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Byline: Kelu. Sreesanth, Subhash. Soni, Vaibhav. Varshney, Ashok. Puranik, Pradeep. Bhatia Background: Although fast-track treatment pathways are well established in colorectal surgeries, their role in oesophageal resections has not been [...]

In this paper, we detect Unstable Periodic Orbits (UPOs) of both self-excited and hidden attractors using the Damped Newton–Raphson–Mees algorithm. This study answers one of the long-standing questions about the size of a hidden attractor. We observe that the UPOs of the self-excited attractor are spread in a thick region within the phase space at varying distances from the fixed point, whereas the UPOs of hidden attractors are confined to a thin layer. This reveals details concerning the size of a hidden attractor. We demonstrate this for a hidden attractor without a fixed point and for a hidden attractor with a single stable fixed point. To compare the results with self-excited attractors, we have taken Lorenz and Rössler attractor as examples. [ABSTRACT FROM AUTHOR]

Echinococcal liver cysts are predominantly located in the right lobe of the liver and are mostly asymptomatic. A frank intra-biliary rupture (IBR) of hydatid cyst is uncommon, having variable clinical presentation and treatment options. We present a case of a 60-year-old male patient who presented with pain in the upper abdomen associated with vomiting but without jaundice. On investigations, he was diagnosed to have a left lobe hepatic hydatid cyst (HHC) with IBR for which left hepatectomy with bile duct exploration was performed. It highlights the benign nature of the disease for which seldom major hepatectomies have to be performed. [ABSTRACT FROM AUTHOR]

Mucinous adenocarcinoma of jejunum is a rare tumor of the gastrointestinal tract. Patients usually present after fifth decade of their life with non-specific symptoms. Delayed diagnosis is commonplace and often the reason for advanced disease and poor prognosis. These tumors may masquerade as other common malignancies, with a conclusive diagnosis only after the final histopathological examination. We present a case of jejunal mucinous adenocarcinoma, disguised as cecal malignancy, in an old female patient, managed with radical resection and adjuvant chemotherapy. The report reiterates that the mucinous variant of jejunal adenocarcinoma is a rare pathology with an unusual advanced presentation. [ABSTRACT FROM AUTHOR]

Background: Gangliocytic paraganglioma (GP) is a rare tumor that most commonly arises from the duodenum and is characterized pathologically by 3 cell types: epithelioid, spindle, and ganglion cells. GP is often difficult to differentiate from a neuroendocrine tumor on the basis of preoperative imaging, and the diagnosis is based on final histopathologic and immunohistochemical analysis. Case Report: We report the case of a 28-year-old male who presented with pain in the abdomen, bilious vomiting, and weight loss. Imaging showed a mass involving the first and second part of the duodenum that was likely a neuroendocrine or gastrointestinal stromal tumor. He underwent robotic-assisted pancreatoduodenectomy, and the final pathology report identified GP with lymph node metastasis. The patient was doing well at 1-year follow-up. Conclusion: GP is often a histologic surprise as most cases are diagnosed in postoperative histopathology. While GP has a more benign course than a neuroendocrine tumor, radical surgical resection is warranted in cases of diagnostic dilemma, suspicion of malignancy, or lymph node metastasis. Robotic-assisted pancreatoduodenectomy is a feasible option. [ABSTRACT FROM AUTHOR]

Background: Esophageal carcinosarcoma is an uncommon histologic variant of esophageal malignancy, occurring in approximately 0.5% to 2.8% of patients. Esophageal carcinosarcoma usually involves the middle and lower esophagus and consists of both epithelial and mesenchymal components. Case Report: A 54-year-old male presented with painless progressive dysphagia associated with loss of weight for 2 months. Esophagogastroduodenoscopy suggested an ulceroproliferative polypoidal growth in the lower thoracic esophagus. Biopsies from the growth showed leiomyosarcoma with tumor cells immunopositive for vimentin, h-Caldesmon, and smooth muscle actin and negative for pan-cytokeratin. Imaging suggested a heterogeneously enhancing polypoidal growth arising in the lower third of the esophagus. Thoracoscopic-assisted McKeown esophagectomy with gastric pull-up and standard 2-field lymphadenectomy was performed. Aminor epithelial component was identified on final pathologic examination in addition to the leiomyosarcoma found on the preoperative biopsy. This epithelial component was invasive squamous cell carcinoma and was positive for pan-cytokeratin and p40, both of which were negative in the sarcomatous component. The patient received 4 cycles of adjuvant chemotherapy (carboplatin and paclitaxel).However, he developed a recurrence in the left cervical lymph node 4 months after adjuvant treatment and died 2 months after the diagnosis of recurrence. Conclusion: Carcinosarcoma can be easily missed in the presence of predominantly sarcomatous components even on immunohistochemical analysis. These tumors may be associated with poor prognosis and may have early recurrence despite surgery and adjuvant treatment. [ABSTRACT FROM AUTHOR]

Our study aimed to enhance the understanding of Land Surface Temperature (LST) dynamics and its impact on environment using remote sensing techniques. By developing LST prediction models based on MODIS data, we analysed both day and night LST patterns in Bharatpur, Rajasthan, India. Multiple evaluation metrics were employed to assess the accuracy of models and performance comprehensive assessment. Our findings revealed valuable insights into the correlation between diurnal LST at different times. Notably, night-time LST predictions exhibited a higher Pearson's correlation coefficient compared to day-time predictions, indicating a stronger linear relationship. The determination coefficient (R2) indicated a good fit between the predicted and test LST. Model selection was guided by the Akaike's Information Criteria (AIC) and Bayesian Information Criteria (BIC). The lower AIC and BIC values associated with night-time LST predictions suggested a better balance between model fit and complexity. Our study contributes to the advancement of remote sensing and climate research through a robust LST model-based prediction framework. The insights gained from our results have implications for various fields including environmental monitoring, urban planning and climate change studies. By improved understanding of LST dynamics, we can make informed decisions and develop effective strategies for sustainable development and resource management. [ABSTRACT FROM AUTHOR]