Differential diagnosis of submucosal gastric tumors: gastric schwannomas misdiagnosed as GISTs.

Schwannomas commonly occur in the head and neck region but are rarely seen in the gastrointestinal tract; the stomach and small intestine are the most commonly involved sites. These tumors are usually misdiagnosed as gastrointestinal stromal tumors (GISTs) before histopathological confirmation due to radiological similarity. GI schwannomas show positivity for S100 protein and vimentin but are negative for CD 117 and CD 34, which helps in differentiating the tumor from GISTs.

Axillary Peripheral Nerve Schwannoma: A Rare Occurrence in the Torso.

A schwannoma is a benign, solitary, noninvasive, and encapsulated tumor that originates from Schwann cells of the peripheral nerve sheath commonly found in the head and neck. A rare case of a benign schwannoma in the axillary region of a 34-year-old male patient is presented here accompanied by a discussion on the known entities of peripheral nerve schwannoma as well as the clinical and radiological findings coupled with treatment techniques. The patient presented with a left axillary mass of seven years gradually progressing in size which is associated with pain in the left arm.

Primary Thyroid Diffuse Large B-Cell Lymphoma: A Case Report.

Primary thyroid lymphoma is rare. Hashimoto's disease is usually found as a risk factor. Among thyroid lymphoma, diffuse large B-cell lymphoma (DLBCL) is the most aggressive and frequent one.

Diffuse Type Pancreatic Ductal Adenocarcinoma: The Linitis Plastica Type of the Pancreas.

Pancreatic malignant tumors are diverse and characterized by aggressive nature with high mortality rates. Pancreatic ductal adenocarcinoma (PDAC) is the most common type of pancreatic malignant tumors and accounts for approximately 90% of pancreatic malignancies. A subtype of PDAC, diffuse type PDAC (DTP), is a very rare and underreported tumor, known for its aggressive traits.

[Neck lumps: Early Detection with Dental Magnetic Resonance Imaging?].

Cervical lymphadenopathy can indicate a range of diseases, including infections, inflammation, and neoplastic processes. Accurate diagnosis is crucial for identifying the underlying cause and determining appropriate treatment. Diagnostic procedures include clinical examination, ultrasound, fine needle aspiration, biopsy, and imaging techniques.

Thyroid involvement in cystic echinococcosis: a systematic review.

Background: Thyroid Hydatid Cyst (THC), a pathological state induced by the larval form of Echinococcus granulosus, represents a multifaceted clinical entity with nonspecific symptoms, making both diagnosis and treatment intricate. The current understanding of THC's attributes is somewhat limited. To gain a broader perspective on the disease's clinical and epidemiological characteristics, we have systematically reviewed the existing literature.

Feasibility of Using Needle Rinse Fluid for Cobas Human Papillomavirus (HPV) Assay in Diagnosing HPV+ Oropharyngeal Cancer with Neck Lymph Node Aspiration.

Background: Human papillomavirus (HPV) is a crucial prognostic factor in oropharyngeal cancer (OPC). p16 is a surrogate marker for diagnosing HPV+ OPC, however it is not direct evidence of HPV existence.

Objective: The purpose of our study was to evaluate an HPV DNA test-Cobas HPV assay-in diagnosing HPV+ OPC through neck lymph node aspiration.

Efficiency of Fine-Needle Aspiration (FNA) in Relation to Tru-Cut Biopsy of Lateral Neck Swellings.

Background Lateral neck masses have always been difficult to diagnose without proposing a differential diagnosis. Fine-needle aspiration (FNA) was proposed to be a cost-effective method and less invasive than a tru-cut biopsy and may provide a provisional diagnosis in relation to cytopathology. FNA has also been shown to improve the diagnosis of neck masses such as cervical lymphadenopathy, neck cysts, and parotid masses, whether malignant or benign.

Esophageal schwannoma mimicking non-functional parathyroid adenoma on Tc-sestamibi imaging: a case report.

Technetium-99m sestamibi single-photon emission computed tomography/computed tomography (Tc-sestamibi SPECT/CT) is a mainstay of the pre-operative localization of parathyroid lesions. We report here the case of a 30 year-old woman with a fortuitously discovered 2 cm cervical mass for which a parathyroid origin was originally suspected due to its retro-thyroidal localization and a personal history of nephrolithiasis. Normal serum calcium and parathyroid hormone (PTH) levels excluded primary hyperparathyroidism, raising suspicion of a non-functional parathyroid adenoma, and SPECT/CT imaging showed that the mass was Tc-sestamibi-avid.

Ultrasound-Enhanced Fine-Needle Biopsy Improves Yield in Human Epithelial and Lymphoid Tissue.

Objective: Needle biopsy is a common technique used to obtain cell and tissue samples for diagnostics. Currently, two biopsy methods are widely used: (i) fine-needle aspiration biopsy (FNAB) and (ii) core needle biopsy (CNB). However, these methods have limitations.