Αρχειοθήκη ιστολογίου

Τετάρτη 3 Φεβρουαρίου 2021

Clinical Impact of Adherence to NCCN Guidelines for Biomarker Testing and First-Line Treatment in Advanced Non-Small Cell Lung Cancer (aNSCLC) Using Real-World Electronic Health Record Data

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Abstract

Introduction

Although clinical guidelines are broadly available, the relationship between adherence and outcomes is not well studied. This study aimed to assess the association between adherence to National Comprehensive Cancer Network (NCCN) guidelines and clinical outcomes for adult patients with advanced non-small-cell lung cancer (aNSCLC).

Methods

This was a retrospective cohort study of adult patients with aNSCLC (stages IIIB, IIIC, and IV) from a de-identified real-world database. The objective was accomplished in a two-step analysis process. We first assessed adherence to NCCN recommendations for biomarker testing and overall survival (OS). Next, we assessed adherence to NCCN-recommended first-line therapy and time to treatment discontinuation (TTD). Multivariable Cox regression analyses were conducted to evaluate the association between guideline adherence and patient outcomes. Kaplan–Meier analyses were used to assess median OS and TTD.

Results

A total of 28,784 patients with a diagnosis for aNSCLC between January 1, 2011 and July 31, 2019 met the inclusion criteria for the analysis of NCCN-recommended biomarker testing adherence. Two-thirds of these patients (n = 19,787) had evidence of biomarker testing (adherent). Multivariable Cox models found that testing-adherent patients had a significantly lower risk of mortality [hazard ratio (HR) = 0.89, 95% confidence interval (CI) 0.86, 0.92; p < 0.01]. Median OS was modestly longer in the testing-adherent group compared to the testing-non-adherent group (15.4 vs. 14.2 months; p < 0.01). For the first-line therapy analysis, 15,898 patients met the inclusion criteria, of which 69.9% had evidence of appropriate first-line therapy (first-line-adherent). The multivariable Cox model found that adherent patients had significantly lower risk of treatment discontinuation versus non-adher ent patients (HR = 0.60, 95% CI 0.57, 0.62; p < 0.01). First-line-adherent patients had a modest, yet significantly longer median TTD compared to first-line-non-adherent patients (3.45 vs. 2.40 months; p < 0.01).

Conclusions

Improved clinical outcomes were observed in patients who were adherent to NCCN-recommended biomarker testing and first-line therapy. This study demonstrated the value of following NCCN guideline recommendations and the need to prioritize timely access to biomarker testing and individualized treatment.

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Gastrointestinal dysfunction in movement disorders

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Abstract

Purpose of review

This article provides an overview of the clinical presentation, investigations, and treatment options for gastrointestinal tract (GIT) dysfunction in patients with Parkinson's disease (PD) and other movement disorders.

Recent findings

GIT dysfunction commonly appears as constipation and fecal incontinence (mostly overflow, accompanied with sphincter failure in multiple system atrophy [MSA]). Bowel dysfunction (underactive) occurs irrespectively from the site of the neurologic lesion, which is in contrast to site-dependent bladder dysfunction (brain, overactive; periphery, underactive). GI emergencies may arise, including intestinal pseudo-obstruction, intussusception, volvulus, and stercoral ulcer (ulcer of the colon due to pressure and irritation resulting from severe, prolonged constipation). Bowel function tests in neurologic patients often show a combination of slow transit and anorectal dysfunction. Management for slow transit constipation includes bulking agents, softening agents, yogurt/probiotics, and prokinetic agents. Suppositories, botulinum toxin injections, and transanal irrigation are options for managing anorectal constipation.

Conclusions

Function of the bowel is commonly affected in PD and other movement disorders. Neurologists play an important role in assessing bowel symptoms in their patients and planning treatment strategies, often in collaboration with specialist teams.

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Headache Gauge: a real-life calendar-based tool for headache monitoring

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Abstract

Background

This study aimed to validate a semi-quantitative composite score tool, "Headache Gauge" (HG), to monitor the treatment effect in primary headaches in everyday clinic practice, adjustable to any chosen timeframe.

Method

A cohort validation study of HG was performed in primary headache patients, recovering their clinical data and patient-related outcome measures (PROMs) for headache (HIT-6, MIDAS, HURT), work impact (WPAIQ), quality-of-life (SF-12), and mood (STAI, ZUNG). HG score distribution, its relation to clinical variables, its internal consistency, and its convergent validity were determined.

Results

HG was plotted in 233 patients: 90.1% females, age average 37 years, 86% with migraine, 27% with chronic headaches, and 28% with medication overuse. HG ranged from 0.21 to 58.3 in this sample, higher in chronic headaches (HG 16) and medication overuse (HG 15). HG presented good concurrent validity, significantly correlating with HIT-6 (p < 0.0001), SF-12 (p = 0.001), WPAIQ (p < 0.0001), MIDAS (p < 0.0001), and HURT (p < 0.0001). Good sensitivity to change (p < 0.001) and moderate test-retest reliability (p = 0.001) were calculated after reassessment of 147 patients (63.1% of the initial sample).

Conclusions

Headache Gauge is a clinical data-based outcome measure that conceptually translates the percentage of lost time to headache in any given timeframe. It relates to headache impact, therefore bearing the potential to be relevant in real-life clinical monitoring.

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The protean manifestations of central nervous system IgG4-related hypertrophic pachymeningitis: a report of two cases

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Abstract

Background

IgG4-related hypertrophic pachymeningitis is a relative newly recognized and rare manifestation of IgG4-related disease, an immune-mediated fibroinflammatory tumefactive disorder. Fewer than 80 patients have been reported in the literature, and it can mimic common neurosurgical conditions. We describe the clinical presentation of two patients that were initially considered to have a subdural collection, tuberculous meningitis, and a cervical spinal meningioma, but were eventually diagnosed with this disease.

Case presentation

Two ethnic Chinese men, 86 and 62 years old, experienced a 4-week history of headache. Both patients had a history of autoimmune disease, namely glomerulonephritis and Grave's disease, respectively. Magnetic resonance brain imaging revealed diffuse dural thickening with the latter patient exhibiting homogeneous and intense gadolinium-contrast enhancement. Since the 86-year-old patient also had progressive bilateral visual loss, giant cell arteritis was suspected and a 2-week course of glucocorticoid therapy was prescribed, but his symptoms failed to improve. The 62-year-old patient also had accompanying low-grade fever and was treated empirically as having tuberculous meningitis although there were no confirmatory microbiological findings. This patient further developed right hemiparesis, and additional imaging revealed a C4/5 intradural-extramedullary contrast-enhancing lesion resembling a meningioma causing cord compression. Both patients underwent neuros urgical intervention with the former undergoing a dural biopsy and the latter having the cervical lesion resected. The final diagnosis was IgG4-related hypertrophic pachymeningitis with the hallmark histological features of lymphoplasmacytic infiltration of IgG4+ plasma cells, storiform fibrosis, and obliterative phlebitis. In addition, their serum IgG4 levels were elevated (i.e., > 135 mg/dL). Both patients received at least 6 months of glucocorticoid therapy while the latter also had azathioprine. Their symptoms improved significantly and recurrent lesions were not detected on follow-up imaging.

Conclusions

A high index of suspicion for this condition is suggested when a male patient with a history of autoimmune disease and compatible radiological findings, experiences subacute headache that is disproportionate to the degree of dural involvement. Neurosurgeons should consider early meningeal biopsy to establish a definitive histological diagnosis in order for early effective immunosuppressive treatment to be initiated and to avoid unnecessary morbidity.

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Neutral endopeptidase depletion decreases colon cancer cell proliferation and TGF-β1 synthesis in indirect co-cultures with normal colon fibroblasts

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Abstract

Purpose

Although recent studies have suggested that neutral endopeptidase (NEP) is implicated in the regulation of colon cancer (CC) cell growth and metastasis, the influence of the tumor microenvironment on this role of NEP has not been investigated so far. Normal colon fibroblasts (NCFs) constitute a component of the stroma surrounding a tumor in an early stage of its development. NCFs can influence transformed cells via different paracrine factors, including TGF-β1. This in vitro study was undertaken to evaluate the role of NEP in CC promotion in conditions of indirect co-culture of CC cells (LS180 and SW620) with NCFs (CCD-18Co) or their conditioned medium (CM-18Co).

Methods

We examined cell proliferation (with the BrdU assay) and invasiveness (using BME-coated inserts, 8 µm) of NEP-expressing, NEP-silenced (siRNA), and NEP-inhibited (with thiorphan, i.e. a NEP specific inhibitor) CC cells cultured alone or co-cultured with CCD-18Co or with their conditioned medium. The Western blot and ELISA methods were used to assess the level of TGF-β1.

Results

The results showed that the co-culture of the NEP-depleted CC cells with NCFs or their conditioned medium resulted in a significant decrease in cell proliferation in comparison with the proliferative potential of NEP-silenced/inhibited CC cells cultivated alone. In contrast, the NEP depletion did not influence the invasiveness of CC cells in the co-cultures. The co-culture of CC cells with CCD-18Co or CM-C18Co resulted in increased synthesis of TGF-β1, while the NEP downregulation decreased the synthesis of TGF-β1 in CC cells and abolished the stimulatory effect of the co-cultures on TGF-β1 production.

Conclusions

The results suggest that the expression of NEP by colon cancer cells is essential for their proliferation and TGF-β1 synthesis during paracrine interactions with NCFs.

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Τρίτη 2 Φεβρουαρίου 2021

Cholecystoduodenal fistula presenting with upper gastrointestinal bleeding: A case report.

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Cholecystoduodenal fistula presenting with upper gastrointestinal bleeding: A case report.

World J Clin Cases. 2021 Jan 16;9(2):410-415

Authors: Park JM, Kang CD, Kim JH, Lee SH, Nam SJ, Park SC, Lee SJ, Lee S

Abstract
BACKGROUND: Cholecystoduodenal fistula is a rare complication of cholelithiasis. Symptoms are usually non-specific and often indistinguishable from those of etiologic diseases, but it rarely presents as severe gastrointestinal bleeding. Bleeding associated with cholecystoduodenal fistula usually requires surgery because significant bleeding from the cystic artery is unlikely to be resolved by conservative management or endoscopic hemostasis.
CASE SUMMARY: We report a case of cholecystoduodenal fistula that presented with hematemesis which was diagnosed by endoscopy and computed tomography. Endoscopic hemostasis could not be achieved, but surgical treatment was successful. Additionally, we have presented a literature review.
CONCLUSION: Cholecystoduodenal fistula should be considered as differential diagnosis when a patient with history of gallstone disease presents with gastrointestinal bleeding.

PMID: 33521109 [PubMed]

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Rare case of fecal impaction caused by a fecalith originating in a large colonic diverticulum: A case report.

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Rare case of fecal impaction caused by a fecalith originating in a large colonic diverticulum: A case report.

World J Clin Cases. 2021 Jan 16;9(2):416-421

Authors: Tanabe H, Tanaka K, Goto M, Sato T, Sato K, Fujiya M, Okumura T

Abstract
BACKGROUND: Fecal impaction is defined as a large mass of compacted feces in the colon and has the potential to induce a serious medical condition in elderly individuals. Fecal impaction is generally preventable, and early recognition of the typical radiological findings is important for making an early diagnosis. The factors that lead to fecal impaction are usually similar to those causing constipation. Few cases with fecal impaction associated with a diverticulum have been reported.
CASE SUMMARY: We present the case of a 62-year-old woman who suffered from abdominal pain and vomiting, had a medical history of repeated acute abdomen and was diagnosed with fecal impaction in the descending colon based on X-ray and computed tomography (CT) imaging. After examination by gastrografin-enhanced colonography following colonoscopy and CT colonography, the fecalith was suspected to have been produced at the site of a large diverticulum in the transverse colon. The fecalith was surgically resected, and a histological diagnosis of pseudodiverticulum was made. There was no recurrence during 33 mo of follow-up.
CONCLUSION: This case highlights the importance of accurate identification and treatment of a fecal impaction. This case indicated that the endoscopic evacuation and subsequent colonography were effective for identifying a diverticulum that might have caused fecal impaction. A fecal impaction was associated with the diverticulum. Consequently, the planned diverticulectomy was performed. Appropriate emergency medical treatment and maintenance treatments should be selected in such cases to prevent recurrence.

PMID: 33521110 [PubMed]

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Intravitreal dexamethasone implant - a new treatment for idiopathic posterior scleritis: A case report.

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Intravitreal dexamethasone implant - a new treatment for idiopathic posterior scleritis: A case report.

World J Clin Cases. 2021 Jan 16;9(2):422-428

Authors: Zhao YJ, Zou YL, Lu Y, Tu MJ, You ZP

Abstract
BACKGROUND: Posterior scleritis is one of the most easily missed and misdiagnosed diseases in ophthalmology. In this case we treated a patient with intravitreal dexamethasone implant that has not been extensively studied before.
CASE SUMMARY: A 40-year-old female patient who had anxiety, palpitation, and insomnia presented with eye pain and decreased vision in the left eye. An eye examination indicated that her visual acuity (VA) was 40/100. Her left eye presented conjunctival edema, mild exophthalmos, clear cornea, KP(-), and clear aqueous humor. In the fundus, there was a cinerous retinal protuberance. Ultrasonography showed "T-sign" and no systemic association was detected in laboratory examination. One month after injection of dexamethasone implant, the patient exhibited VA of 20/20, fundus serous retinal detachment disappeared, and intraocular pressure of both eyes was at the normal level.
CONCLUSION: Intravitreal injection of dexamethasone implant may be a safe and effective treatment for patients with idiopathic posterior scleritis.

PMID: 33521111 [PubMed]

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Inflammatory myofibroblastic tumor successfully treated with metformin: A case report and review of literature.

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Inflammatory myofibroblastic tumor successfully treated with metformin: A case report and review of literature.

World J Clin Cases. 2021 Jan 16;9(2):429-435

Authors: Liang Y, Gao HX, Tian RC, Wang J, Shan YH, Zhang L, Xie CJ, Li JJ, Xu M, Gu S

Abstract
BACKGROUND: Inflammatory myofibroblastic tumor (IMT) is a distinct tumor with a low incidence rate, which can be diagnosed at any age with a predilection for children and adolescents. Although IMT is visible in any tissues and organs, it is more commonly found in the lungs. The clinical and radiological manifestations of IMT lack specificity, hence resulting in frequent misdiagnosis. Surgical resection is currently the main therapeutic approach for IMT. Only scarce cases of IMT treated with metformin have been reported. Here we report the case of an IMT patient with partial penile resection treated with metformin.
CASE SUMMARY: A 1-year-old boy was born with a shorter penis, and his foreskin could not be completely turned over. When he was 6 month old, a well-circumscribed mass on the glans was found, while it did not attract the attention of his parents. The mass gradually increased in size over time before he was admitted to the hospital, where physical examination was performed. It was revealed that the glans hidden behind the foreskin had a mass with a diameter of about 4 cm surrounding the penis. The mass appeared to be hard with a smooth surface and poor mobility. The two testicles examined at the bottom of the scrotum were revealed to have a normal size. Magnetic resonance imaging showed a tumor with rich blood supply encircling the cavernosum with a size of 3.5 cm × 2.1 cm × 2.0 cm. A thick urinary line was found without urine dripping, urgency, and urodynia. Surgical treatment was performed. During the operation, it was observed that the mass had surrounded and invaded the c avernosum without obvious boundaries, and that the tumor occupied about one-half of the penis cross-section as well as infiltrated more than one-half of the glans. In addition, the tumor had caused urethral invasion and anterior urethrostenosis. With the intention of keeping the glans and cavernosum, the tumor at the anterior urethra was partially removed, leaving about 30% of the tumor mass. Pathology analysis demonstrated that the tumor was rich in spindle cells with infiltration of inflammatory cells. Immuno-histochemistry analysis indicated that the cells were positive for CD4, CD99, Ki67, BCL2, and CD68, and negative for ALK, MyoG, S100, SOX10, PR, and EMA. Hence, the tumor was diagnosed as IMT. Metformin was prescribed for the patient after the operation, following which an oral dose of 7 mg/kg was given three times a day after meals. Three months later, it was observed that the remaining tumor had completely disappeared and that the urination process from the urethra opening had resumed normal. In addition, there were no side effects observed. There was also no tumor recurrence. The growth and development of the boy were unaffected as a result of the treatment.
CONCLUSION: The tumor was observed to have completely disappeared after treatment with metformin. Our finding is of great significance to facilitate future clinical treatment with IMT.

PMID: 33521112 [PubMed]

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Neonatal isovaleric acidemia

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Neonatal isovaleric acidemia in China: A case report and review of literature.

World J Clin Cases. 2021 Jan 16;9(2):436-444

Authors: Wu F, Fan SJ, Zhou XH

Abstract
BACKGROUND: Isovaleric acidemia (IVA) is a rare autosomal recessive inherited organic acidemia caused by a genetic deficiency of isovaleryl-CoA dehydrogenase (IVD). Its morbidity is low, but mortality is high. There is no effective cure for this disease. Early identification of IVA using clinical features can significantly slow disease progression and reduce mortality. Here we report a Chinese neonate with two mutations of IVD and share valuable information on this disease.
CASE SUMMARY: A 12-day-old male neonate with "poor response for 1 d and repeated convulsions accompanied by high muscle tension for 6 h" was hospitalized. The patient was the first child of nonconsanguineous ethnic Chinese parents. He was delivered by cesarean section due to breech position at 39 + 1 wk of gestation with a birth weight of 3.27 kg. Initially, he suffered from dyspnea and rhinobyon, and at 10 d after birth the patient suddenly developed poor feeding, low response, lethargy and seizures. Organic acid analysis of blood and urine by tandem mass spectrometry and gas chromatography mass spectrometry showed extremely high concentrations of isovaleryl glycine. The patient had an acute episode of IVA causing severe metabolic stress and eventually died.
CONCLUSION: A new case of an IVA patient carrying c.1193G>A (p.Arg398Gln) and c.1208A>G (p.Try403Cys) mutations is reported in China.

PMID: 33521113 [PubMed]

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Malignant solitary fibrous tumor of the greater omentum: A case report and review of literature.

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Malignant solitary fibrous tumor of the greater omentum: A case report and review of literature.

World J Clin Cases. 2021 Jan 16;9(2):445-456

Authors: Guo YC, Yao LY, Tian ZS, Shi B, Liu Y, Wang YY

Abstract
BACKGROUND: Malignant solitary fibrous tumors (SFTs) account for 15%-20% of all SFTs, and malignant SFTs arising from the greater omentum are extremely rare. Most malignant SFTs of the greater omentum are diagnosed via pathological examinations after surgery. In this study, we report a case of malignant omental SFT and review the published literature on this rare malignancy.
CASE SUMMARY: A 64-year-old female presented with an abdominal mass, and underwent exploratory surgery, during which a huge tumor originating from the greater omentum and intraperitoneal implants were identified and resected. The results of the pathological examination, immunohistochemistry staining, and gene sequencing led to the diagnosis of malignant SFT of the greater omentum. The patient died one and a half years later due to tumor recurrence and metastasis.
CONCLUSION: This is the first report of the application of gene sequencing in the diagnosis of malignant SFTs of the greater omentum.

PMID: 33521114 [PubMed]

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