A systematic review and meta-analysis of diagnostic performance of fluorescein-guided sentinel lymph node biopsy in early breast cancer.

BACKGROUND: Evaluation of axillary lymph nodes status in cN0 axilla is performed by sentinel lymph node biopsy (SLNB) utilizing a combination of radioactive isotope and blue dye or alternative to isotope like Indocyanine green (ICG). Both are very resource-intensive; which has prompted development of low-cost technique of Fluorescein Sodium (FS)-guided SLNB. This systematic review and meta-analysis evaluate the diagnostic performance of FS-guided SLNB in early breast cancer. OBJECTIVES: The objective was to evaluate the diagnostic performance of FS for sentinel lymph node biopsy. METHODS: Eligibility criteria: Studies where SLNB was performed using FS. INFORMATION SOURCES: PubMed, EMBASE, Cochrane library and online clinical trial registers. Risk of bias: Articles were assessed for risk of bias using the QUADAS-2 tool. SYNTHESIS OF RESULTS: The main summary measures were pooled Sentinel Lymph Node Identification Rate (SLN-IR) and pooled False Negative Rate (FNR) using random-effects model. RESULTS: A total of 45 articles were retrieved by the initial systematic search. 7 out of the 45 studies comprising a total of 332 patients were included in the meta-analysis. The pooled SLN-IR was 93.2% (95% confidence interval [CI], 0.87-0.97; 87% to 97%). Five validation studies were included for pooling the false negative rate and included a total of 211 patients. The pooled FNR was 5.6% (95% confidence interval [CI], 2.9-9.07). CONCLUSION: Fluorescein-guided SLNB is a viable option for detection of lymph node metastases in clinically node negative patients with early breast cancer. It achieves a high pooled Sentinel Lymph Node Identification Rate (SLN-IR) of 93% with a false negative rate of 5.6% for the detection of axillary lymph node metastasis.

Efficacy of perioperative systemic tranexamic acid along with topical hemocoagulase in decreasing axillary drain output in breast cancer patients undergoing axillary lymph node dissection: A randomized, double-blind, placebo-controlled, superiority trial.

BACKGROUND: Excess and prolonged axillary drainage is a frequent nuisance following axillary lymph node dissection (ALND) in breast cancer patients. No consensus exists about the best method to prevent this consistently and reliably. Tranexamic acid (TA) has been found to reduce the amount and duration of drainage, but the reduction is not optimal. We hypothesized that systemic administration of TA along with the topical application of hemocoagulase (H) to the axillary dissection bed may decrease the cumulative axillary drain output and shorten the requirement of drainage after ALND as compared to placebo. PATIENT AND METHODS: Seventy women undergoing ALND for breast carcinoma were randomized into two groups, the intervention (TA + H) group and the control (C) group. The cumulative drain output (primary objective), duration of drainage, incidence of seroma formation after drain removal, number of seroma aspirations required, volume of seroma aspirated, and incidence of surgical site infection (SSI) were compared. RESULTS: The mean cumulative output in the TA + H group was significantly lower than the C group (290 ± 200 mL vs. 552 ± 369 mL, p < 0.001). Axillary drains were removed significantly earlier in the TA + H group (6.6 ± 2.2 vs. 11.7 ± 6.0 days, p < 0.001), but the incidence of seroma formation (p = 0.34), number of aspirations required (p = 0.33), volume of seroma aspirated (p = 0.47), and the incidence of SSI (p = 0.07) were similar. CONCLUSIONS: Perioperative systemic administration of tranexamic acid along with topical application of H to the axillary dissection bed is effective in reducing cumulative axillary drain output after ALND. This strategy may also facilitate earlier removal of suction drains.

A Systematic Review and Meta-analysis of Touch Imprint Cytology and Frozen Section Biopsy and Their Comparison for Evaluation of Sentinel Lymph Node in Breast Cancer.

INTRODUCTION: Evaluation of axillary lymph nodes after sentinel lymph node biopsy (SLNB) in breast cancer is mostly done by intra-operative frozen section biopsy (FSB) and/ or touch imprint cytology (TIC). In this systematic review and meta-analysis, we have compared the accuracy of the two modalities. METHODS: PubMed, EMBASE, and Cochrane electronic databases were searched for articles comparing TIC with FSB. Articles were assessed for methodological and reporting quality. The main summary measures were pooled sensitivity, pooled specificity, and diagnostic accuracy using bivariate generalized linear mixed models using random effects. RESULTS: Fourteen studies were included. The pooled sensitivity, specificity, and diagnostic accuracy for FSB were 78%, 100%, and 98.57%. For TIC, the pooled sensitivity, specificity, and diagnostic accuracy were 74%, 98%, and 98.37%. For both methods, visual inspection of summary ROC curves and of forest plots did not show significant heterogeneity. CONCLUSION: TIC showed comparable sensitivity, specificity, and accuracy to FSB and hence can be used as its substitute as a rapid and economical test for the detection of axillary lymph node metastasis during SLNB especially in low-resource settings.

Total vs less than total thyroidectomy for benign multinodular non-toxic goiter: an updated systematic review and meta-analysis.

BACKGROUND: We have performed an updated meta-analysis of randomized controlled trials (RCT) comparing total thyroidectomy (TT) with less than total thyroidectomy (LTT) for benign multinodular non-toxic goiter (BMNG). OBJECTIVES: The objective was to evaluate the effects and outcomes of TT as compared to LTT. METHODS: Eligibility criteria: RCTs comparing TT vs LTT. INFORMATION SOURCES: PubMed, Embase, Cochrane Library and online registers were searched for articles comparing TT with LTT. Risk of bias: Articles were assessed for risk of bias using the Cochrane's revised tool to assess risk of bias in randomized trials (RoB 2 tool). SYNTHESIS OF RESULTS: The main summary measures were risk difference using a random effects model. RESULTS: Five randomized controlled trials were included in the meta-analysis. Recurrence rate was lower for TT compared to LTT. Adverse events like temporary or permanent recurrent laryngeal nerve (RLN) palsy and permanent hypoparathyroidism were similar in both groups except for the rate of temporary hypoparathyroidism which was lower in the LTT group. DISCUSSION: All studies had unclear risk of bias for blinding of the participants and personnel and high risk of bias for certain selective reporting. This meta-analysis did not show any clear benefit or harm of either procedure (TT vs LTT) for goiter recurrence and re-operation rates (for both recurrence and incidental thyroid cancer). However, re-operation for goiter recurrence was significantly higher in the LTT group based on a single RCT. Evidence suggests increased rates of temporary hypoparathyroidism with TT but there was no difference in the rate of RLN palsy and permanent hypoparathyroidism between the two methods. The overall quality of evidence was low to moderate.

Low-Cost Vacuum Assisted Core Needle Biopsy Technique for Breast Lumps.

BACKGROUND: Core biopsy has replaced fine needle aspiration cytology in the assessment of breast lumps to diagnose malignancy and is now standard of care in developed countries. Unfortunately, cost of core biopsy system is a major limitation in low-and middle-income countries (LMICs). This prompted us to devise and appraise a low-cost technique of core biopsy using negative pressure. METHODS: We devised and prospectively evaluated a simple model of core biopsy (vacuum assisted core needle biopsy-VACNB) using a 50 ml syringe, a 10 ml syringe and a 14G needle. RESULTS: 57 consecutive women (median age 42.66 years) with breast lumps (median diameter 5.2 cm) underwent VACNB. The sensitivity for diagnosing malignancy was 92%, specificity was 100%, and diagnostic accuracy was 92.98%. The positive predictive value of this technique was 100%, and negative predictive value was 63.64%. The cost (~ 5.5 USD) of the system was significantly less than the cost of core biopsy needle (~ 41.00 USD) and vacuum assisted breast biopsy needle (~ 341.00 USD) in India. CONCLUSION: Frugal innovations are needed to overcome cost constraints in LMICs. Our low-cost VACNB technique is easy to use and accurate.

Smartphone-Based Application for Tele-follow-up of Patients with Endocrine Disorders in Context of a LMIC: A Compliance, Satisfaction, Clinical Safety and Outcome Assessment.

BACKGROUND: Remote video consultations are increasingly used in clinical practice, and a lot of data are emerging on its feasibility and acceptability. This study aims to bring out qualitative and quantitative data which will enhance our understanding of strengths and limitations of this media in the setting of a low- and middle-income country (LMIC). MATERIALS AND METHODS: This was a prospective study conducted from January 2017 to May 2018, at the Department of Endocrine Surgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow, India. A total of 107 patients were selected who chose remote follow-up care through social media (WhatsApp). Data were analyzed on feasibility, clinical safety, satisfaction and economic burden. RESULTS: A total of 107 postoperative patients were followed up using a social media tool. A total of 396 tele-sessions were held. The average number of tele-consultations per patient was 3.7 (range 2-6). Reasons for tele-follow-up included: confirmation of histology report (n = 92), medication dosage adjustments (n = 148), wound evaluation (n = 102), reporting of serum TSH and serum calcium levels (n = 296) and medical fitness certificate (n = 13). Wound evaluation through tele-follow-up was on par with the outpatient department (OPD) follow-up as no patient had to report to OPD for wound infection. Satisfaction level was excellent in 55% of patients and very good in 25%. 20% of the patients reported an average satisfaction level. If all of these 107 patients would have come to our OPD follow-up, they would have traveled 613.2 miles (908 km) per patient on an average, apart from losing work hours. Average cost and workdays saved per visit were $78 and 5.4 days, respectively. CONCLUSION: Video consultation using social media tools is clinically safe and cost effective. Economic benefits far outweigh the risk of missing an adverse event, especially in the setting of low- and middle-income countries.

Are responses to the pandemic inclusive? A rapid virtual audit of COVID-19 press briefings in LMICs.

Responses to the COVID-19 pandemic may leave many people behind through a variety of exclusion processes as basic information about the virus and its spread is shared with the public. We conduct a rapid virtual audit of pandemic related press briefings and press conferences issued by governments and international organizations in order to assess if responses have been inclusive to the hearing-impaired communities in low- and middle-income countries (LMICs). We analyze COVID-19 press conferences and press briefings issued during Feb-May 2020, for over 123 LMICs and for international organizations (e.g. the World Bank, the International Monetary Fund, the World Health Organization (WHO)). Our virtual audit shows that only 65% of countries have a sign language interpreter (SLI) present in COVID-19 press briefings and conferences. This number is smaller in low-income countries (41%) and Sub-Saharan African countries (54%). Surprisingly, none of the international organizations including the WHO has a SLI present during COVID-19 press briefings. We recommend all countries and international organizations to reconsider ways to make press conferences accessible to a wide audience in general, and to the hearing impaired communities in particular by including a SLI during their COVID-19 briefings, a primary step towards upholding the sustainable development pledge of "no one gets left behind."

A Prelude to Biogermylene Chemistry*.

The biological applications of germylenes remain unrealised owing to their unstable nature. We report the isolation of air-, water-, and culture-medium-stable germylene DPMGeOH (3; DPM=dipyrromethene ligand) and its potential biological application. Compound 3 exhibits antiproliferative effects comparable to that of cisplatin in human cancer cells. The cytotoxicity of compound 3 on normal epithelial cells is minimal and is similar to that of the currently used anticancer drugs. These findings provide a framework for a plethora of biological studies using germylenes and have important implications for low-valent main-group chemistry.

Fiber Bragg grating interrogation using wavelength modulated tunable distributed feedback lasers and a fiber-optic Mach-Zehnder interferometer.

This paper demonstrates a technique of high-resolution interrogation of two fiber Bragg gratings (FBGs) with flat-topped reflection spectra centered on 1649.55 nm and 1530.182 nm with narrow line width tunable semiconductor lasers emitting at 1651.93 nm and 1531.52 nm, respectively. The spectral shift of the reflection spectrum in response to temperature and strain is accurately measured with a fiber-optic Mach-Zehnder interferometer that has a free spectral range of 0.0523 GHz and a broadband photodetector. Laser wavelength modulation and harmonic detection techniques are used to transform the gentle edges of the flat-topped FBG into prominent leading and trailing peaks that are up to five times narrower than the FBG spectrum. Either of these peaks can be used to accurately measure spectral shifts of the FBG reflection spectrum with a resolution down to a value of 0.47 pm. A digital signal processing board is used to measure the temperature-induced spectral shifts over the range of 30°C-80°C and strain-induced spectral shifts from 0 µÏµ to 12,000 µÏµ. The shift is linear in both cases with a temperature sensitivity of 12.8 pm/°C and strain sensitivity of 0.12 pm/µÏµ. The distinctive feature of this technique is that it does not use an optical spectrum analyzer at any stage of its design or operation. It can be readily extended to all types of tunable diode lasers and is ideally suited for compact field instruments and for biomedical applications in stroke rehabilitation monitoring.

Can low-valent germanium chemistry be practiced under ambient conditions? A tale of a water-stable yet reactive germylene monochloride complex.

A germylene monochloride complex ((DPM)GeCl, 1) that is water stable was isolated for the first time. Interestingly, it reacts with cesium fluoride under ambient conditions (non-inert atmosphere and water-containing solvent) to afford water stable germylene monofluoride complex ((DPM)GeF, 2). Due to the usage of DPM (dipyrrinate) ligand, germylene monohalides 1 and 2 show fluorescence in the visible region at 555 and 538 nm, respectively. Compounds 1 and 2 are the first fluorescent germylene complexes and were characterized by multinuclear NMR spectroscopy. The structure of compound 1 was also proved by single crystal X-ray diffraction studies.

Automated cardiac arrhythmia detection techniques: a comprehensive review for prospective approach.

Abnormal cardiac functionality produces irregular heart rhythms which are commonly known as arrhythmias. In some conditions, arrhythmias are treated as very dangerous which may lead to sudden cardiac arrest. The incidence and prevalence of cardiac anomalies seeks early detection of arrhythmias using automated classification techniques. In the past, numerous automated arrhythmia detection techniques have been developed that are based on electrocardiogram (ECG) signal analysis. Focusing on the prospective research in this field, this article reports a comprehensive review of existing techniques that are obtained using search engines such as IEEE explore, Google scholar and science direct. Based on the review, the existing techniques are broadly categorized into two types: machine-learning and deep-learning-based techniques. In this study, it is noticed that the performance of the machine-learning-based arrhythmia detection techniques depend on pre-processing of ECG signal, R-peaks detection, features extraction and classification tools while the deep-learning-based techniques do not require the features extraction step. Generally, the existing techniques utilize Massachusetts Institute of Technology-Beth Israel Hospital arrhythmia database to evaluate the classification performance. The classification performance of automated techniques also depends on ECG data used for training and testing of the classifier. It is expected that the performance should be evaluated using a variety of ECG signals including the cases of inter-patient and intra-patient paradigm. The existing techniques also require to deal with the class-imbalance problem. In addition to this, a specific partition-ratio between training and testing datasets should be maintained for fair comparison of performance of different techniques.

Sentinel lymph node biopsy in early breast carcinoma using fluorescein sodium and methylene blue dye: A validation study.

The availability of radioisotopes for sentinel lymph node biopsy (SLNB) in breast carcinoma is limited in low- and middle-income countries and thus the need for other reliable tracers exists. We aimed to validate the effectiveness of fluorescein sodium (FS) together with methylene blue dye (MBD) for patients with node-negative early breast carcinoma in a prospective cross-sectional study. Patients underwent SLNB using FS and MBD followed by axillary dissection to validate results. Sentinel lymph node (SLN) identification rate and false negative rate were assessed for all three tracers/combinations (MBD, FS, and MBD + FS). We concluded that SLNB using a combination of FS and MBD has an acceptable rate of SLN identification but the addition of FS provided no additional benefit.

A Glove-Based Virtual Hand Rehabilitation System for Patients With Post-Traumatic Hand Injuries.

Recent studies have shown that virtual gamified therapy can be a potential adjunct to conventional orthopedic rehabilitation. However, the off-the-shelf gaming consoles used for virtual rehabilitation pose several practical challenges in deploying them in clinical settings. In this article, we present the design of a portable glove-based virtual hand rehabilitation system (RehabRelive Glove) that can be used at both clinics and homes for physiotherapy. We also evaluate the system's efficacy on patients with post-traumatic hand injuries. Thirty patients were randomly categorized into groups A (virtual rehabilitation) and B (conventional physiotherapy). Both groups received fifteen 25-minute sessions of respective therapy over three weeks. The wrist and finger joints' range of motion (ROM) and grip strength were measured every seven sessions to compare the efficacy. Group A showed about 1.5 times greater improvement in flexion/extension ROM of the wrist compared to Group B. While both groups improved finger ROM and grip strength with time, no significant difference was observed between the groups. The results suggest that the proposed virtual rehabilitation system effectively enables patients with hand injuries to recover ROM faster.

Phyllodes Tumors of the Breast-Experience in a Tertiary Care Center.

Phyllodes tumors (PTs) are rare neoplasms of the breast that are a challenge in clinical practice. Though mostly benign, they are notorious for local recurrence, requiring adjuvant treatments. This study was planned to report the clinicopathological features and outcomes of patients with PT treated at our center. Details of all patients who underwent surgery for PT in the last 6 years (December 2017-December 2023) were obtained from our prospectively maintained database. The demographic, clinical, radiological, pathological, and follow-up details were recorded and analyzed. Statistical analyses were carried out with Jamovi version 2.3.18. Out of 61 suspected PTs by triple assessment, 9 were excluded due to a non-phyllodes diagnosis on histopathology. We included 52 women with a mean age of 38.2 ± 11.0 years, most of whom were premenopausal (57.7%). BI-RADS 4 was the most common finding on radiological assessment (65.4%). Core needle biopsy (CNB) was the most frequently employed modality for histological diagnosis preoperatively (65.4% of cases). Wide local excisions (WLE) and mastectomies were done in 63.5% and 36.5% of patients, respectively. Benign, borderline, and malignant phyllodes constituted 67.3%, 15.4%, and 17.3% of tumors, respectively. Patients undergoing breast conservation surgery (BCS) had a significantly smaller mean tumor diameter than those who underwent a mastectomy (p < 0.001). Overall, the margin positivity rate was 34.6%. Patients undergoing mastectomy developed more local recurrence compared to WLE, although the difference was not significant (p = 0.400). The outcome following surgical excisions of large PTs in terms of margin positivity and local recurrence is the same, irrespective of whether BCS or mastectomy is done. A negative pathological margin width of > 1 mm appears acceptable. Malignant phyllodes with positive margins are associated with a higher rate of recurrence but positive margins in patients with other subtypes may not translate into recurrence, at least in the short term.

Breast carcinoma presenting with upper limb lymphedema - A rare case.

Lymphedema (LE) in a breast cancer patient usually results from axillary lymph node dissection, sentinel lymph node biopsy, and/or axillary radiotherapy. Although lymphatic obstruction and consequent LE can occur due to axillary lymph node involvement, such presentation in breast cancer patients has rarely been reported. This report describes the case of a 50-year-old lady with right breast carcinoma who presented with right upper limb lymphedema. Surprisingly, she did not have any bulky axillary lymphadenopathy that could have accounted for lymphedema of the upper limb, but a suspicious breast mass was present on clinical examination. Diagnosis of breast cancer on clinical examination can be challenging in such patients due to breast edema and careful imaging of the breast and axilla with appropriate imaging tools (mammogram, ultrasound, MRI, PET mammography) should be resorted to before excluding malignancy. Lymphoscintigraphy confirmed the findings of lymphedema in the right upper limb and revealed uptake in the epitrochlear lymph nodes of the contralateral limb suggesting that she might had pre-existing widespread "subclinical lymphedema" which presented as "clinical lymphedema" in right upper limb after axillary lymph node/lymphatic involvement by right breast carcinoma.

Soft Tissue and Lower Limb Muscle Metastases from Breast Carcinoma: An Unreported Entity.

Soft tissue metastasis from carcinoma breast is rare, and still rarer is metastasis to skeletal muscles. So far, soft tissue metastasis from breast carcinoma has been reported only in a small number of case series and case reports. To the best of our knowledge, no case of breast cancer metastasizing to the lower limb muscles has been reported. It is important to differentiate soft tissue metastasis from primary soft tissue malignancy, as the management and prognosis of these differ markedly. Here, we present a case of breast cancer metastasizing to the soft tissue at multiple sites including the right thigh muscles.

Indian surgery Trainee's perspective on surgical ergonomics principles and education: A long road ahead.

INTRODUCTION: This study aimed to determine the baseline knowledge and beliefs, along with the impact of incorporating surgical ergonomics lectures during a residency. METHODS: A cohort of 123 Indian surgical residents participated in this educational intervention, which consisted of two educational webinars on ergonomics. Both pre- and post-intervention surveys were electronically sent to the participants. These included questions related to their demographics, prevalence of musculoskeletal (MSK) symptoms, and factors affecting participant awareness of ergonomic recommendations. RESULTS: Seventy-one residents responded to the pre-webinar survey. Eighty-five percent of respondents reported MSK symptoms, with the most common being pain (70%) and stiffness (40%), which the residents attributed to their surgical training. Forty-six residents completed the post-webinar survey. The majority of respondents strongly agreed or agreed that surgical ergonomic educational sessions improved their understanding of the fundamental causes of MSK symptoms and increased their awareness of options available for prevention MSK injuries. CONCLUSION: The rate of MSK symptoms and/or injury was high among this cohort of surgical residents. These surveys and educational session demonstrated there is limited awareness of the comprehension of ergonomics related to surgical procedures. Our study shows that a simple surgical ergonomic educational intervention can lead to improved understanding of prevention and ergonomic changes.