Publications by authors named "Muhammad N Zahir"

Background And Aim: Docetaxel, oxaliplatin, leucovorin and 5-fluorouracil (FLOT) may improve overall survival (OS) in patients with locally advanced gastric and gastroesophageal cancer. Our study aims to determine the pathological response in these patients with the FLOT chemotherapy in the Neoadjuvant setting. This is the first study conducted in our country.

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Background: Squamous cell carcinoma of the head and neck have been characterized using various prognostic parameters. These include advanced age, lifestyle habits such as smoking, higher tumor stage at presentation & presence of metastasis. Many patients are diagnosed with head and neck cancers annually in Pakistan, but limited data is available for the prognosis of these patients.

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Background And Aim: Diffuse large B-cell lymphoma (DLBCL) has been classified using various parameters, including the site of origin. Studies have reported conflicting outcomes when DLBLC patients were stratified according to the site of origin. This study aimed to investigate the response rate and survival outcomes in nodal versus extranodal DLBCL and compare the results to a region-matched study covering the 1988 - 2005 period.

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Introduction And Importance: Myoepithelial carcinomas are a diverse group of tumors exhibiting myoepithelial differentiation. There have been increasing reports of extra-salivary sites of origin for myoepithelial carcinomas such as soft tissues, bone and visceral areas. Due to this entity's rarity, definite diagnostic and treatment parameters are somewhat limited.

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Background: Breast cancer is the most common malignancy in women, affecting over 1.5 million women every year, which accounts for the highest number of cancer-related deaths in women globally. Hereditary breast cancer (HBC), an important subset of breast cancer, accounts for 5-10% of total cases.

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Schwannoma is a rare tumor that arises from the Schwann cells, which are specialized, myelin-producing cells of the peripheral nerve sheaths. As anatomic logic would dictate, these masses commonly occur in the skull base, cerebellopontine angle, and posterior spinal roots. Of this already rare entity, rarer still are the pleural schwannomas, representing approximately 1-2% of thoracic tumors.

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Background:  Capecitabine is a prodrug of 5-fluorouracil (5-FU) and is converted to 5-FU in tumor tissue. Its primary mechanism of action is the suppression of DNA synthesis via inhibition of thymidylate synthetase. It is mostly used for neoadjuvant chemoradiation, adjuvant chemotherapy for colorectal cancer, metastatic breast, and localized and metastatic gastric cancer, among others.

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Background: Cancer related thrombosis not only increases morbidity and mortality but also poses a significant financial burden on health care system. Risk of venous thromboembolism (VTE) in these patients substantially increases with the addition of chemotherapy. Lately, cisplatin has been implicated as an independent factor.

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Background: Pancreatic cancer is the fourth leading cause of cancer related death with median survival ranging from 3 to 6 months for metastatic disease. Palliative chemotherapy has been the backbone of treatment in advanced stage and has evolved over time. Data pertaining to the disease are scarce from our part of the world where treatment poses a significant challenge due to lack of resources.

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Article Synopsis
  • Cytogenetic abnormalities are linked to various cancers, particularly in leukaemias and lymphomas, with specific changes like t(1;14) and trisomy 4 being notable.
  • A rare case involving a young patient with both T-cell acute lymphoblastic leukaemia and acute myeloid leukaemia is presented, featuring unusual cytogenetic abnormalities including the t(1;14) translocation and trisomy 4.
  • This case may be the first documented instance of a patient having two types of blood cancers alongside these specific chromosomal changes.
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Article Synopsis
  • A study of 131 patients showed that early onset colorectal carcinoma (CRC) represents 32% of all CRC cases, primarily affecting younger individuals with an average age of 33.3 years and a higher prevalence in males.
  • Most patients had either colon (55%) or rectal (45%) cancers, with a significant difference in treatment rates: 96% of rectal cancer patients received appropriate therapy compared to 65% of colon cancer patients.
  • The findings suggest that rectal carcinoma may be a more aggressive form of CRC at a young age, as indicated by a trend of poorer survival rates for these patients two years post-diagnosis.
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Background: Carcinoma of the male breast is responsible for less than 1% of all malignancies in men but the incidence is rising. Invasive ductal carcinoma is the most common histological subtype while invasive lobular carcinoma is responsible for only 1.5% of the total cases of which pleomorpic lobular carcinoma is an extremely rare variant.

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Background: Ewing's sarcoma uncommonly arises from extraosseous soft tissue or parenchymal organs. Primary adrenal Ewing's Sarcoma, although very rare, is extremely aggressive and commonly fatal.

Case Presentation: A 17 year old Pakistani male was referred to the outpatient oncology clinic at our center with a three month history of concomitant pain, swelling and dragging sensation in the right hypochondrium.

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Introduction: Cisplatin is a platinum compound that has revolutionized the treatment of various solid organ tumors. Cisplatin is associated with a variety of side effects and has recently been indicted in the development of posterior reversible encephalopathy syndrome. Posterior reversible encephalopathy syndrome is a potentially reversible condition, with the mainstay of therapy being correction of the underlying cause and withdrawal of the offending drug.

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