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497 articles
May 20268
A Rare Case Report of Renal Hilar Teratoma Associated With a Well-Differentiated Neuroendocrine Tumor and High-Grade Upper Urinary Tract Urothelial Carcinoma.
A 70-year-old man presented with a renal hilar mature teratoma, which contained a well-differentiated neuroendocrine tumor alongside a high-grade upper urinary tract urothelial carcinoma.
Congenital Rapidly Progressive Perianal Embryonal Rhabdomyosarcoma With Spindle Cell Morphology: A Rare Presentation.
A 2-day-old male infant presented with a painless perianal swelling that progressively enlarged over two months. MRI revealed a 4.7 × 2.7 × 2.5 cm heterogeneous mass in the perineum extending into the pelvis.
Endometrial Endometrioid Carcinomas With Signet Ring Cells: Report of a Case Series With Detailed Clinical, Pathologic, and Molecular Analysis.
This case series described five patients aged 53–89 years who presented with postmenopausal bleeding and had endometrioid-type endometrial carcinomas containing signet ring cells.
NF2 -mutated Renal Cell Carcinoma: Clinicopathologic and Molecular Characterization of Two Additional Tumors Highlighting Morphologic Heterogeneity and Potential Aggressive Behavior.
Two female patients in their sixth decade presented with incidental solid renal masses measuring 3.2 cm and 3.0 cm. Both tumors exhibited high-grade nuclei and infiltrative growth, but with distinct architectural…
Retroperitoneal Schwannoma with a Novel PRCC::TFE3 Fusion: Expanding the Spectrum of Schwannomas with a TFE3 Gene Rearrangement.
A patient presented with a large retroperitoneal schwannoma characterized by a PRCC::TFE3 fusion. Histological examination revealed large epithelioid cells with granular cytoplasm, alongside degenerative features…
Illustrating the "Quiet Genome" Concept of SMARCA4 -Deficient Uterine Sarcoma Via Whole-Exome Sequencing: A Highly Aggressive Case in a Young Woman.
A 23-year-old woman presented with a uterine mass larger than 15 cm. Histology showed undifferentiated epithelioid cells with rhabdoid features and focal phyllodes-like architecture, without a carcinomatous component.
Adenomatoid Tumor of the Uterus With Marked Nuclear Atypia: A Case Report Including Next-Generation Sequencing Analysis and Review of the Literature.
A 51-year-old woman presented with multiple uterine nodules during a total abdominal hysterectomy for leiomyomas. Histological examination revealed an adenomatoid tumor with marked nuclear atypia, characterized by…
Rosai-Dorfman Disease of the Breast: A Case Series and Review of the Literature.
Three women aged 22 to 71 years were diagnosed with Rosai-Dorfman disease of the breast, presenting with palpable masses or an incidental finding on imaging.
April 202616
Mucinous cystic neoplasm of the liver with biliary prolapse mimicking intraductal papillary neoplasm of the bile duct: a case report.
A 39-year-old woman receiving fertility treatment presented with recurrent hyperbilirubinemia and predominantly cholestatic liver test abnormalities.
SMARCA4-deficient undifferentiated tumor in the oral cavity: a rare case report and review of the literature.
A 66-year-old man presented with a rapidly enlarging mass in the left posterior maxillary mucosa, accompanied by bone destruction.
Hypervascular solid-appearing serous cystadenoma as a mimic of nonfunctioning pancreatic neuroendocrine tumour: a systematic review.
This PRISMA-aligned systematic review examined solid-appearing serous cystadenomas (SCA) that can mimic nonfunctioning pancreatic neuroendocrine tumours (NF-pNET), synthesizing comparative imaging cohorts separately…
Multimodal Ultrasound Characterization of a Testicular Leydig Cell Tumor With Emphasis on Microvascular Flow Imaging Findings: A Case Report and Literature Review.
A patient presented with a right testicular mass detected during routine preconception screening. Multimodal ultrasound, including color Doppler flow imaging and Microvascular Flow Imaging, revealed unique peripheral…
A Primary Dedifferentiated Melanoma, Masquerading as a Soft Tissue Sarcoma, Displaying BRAF p.V600E, CDKN2A, TP53 , and TERT Promoter Mutations.
A 55-year-old woman presented with a slowly growing mass in the right popliteal region, initially diagnosed as synovial sarcoma.
Diffuse CD30-Positive Cutaneous Infiltrate in a Clinically Suspected Hidradenitis Suppurativa Lesion: Histopathologic and Diagnostic Challenges.
A 38-year-old male presented with a lesion in the left axilla, initially diagnosed as hidradenitis suppurativa (HS) and unresponsive to antibiotics.
When Small Cells Matter: Diagnosing Bladder Small Cell Carcinoma on Urine Cytology.
A 68-year-old man presented with painless hematuria, leading to the detection of small cell carcinoma of the bladder (SCCB) on voided urine cytology.
Peritoneal Mesonephric-Like Adenocarcinoma Arising in Endometriosis: Case Report and Review of the Literature Expanding the Spectrum of Extrauterine Mesonephric-Like Adenocarcinomas.
A 55-year-old woman with a history of endometriosis presented with peritoneal mesonephric-like adenocarcinoma (MLA) infiltrating the bowel wall, along with nodal and hepatic metastases.
Primary Prostatic Alveolar Rhabdomyosarcoma in Adult, a Diagnostic Pitfall: Report of an Extremely Rare Tumor.
A 30-year-old man presented with acute urinary retention and an indurated prostatic mass. Despite a normal serum prostate-specific antigen level, imaging revealed pelvic lymph node and vertebral metastases, along with a…
Mesothelial Cell Inclusions in Abdominal and Thoracic Lymph Nodes in Association With Recurrent Chylothorax in a Young Man: A Diagnostic Pitfall.
A 19-year-old man presented with bilateral chylothorax, mediastinal lymphadenopathy, and extensive venous thrombosis, prompting concern for malignancy.
Endometrial Gastrointestinal Mucinous Metaplasia With Goblet Cells and KRAS Mutation-Report of Two Patients and Review of Literature.
Two postmenopausal patients presented with endometrial polyps exhibiting gastrointestinal mucinous metaplasia characterized by goblet cells.
Diagnostic Pitfalls and Imaging-Pathologic Correlation in Benign Breast Vascular Lesions Mimicking Malignancy: A Case-Based Systematic Review.
This systematic review examined benign breast vascular tumors that can mimic malignancy, analyzing clinical, imaging, and pathological features.
Clear Cell Renal Cell Carcinoma With Lipocyte-Like Features in a Multifocal Renal Tumor: Possible Morphological Sign of Tumor Regression?
We report a rare occurrence of clear cell renal cell carcinoma (RCC) with an unusual morphology resembling white adipose tissue.
Keratoameloblastoma: unusual keratinization in ameloblastoma: a case report and review of literature.
A 69-year-old man presented with a mandibular radiolucent lesion. Imaging showed a large unilocular radiolucency extending from the ramus to the distal aspect of tooth #30.
Primary Inflammatory Myofibroblastic Tumour of the Breast: A Potential Diagnostic Pitfall on Aspiration Cytology.
A 47-year-old woman presented with a painless right breast mass. Imaging showed a well-defined lobulated soft-tissue lesion categorised as BI-RADS 4A.
Gastroblastoma With MALAT1 :: GLI1 Fusion Gene in an 18-Year-Old Man: A Case Report and Literature Review.
An 18-year-old man was found to have a gastroblastoma, a rare biphasic neoplasm. Histology showed predominantly epithelioid cells in nests, cords, glands, and rosette-like structures, with focal spindle cells and rare…
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