Publications by authors named "Rehan Mohsin"

Article Synopsis
  • The study aimed to assess the effectiveness of two ultrasound techniques, resistive index (RI) and shear wave elastography (SWE), in detecting chronic changes in kidney transplants compared to biopsy results.* -
  • Conducted with 154 kidney transplant patients, the research found that SWE demonstrated higher sensitivity and specificity than RI for identifying chronic allograft damage, with SWE achieving an impressive diagnostic accuracy of 95.45% versus RI's 81.16%.* -
  • The findings suggest that SWE may be a more reliable method for early detection of kidney transplant complications, potentially improving patient care and outcomes.*
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Objective: To determine the outcomes of robotic surgeries using the Da Vinci robotic surgical system (DVSS) at Pakistan's largest urological tertiary healthcare system.

Study Design: Descriptive study. Place and Duration of the Study: Department of Minimally Invasive and Robotic Surgery, Division of Urology, Sindh Institute of Urology and Transplantation, Karachi, Pakistan, from March 2017 to December 2021.

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Article Synopsis
  • - UPJO is a serious kidney condition that requires early diagnosis and treatment; the study focuses on the effectiveness of robot-assisted laparoscopic pyeloplasty (RALP) for treating this condition.
  • - Conducted at the Sindh Institute of Urology and Transplant, the study involved 46 patients, analyzing early post-operative outcomes like operative time, hospital stay, and blood loss after RALP surgery performed by an experienced surgeon.
  • - Results showed favorable outcomes, with a mean hospital stay of 1.19 days and total operative time averaging 64.58 minutes, supporting RALP as a superior technique compared to traditional methods in treating UPJO.
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Objectives: We present our experience with and data about a very rare neoplasm of the kidney, squamous cell carcinoma (SCC).

Methods: A total of 14 patients with a diagnosis of SCC were identified on the basis of a retrospective analysis of medical records of patients who underwent surgery for renal cancers between 2015 and 2021 at the Sindh Institute of Urology and Transplantation. IBM SPSS v25 was used to record and analyze data.

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In this study, patients, who underwent excision of retroperitoneal mass following chemotherapy for testicular cancers from 2006 to 2016, were studied and followed till 2021. The clinical and oncological outcomes were measured. Among 338 patients, who were treated for TC during the entire study period, 38 (11.

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We sought to describe the development of the robotic urology program at Sindh Institute of Urology and Transplantation (SIUT) and the feasibility of transitioning from the da Vinci to Versius robotic systems. The SIUT robotics program began in 2017 utilizing the da Vinci Si robotic system, transitioning to the Versius system in 2021. Retrospective review of our quality assurance database was performed.

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Objective:  To compare the drop in eGFR after nephron-sparing surgery in T1 and T2 renal tumours.

Study Design:  Descriptive study.

Place And Duration Of Study:  Department of Uro-oncology, Sindh Institute of Urology, and Transplantation Karachi, from March 2020 to March 2021.

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To report a case of chondrosarcoma of right big toe with left orbital and left infra temporal metastases. Chondrosarcoma is the second most frequent primary malignant tumour of the bone. A 56 year old man had history of trauma on his right big toe, which was amputated and the biopsy in 2011 at Sindh Institute of Urology and Transplantation (SIUT) revealed chondrosarcoma with clear margins.

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Objectives: Laparoscopic donor nephrectomy has become the criterion standard for kidney retrieval from living donors. There is no information on the experience and outcomes of laparoscopic donor nephrectomy in Pakistan. The objective of the study was to identify benefits and harms of using laparoscopic compared with open nephrectomy techniques for renal allograft retrieval.

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Kidney paired exchange is an established method of overcoming incompatibility in donor-recipient pairs and expanding the living-donor pool. It is infrequently performed in developing countries. We report the first kidney paired exchange in Pakistan, successfully performed at our center.

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Background: The Glutathione S-transferases (GSTs) genes deletion polymorphisms have been associated with the progression of several cancers. The association studies between the 2 GSTs (GSTM1 and GSTT1) null polymorphisms with the susceptibility to renal cell carcinoma (RCC) have been inconclusive. Therefore, with the inclusion of our own data, we performed a comprehensive meta-analysis to assess the association between these 2 polymorphisms and the risk of RCC.

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Background: Renal cell carcinoma (RCC) is the most frequent form of kidney cancer in adults. Somatic mutations that inactivate the von Hippel-Lindau (VHL) gene are the most common cause of RCC. The frequencies of molecular changes in the VHL gene in RCCs vary among different populations.

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Primary malignant lymphoma of the male external genitalia is extremely rare and it is even rarer in the penis. Because of its rarity, the possibility of delay in diagnosis and mismanagement is always there. It can present as a nodule, non-healing ulcer, stricture urethra or periurethral abscess.

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Purpose: To determine the pattern and outcome of renal tumors in young adults in a large surgical series in Pakistan.

Materials And Methods: We retrospectively analyzed 133 young adults (age: ≥ 16 to ≤ 40 years) with 136 renal tumors, who underwent surgical treatment for suspected renal cancer from 1994 till 2010. The clinical and pathological parameters were determined and their impact on final outcome was analyzed.

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Objectives: To evaluate the outcomes of patients with muscle invasive bladder cancer managed by trimodality protocol with assessment of factors that may predict treatment response, risk of recurrences and survival of such patients in our population.

Methods: A prospective, single arm study was conducted between July 2006 and December 2009 at the Sindh Institute of Urology and Transplantion, Karachi. One hundred and sixteen patients with muscle invasive bladder cancer T2-T3N0M0 were treated with concurrent chemoradiation (total dose 6500 cGy) after maximal transurethral resection.

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Background: There is no data on the histopathological characteristics of renal tumours in young adults in Pakistan.

Materials And Methods: We retrospectively analysed 133 young adults (age: 16 to ≤40 years) who underwent nephrectomy for suspected renal cancer from 1994 till July 2010. The demographical and pathological parameters were determined from original surgical biopsy reports and case files, and analysed.

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Article Synopsis
  • Whole-pelvis concurrent chemoradiation (CCRT) is the standard approach for treating invasive bladder cancer, but this study compares it with bladder-only CCRT to see if similar results can be achieved.
  • The study included 230 patients, randomly assigning 120 to whole-pelvis CCRT and 110 to bladder-only CCRT, analyzing factors like toxicity, compliance, and survival rates over a median follow-up of 5 years.
  • Results indicated that bladder-only CCRT has comparable bladder preservation, disease-free survival, and overall survival rates to whole-pelvis CCRT, suggesting it could be a viable option to reduce side effects in eligible patients.
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Peripheral primitive neuroectodermal tumor/Ewing's sarcoma (PNET/EWS) is primarily a tumor of soft tissues and bones. Primary localization of PNET/EWS in genitourinary organs is rare. No data on this localization of PNET/EWS are available in literature from Pakistan.

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Aims: Vascular endothelial growth factor (VEGF) protein plays an important role in tumor development and progression. Polymorphisms in the VEGF gene may lead to over- or underexpression of the protein and may be associated with either risk or progression of malignancy. The aim of this case-control study is to identify and quantify the correlation between VEGF polymorphisms and renal cell carcinoma (RCC).

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Aim: To determine the feasibility and safety of high dose rate intraluminal brachytherapy (HDR-ILBT) boost during preoperative chemoradiation for rectal cancer.

Methods: Between 2008 and 2009, thirty-six patients with locally advanced rectal cancer (≥ T3 or N+), were treated initially with concurrent capecitabine (825 mg/m(2) oral twice daily) and pelvic external beam radiotherapy (EBRT) (45 Gy in 25 fractions), then were randomized to group A; HDR-ILBT group (n = 17) to receive 5.5-7 Gy × 2 to gross tumor volume (GTV) and group B; EBRT group (n = 19) to receive 5.

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Adrenal myelolipoma is a rare and benign tumour composed of mature adipose tissue and haematopoietic elements that resemble bone marrow. It is mostly discovered incidentally on imaging of abdomen done for non adrenal related reasons or at autopsy. Usually asymptomatic, but has been reported to present with symptoms such as flank pain resulting from tumour bulk, necrosis or spontaneous retroperitoneal haemorrhage.

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