Publications by authors named "Maseeh uz-Zaman"

Article Synopsis
  • - The study aimed to evaluate disease-free survival (DFS) and progression-free survival (PFS) in nasopharyngeal cancer patients after chemoradiation, focusing on those with complete and partial metabolic responses as measured by PET/CT scans.
  • - Results indicated that patients with a complete metabolic response had significantly better DFS (60.157 months) compared to the PFS of those with partial response (8.145 months), with certain factors like SUVmax and tumor size being linked to poorer outcomes.
  • - Key findings showed 84% of responders experienced DFS with a low recurrence rate, while non-responders had more disease progression, and no significant predictors for PFS were identified among non-responders.
View Article and Find Full Text PDF

Background: For the initial staging of breast cancer (BC), 18FDG PET/CT is recommended by professional guidelines in stage III (except T3N1) and inflammatory BC (T4d) and optional when conventional imaging is equivocal or suspicious. However, growing evidence also supports its role in the staging of intermediate-risk groups (IIA, IIB, T3N1 of IA). This study aimed to compare the impact of 18FDG PET/CT with conventional imaging (CT-chest+abdomen+pelvis and bone scan; CT-CAP+BS) in staging, cost-effectiveness, and radiation exposure in the initial staging of BC.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to determine the prognostic value of imaging and tumor markers in predicting progression-free survival (PFS) in patients with untreated pancreatic cancer using baseline PET/CT scans.
  • Conducted in Pakistan, the research included 68 pancreatic cancer patients from 2017 to 2020, analyzing their treatment outcomes based on their initial imaging and tumor characteristics.
  • Results indicated a median PFS of 18 months, with significant predictors for disease progression identified as Stage IV cancer and higher levels of certain markers (SUVmax >5.3 and CA 19-9 >197 U/ml).
View Article and Find Full Text PDF

Introduction: Postgraduate medical trainees (PGs) in developing nations face various educational hurdles due to limited access to quality resources and training facilities. This study aimed to assess the effectiveness of e-learning, particularly Massive Open Online Courses (MOOCs), within postgraduate medical education. It involved the development of a customized online course focused on osteoporosis for PGs and an examination of their perspectives and preferences concerning online learning methods like Virtual Learning Environment (VLE) platforms.

View Article and Find Full Text PDF

Background:  In the current era vaccine-associated lymphadenopathy (VAL) is not an uncommon presentation on 18F-FDG PET/CT examinations in patients inoculated with Coronavirus disease 2019 (COVID-19) vaccination. In this study, we are presenting data of VAL on 18F-FDG PET/CT regarding its prevalence, temporal response to vaccination and imaging characteristics of VAL.

Methods: Seventy-eight (78) consecutive vaccinated breast cancer (BC) patients who had 18FDG PET/CT were retrospectively analyzed.

View Article and Find Full Text PDF

 The purpose fo this prospective study was to find the impact of primary tumor size (Ts), standardized uptake values (SUVmax) of primary tumor, and the most avid neck node on disease recurrence in patients with head and neck oropharyngeal squamous cell carcinoma (HNOP-SCC).  We included patients with HNOP-SCC (without distant metastasis-M0 disease) who had pre- and post-treatment F-18 fluorodeoxyglucose positron emission tomography/computed tomography ( FDG PET/CT) using strict standardized imaging protocol from 2017 to 2019. Based on follow-up ( FDG PET/CT) findings, patients were categorized as disease free (no or minimal FDG uptake ≤ background over surgical bed and no distant metastasis) and disease recurrence ( FDG uptake > background over surgical bed with or without nodal and/or distant metastasis).

View Article and Find Full Text PDF
Article Synopsis
  • "Null" often refers to the absence of value or a non-existent state in programming and databases.
  • In various contexts, it signifies something void or empty, lacking any meaningful content.
  • The concept of "null" can also relate to philosophical discussions about existence and meaning.
View Article and Find Full Text PDF

Neurolymphomatosis (NLS) is infiltration of lymphoma cells into the peripheral or cranial nervous system and is a rare manifestation of non-Hodgkin lymphoma (NHL). Nerve biopsy is considered as the gold standard for diagnosis but not a preferred choice, and magnetic resonance imaging has lower reported sensitivity. F-Fluorodeoxyglucose (FDG) positron-emission tomography and computerized tomography (PET/CT) has a higher sensitivity for diagnosing and assessing the neurological and nonneurological metabolic tumor volume and response evaluation to therapy.

View Article and Find Full Text PDF
Article Synopsis
  • - The study investigated progression-free survival (PFS) and recurrence predictors in patients with diffuse large B-cell lymphoma (DLBCL) who showed a negative interim PET/CT scan, with a focus on a group that achieved a complete metabolic response (CMR).
  • - Conducted from December 2015 to February 2020, it included 185 DLBCL patients, finding that 66% maintained sustained CMR while 34% experienced recurrence, with a median PFS of 34 months.
  • - The analysis indicated that only the highest standardized uptake value (SUVmax) from the initial scan, specifically values over 22.6, significantly predicted disease recurrence, emphasizing the need for ongoing monitoring for at-risk
View Article and Find Full Text PDF
Article Synopsis
  • Carcinoma of unknown primary (CUP) is a condition where tumor metastases are present but the primary source is unidentified, and this study aimed to assess the detection effectiveness of FDG PET/CT scans in such patients.
  • Conducted at Aga Khan University Hospital, the study examined 46 patients with CUP, using FDG PET/CT scans to locate potential primary tumor sites, followed by biopsies of those areas.
  • The results indicated that FDG PET/CT had a detection rate of 57%, sensitivity of 68%, and positive predictive value (PPV) of 76%, proving to be a useful tool for identifying the primary tumor in patients with CUP.
View Article and Find Full Text PDF

Background: Precise staging of esophageal cancer (EC) is important for selection of optimal treatment option and prognostication. Aim of this study was to assess the role of 18FDG PET/CT in staging and response evaluation to neoadjuvant chemoradiation (nCR) in EC patients using standardized imaging protocol. Material and methods: This prospective study was conducted at PET/CT Section of Department of Radiology, Aga Khan University Hospital Karachi, Pakistan from July 2017 till February 2018.

View Article and Find Full Text PDF
Article Synopsis
  • - This study examined the metabolic responses of lymphoma patients through PET/CT scans, focusing on standard imaging protocols and comparing results from baseline to interim scans taken during chemotherapy.
  • - Out of 112 patients, 97 were included, with a majority showing no significant demographic differences between those who responded well to treatment and those who didn’t.
  • - Results indicated that while overall predictors for metabolic response were not significant, a correlation was found specifically between baseline SUV (standardized uptake value) and tumor size in responders.
View Article and Find Full Text PDF

Meaningful change in bone mineral density (BMD) should be equal or higher than institutional least significant change (LSC). But some facilities use vendor's LSC which is discouraged by International Society for Clinical Densitometry (ISCD). The aim of this study was to find the impact of scan interpretation upon interval BMD changes using vendors and institutional LSCs.

View Article and Find Full Text PDF

This prospective study was carried out to find the negative predictive value of various Duke Treadmill Scores (DTSs) in patients with normal myocardial perfusion imaging (MPI). This study was conducted from August 2012 to July 2015, and 603 patients having normal exercise MPIs were included. Patients were followed for 2 years for fatal myocardial infarction (FMI) and nonfatal myocardial infarction (NFMI).

View Article and Find Full Text PDF

Tumor thrombosis is a relatively uncommon complication of renal cell carcinoma (RCC), and its diagnosis has therapeutic and prognostic implication. Computerized tomography (CT) is the primary imaging modality for staging RCC, but it has low sensitivity to differentiate between tumor thrombus and bland or benign thrombus. 18-fluorodeoxyglucose positron emission tomography/CT (PET/CT) has a limited role in diagnosis and staging of RCC, but its diagnostic accuracy is considerably high for detection of metabolically active tumor thrombus.

View Article and Find Full Text PDF
Article Synopsis
  • * Current imaging methods for detecting prostate cancer metastasis have low sensitivity, making it difficult to accurately stage the disease or monitor recurrence after treatment.
  • * New Gallium-68 PSMA PET imaging shows higher diagnostic accuracy and is promising for both staging and treatment of prostate cancer, opening avenues for personalized therapeutic approaches.
View Article and Find Full Text PDF