We report a very rare case of sellar and suprasellar atypical teratoid rhabdoid tumor (ATRT) in a 42-year-old female patient. The tumor was removed subtotally with a transsphenoidal approach. Histopathologic study showed rhabdoid cells with prominent nucleoli and abundant cytoplasm. Immunohistochemistry for INI1 was completely negative in the tumor cells, consistent with ATRT. After surgery, sh...

Rhabdoid melanoma is an aggressive, rare variant of melanoma. Herein, we describe a case rhabdoid and review the clinicopathological features this neoplasm. A 59-year-old Caucasian female presented with large cavitary wound located on her right posteromedial upper torso. Light microscopy lesion revealed patternless sheeting neoplastic cells cytoplasm containing eosinophilic inclusions periphera...

A nine-year-old male beagle dog had a white spherical mass in the subcutis of the left lumbar region. Microscopically, spindle to oval cells diffusely proliferated in the fibrous and myxoid stroma. Many neoplastic cells showed rhabdoid features or vacuolated cytoplasm. Immunohistochemically, the neoplastic cells were positive for vimentin and S100 and partly positive for neuron-specific enolase...

Glomerular sparing (GS) is defined as a unique growth pattern in which tumor cells replace the majority of renal tubes and overrun intact glomeruli. This phenomenon has been well recognized by pathologists as a typical infiltrative pattern and some studies suggested it was an independent risk factor. Here, we study the clinical, pathological, and immunohistochemical features of primary kidney n...

primary sarcoma of the breast is very rare and constitutes less than 1% of all breast cancers. herein, we report a case of pleomorphic rhabdomyosarcoma (prms) of the right breast in a 49-year-old female patient presented with a mass (7 cm × 6.5 cm). mammography and ultrasonography suspected a malignant lesion and a diagnosis of poorly differentiated carcinoma was made on fine needle aspiration ...

BACKGROUND Malignant extrarenal rhabdoid tumor of the gastrointestinal tract is rarely reported in the literature. It is characterized by poor prognosis and aggressive metastatic features. A literature review evidenced only 19 cases, with poor outcome. CASE PRESENTATION We report a case of a colonic "pure" malignant extrarenal rhabdoid tumor with metastatic nodes in a 65-year-old Caucasian ma...

Sir, – Atypical teratoid rhabdoid tumor (AT/RT) is a rare tumor that predominates in infancy. It is an aggressive tumor with dismal outcome. We report a case of AT/ RT in a 44-year-old female who presented with headache. The tumor was localized in the right occipital lobe. Gross total resection, chemotherapy, and radiotherapy were administered, and the patient is alive 9 months since diagnosis ...