Cutaneous Spindle Cell Carcinoma is a rare and aggressive form of skin cancer characterized by long, slender (spindle‑shaped) malignant cells that resemble ...

Spindle squamous cell carcinoma (SpSCC) is a rare and aggressive variant of conventional squamous cell carcinoma characterized by the presence of elongated, ...

Craniopharyngiomas are rare, benign tumors that develop near the pituitary gland and the hypothalamus in the sellar–suprasellar region of the brain. While they ...

Mixed Glioneuronal Tumor–Associated Syndrome is a rare neurological condition in which patients develop a spectrum of symptoms and complications related to ...

A hypothalamic pilocytic astrocytoma is a slow-growing brain tumor that arises from astrocytes, which are star-shaped glial cells supporting neurons. Located ...

Pineal parenchymal tumors (PPTs) are a rare group of neoplasms that arise from the specialized cells—pineocytes—within the pineal gland, a small endocrine ...

Langerhans Cell Histiocytosis (LCH) is a rare disorder characterized by an excessive accumulation of specialized immune cells called Langerhans cells in ...

Dysgerminoma is a rare malignant tumor that arises from germ cells of the ovary. Germ cells are the precursors to eggs, and when they transform abnormally, ...

An ependymoma is a type of tumor that arises from ependymal cells, which line the ventricles of the brain and the central canal of the spinal cord. These cells ...

An intracranial germ cell tumor (iGCT) is a rare neoplasm that originates from primordial germ cells—cells destined to become sperm or ova—that aberrantly ...

Germinomas are malignant tumors arising from primordial germ cells, which are embryonic cells destined to become sperm or eggs. While they most frequently ...

Craniopharyngioma is a rare, typically benign (non-cancerous) brain tumor that arises from remnants of Rathke’s pouch, an embryonic precursor of the anterior ...

Gangliogliomas are rare, typically low-grade brain tumors that consist of both neuronal (ganglion) and glial (supporting) cell components. They most often ...

An optic pathway glioma is a type of brain tumor that arises from the glial cells—supportive cells in the nervous system—along the visual pathway, which ...

Hemorrhagic hepatic metastasis occurs when cancer cells spread from a primary tumor elsewhere in the body to the liver and cause bleeding within the metastatic ...

Cavernous hemangioma—also known as cavernous angioma, venous malformation, or cavernoma—is a benign vascular lesion characterized by clusters of dilated ...

Intracerebral hemorrhagic tumors are brain growths that develop abnormal blood vessels or invade surrounding tissues in a way that makes them prone to bleeding ...

Laryngeal cancer is a type of head and neck cancer that originates in the tissues of the larynx (voice box). The intrinsic muscles of the larynx—which include ...

Hepatobiliary cancers are cancers that develop in the liver and the biliary system (which includes the bile ducts and gallbladder). These cancers affect vital ...

A spermatic cord lipoma is a benign (non-cancerous) mass made up of fat cells that develops in or around the spermatic cord. The spermatic cord is the bundle ...