Prediction of villin expression and tumor behavior in colorectal cancer.

Background: Colorectal cancer is one of the most common cancers and the leading cause of cancer-related deaths worldwide. The incidence is gradually increasing, and the mortality and recurrence rates of the disease remain high.

Methods: This study was conducted as a cross-sectional study using tissue samples of 106 patients who underwent surgery at Sina Hospital from 2021 to 2022.

Evaluation of phosphatase and tensin homologue (PTEN) expression in gastric cancer and its relationship with histopathological findings.

Introduction: Phosphatase and tensin homologue (PTEN) is an important tumour suppressor in multi-step tumorigenesis. To establish the role of PTEN in gastric cancer progression, we examined the PTEN expression degree in gastric cancer tissues. We also explained the connection between PTEN expression and histopathological findings.

Rare gastrointestinal presentation of systemic mastocytosis, a case report.

Introduction: Systemic mastocytosis is a rare disease resulting from infiltration of atypical mast cells in multiple organ systems and present with variety of symptoms. Primary appendiceal and cecal mass with isolated abdominal pain as a presenting feature in systemic mastocytosis have not been reported in literature up to now.

Case Report: We described a 69- years-old female with systemic mastocytosis who presented with chronic abdominal pain and recent progression.

Postrenal Azotemia in a Gastric Cancer Patient Revealed the Coincidence of Ureteral Metastasis and Contralateral Ureteral Stone: A Case Report.

Metastatic ureteral masses are not rare, but isolated ureteral metastasis from the origin of gastric cancer is rare. Ureteral metastasis is usually unilateral and does not lead to postrenal azotemia unless in single kidney patients. Herein, we describe an 80-year-old man with a history of nonmetastatic gastric cancer who presented with postrenal azotemia due to the coincidence of right distal ureteral metastasis and left distal ureteral stone.

GIST case turned out to be a perforated peptic ulcer: a case report.

Gastrointestinal stromal tumors (GISTs) are tumors arising from the fourth layer of the stomach. They are the most common form of mesenchymal neoplasms in the gastrointestinal tract. The diagnosis for the aforementioned tumors is made through endoscopic ultrasonography (EUS) with no further inspection through biopsies and aspirations.

Intra-cranial Chondroma: A Case Report and Problematic Diagnosis.

Introduction: Chondroma is a benign cartilaginous tumor. It is found very rarely in the head and neck.

Case Presentation: This report describes a 25-year-old woman who presented with generalized headache from 4 months ago.

Postoperative Extra-Cranial Metastasis of Glioblastoma: A Case Report.

Glioblastoma (WHO grade IV) is the most common malignant tumor of neural tissues in adults as a primary tumor. Because of blood brain barrier and short median survival of patients with glioblastoma, metastasis of this tumor is very rare. A 46-year-old man was admitted to Sina hospital with chief complaint of headache and visual impairment.

A Rare Case of Metastasis of Renal Clear Cell Carcinoma to the Thyroid Gland, Presenting as a Goiter Nodule, Three Years After Nephrectomy.

Thyroid gland metastatic tumors are rare in clinical practice. Clear cell RCC is one of common metastatic tumors to thyroid. We here reported a case of incidentally found clear cell renal carcinoma metastasis to the thyroid gland 3 years after nephrectomy, in the thyroidectomy procedure performed for the patient due to the thyroid enlargement caused by multinodular goiter.

Adult cerebellopontine angle ependymoma presenting as an isolated cisternal mass: A case report.

Introduction: Ependymomas represent approximately 2%-8% of all primary intracranial brain tumors. The occurrence of extra-axial posterior fossa ependymomas in adults is rare.

Case And Outcomes: We report a case of extra-axial cerebellopontine (CP) angle ependymoma in an adult patient, managed through gross total resection (GTR) and adjuvant radiotherapy.

Serum protein electrophoresis pattern in patients living with HIV: frequency of possible abnormalities in Iranian patients.

Background And Objectives: This prospective case-control study was conducted to evaluate abnormal serum protein electrophoresis (SPEP) patterns in patients living with human immunodeficiency virus (HIV) and its relation with disease severity markers and anti-retroviral treatment status.

Materials And Methods: Thirty-seven HIV-positive patients and 24 healthy individuals were evaluated in the course of this study. The healthy HIV-negative individuals were selected as control group.

A Rare Case of Serous Papillary Ovarian Epithelial Type Carcinoma in Testis: A Rare Testicular Neoplasm.

Ovarian epithelial type carcinomas of testis are an extremely rare group of tumors, a few cases of which having been reported. We present the case of a 67-year-old man, presented with testicular mass and inflation, who underwent radical orchiectomy and pathological and immunohistochemical assessments revealed serous papillary carcinoma of ovarian epithelial type tumor of testis.

Multiple High Grade Rhabdoid Papillary Meningiomas Mimicking Choroid Plexus Carcinoma: A Case Report.

Rhabdoid papillary meningioma is an uncommon aggressive variant of meningioma which has the potential to metastasize and spread throughout the brain and even out of the cranium. Herein, we present recurrence of the brain tumor in a 26-year-old woman. The patient had history of the surgery for two lesions in the right temporal lobe and the left cerebellopontine angle.

Diagnostic Accuracy of Fine Needle Aspiration Cytology versus Concurrent Core Needle Biopsy in Evaluation of Intrathoracic Lesions: a Retrospective Comparative Study.

Background: Transthoracic fine needle aspiration (FNA) cytology and core needle biopsy (CNB) are two commonly used approaches for the diagnosis of suspected neoplastic intrathoracic lesions. This study compared the diagnostic accuracy of FNA cytology and concurrent CNB in the evaluation of intrathoracic lesions.

Materials And Methods: We studied FNA cytology and concurrent CNB specimens of 127 patients retrospectively, using hematoxylin and eosin (H and E), immunohistochemistry, and, on certain occasions cytochemistry.