas who underwent gross-total resection and first TSS were significantly higher than that in patients undergoing subtotal resection, partial resection, and a second TSS (all P＜0.05). However, there was no significant difference in the remission rate between patient with different tumor size, Knosp Grade and surgical approaches (P＞0.05).Conclusion: The management of invasive corticotroph adenomas remain a therapeutic challenge due to incomplete resection of invasive and/or a large adenoma. With application of multiple techniques assistance, approximately half of the patients could achieve gross-total resection and biochemical remission via TSS by experienced neurosurgeons. The extent of tumor resection and number of operations were associated with surgical remission rate in invasive corticotroph adenomas. If the remission was not achieved by surgery, other treatments including radiotherapy, medical therapy, and even bilateral adrenalectomy are required.

Long-term outcomes of transsphenoidal surgery for management of growth hormone–secreting adenomas: single-center results

2020 ◽  
Vol 133 (5) ◽  
pp. 1360-1370 ◽  
Author(s):  
Mohammed J. Asha ◽  
Hirokazu Takami ◽  
Carlos Velasquez ◽  
Selfy Oswari ◽  
Joao Paulo Almeida ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Recurrence Rate ◽  
Transsphenoidal Surgery ◽  
Remission Rate ◽  
Repeat Surgery ◽  
Significant Difference ◽  
Remission Rates ◽  
Biochemical Remission

OBJECTIVETranssphenoidal surgery is advocated as the first-line management of growth hormone (GH)–secreting adenomas. Although disease control is defined by strict criteria for biochemical remission, the length of follow-up needed is not well defined in literature. In this report, the authors present their long-term remission rate and identify various predictive factors that might influence the clinical outcome.METHODSThe authors conducted a single-institute retrospective analysis of all transsphenoidal procedures for GH-secreting adenomas performed from January 2000 to June 2016. The primary outcome was defined as biochemical remission according to the 2010 consensus criteria and measured at the 1-year postoperative mark as well as on the last recorded follow-up appointment.Secondary variables included recurrence rate, patterns of clinical presentation, and outcome of adjuvant therapy (including repeat surgery). Subgroup analysis was performed for patients who had biochemical or radiological “discordance”—patients who achieved biochemical remission but with incongruent insulin-like growth factor 1 (IGF-1)/GH or residual tumor on MRI. Recurrence-free survival analysis was conducted for patients who achieved remission at 1 year after surgery.RESULTSEighty-one patients (45 female and 36 male) with confirmed acromegaly treated with transsphenoidal surgery were included. In 62 cases the patients were treated with a pure endoscopic approach and in 19 cases an endoscopically assisted microscopic approach was used.Primary biochemical remission after surgery was achieved in 59 cases (73%) at 1 year after surgery. However, only 41 patients (51%) remained in primary surgical remission (without any adjuvant treatment) at their last follow-up appointment, indicating a recurrence rate of 31% (18 of 59 patients) over the duration of follow-up (mean 100 ± 61 months). Long-term remission rates for pure endoscopic and endoscopically assisted cases were not significantly different (48% vs 52%, p = 0.6). Similarly, no significant difference in long-term remission was detected between primary surgery and repeat surgery (54% vs 33%, p = 0.22).Long-term remission was significantly influenced by extent of resection, cavernous sinus invasion (radiologically as well as surgically reported), and preoperative and early postoperative GH and IGF-1 levels (within 24–48 hours after surgery) as well as by clinical grade, with lower remission rates in patients with dysmorphic features and/or medical comorbidities (grade 2–3) compared to minimally symptomatic or silent cases (grade 1).CONCLUSIONSThe long-term surgical remission rate appears to be significantly less than “early” remission rates and is highly dependent on the extent of tumor resection. The authors advocate a long-term follow-up regimen and propose a clinical grading system that may aid in predicting long-term outcome in addition to the previously reported anatomical factors. The role of repeat surgery is highlighted.

A Case of Pituitary Adenoma Producing both Growth Hormone(GH) and Adrenocorticotropic Hormone(ACTH).

1991 ◽  
Vol 38 (3) ◽  
pp. 271-278 ◽  
Author(s):  
KAZUNORI ARITA ◽  
TOHRU UOZUMI ◽  
SATOSHI KUWABARA ◽  
KAZUTOSHI MUKADA ◽  
KEIICHI KAWAMOTO ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Pituitary Adenoma ◽  
Adrenocorticotropic Hormone

Medulloblastoma in childhood: results of radical resection and low-dose neuraxis radiation therapy

1986 ◽  
Vol 64 (2) ◽  
pp. 238-242 ◽  
Author(s):  
Tadanori Tomita ◽  
David G. McLone
Keyword(s):  
Radiation Therapy ◽  
Radiation Dose ◽  
Posterior Fossa ◽  
Carbon Dioxide Laser ◽  
Posterior Inferior Cerebellar Artery ◽  
Radical Resection ◽  
Subtotal Resection ◽  
Total Resection ◽  
Resection Group ◽  
Cerebellar Peduncles

✓ This review concerns 22 children who were treated from 1980 through 1983 for medulloblastoma in the posterior fossa. Treatment included attempts at radical resection of the tumor and postoperative craniospinal radiation therapy, with 5000 to 5500 rads directed to the posterior fossa and 2500 rads to the remaining craniospinal axis. This lower radiation dose to the neuraxis was used to avoid late adverse effects upon the growing central nervous system of the children. Gross confirmation of total resection was obtained in 13 patients (the “total resection group”); however, nine patients had a subtotal resection leaving a small portion of the tumor extending into the cerebellar peduncles or the cerebellopontine angle, or else encasing the posterior inferior cerebellar artery (the “subtotal resection group”). Six patients in the total resection group demonstrated tumor extension into the cerebellar peduncles, which was removed by means of a surgical carbon dioxide laser without neurological sequelae. Biopsy of the arachnoid membrane from the cisterna magna and cytological examination of the cerebrospinal fluid (CSF) prior to manipulation of the tumor werecarried out in 12 patients. All but one showed dissemination of medulloblastoma cells. Myelography and CSF cytological study were undertaken 2 months after radiation therapy in 12 patients and were positive in two. There were no case mortalities in the total resection group during the 24- to 67-month follow-up period, whereas the 1-year survival rate in the “subtotal resection group” was only 44.4%. This study suggests that medulloblastoma can be controlled with a low radiation dose to the neuraxis, should a grossly confirmed total resection be achieved at craniotomy.

scholarly journals Impact of Extent of Resection on Incidence of Postoperative Complications in Patients With Glioblastoma

Neurosurgery ◽  
2019 ◽  
Vol 86 (5) ◽  
pp. 625-630 ◽  
Author(s):  
Dimitri Laurent ◽  
Rachel Freedman ◽  
Logan Cope ◽  
Patricia Sacks ◽  
Joe Abbatematteo ◽  
...  
Keyword(s):  
Extent Of Resection ◽  
Magnetic Resonance Images ◽  
Gross Total Resection ◽  
Subtotal Resection ◽  
Total Resection ◽  
Resection Group ◽  
Patient Safety Indicators ◽  
Hospital Acquired Conditions ◽  
Hospital Acquired ◽  
The Impact

Abstract BACKGROUND Extent of resection (EOR) is well established as correlating with overall survival in patients with glioblastoma (GBM). The impact of EOR on reported quality metrics such as patient safety indicators (PSIs) and hospital-acquired conditions (HACs) is unknown. OBJECTIVE To perform a retrospective study to evaluate possible associations between EOR and the incidence of PSIs and HACs. METHODS We queried all patients diagnosed with GBM who underwent surgical resection at our institution between January 2011 and May 2017. Pre- and postoperative magnetic resonance images were analyzed for EOR. Each chart was reviewed to determine the incidence of PSIs and HACs. RESULTS A total of 284 patients met the inclusion criteria. EOR ranged from 39.00 to 100%, with a median of 99.84% and a mean of 95.7%. There were 16 PSI, and 13 HAC, events. There were no significant differences in the rates of PSIs or HACs when compared between patients stratified by gross total resection (EOR ≥ 95%) and subtotal resection (EOR < 95%). The odds of encountering a PSI or HAC were 2.5 times more likely in the subtotal resection group compared to the gross total resection group (P = .58). After adjusting for confounders, the odds of encountering a PSI or HAC in the subtotal resection group were 3.9 times greater than for the gross total resection group (P < .05). CONCLUSION Gross total resection of GBM is associated with a decreased incidence of PSIs and HACs, as compared to subtotal resection.

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