Biliary tract cancer is a malignant neoplasm that involves the bile ducts and related structures. Recognized subtypes, such as biliary cystadenocarcin...

Bilineal acute myeloid leukemia is an acute leukemia characterized by a dual population of blasts, each expressing distinct lineage markers, either my...

Bilirubin encephalopathy, also known as kernicterus or kernicterus spectrum disorder, is a neurologic condition that results from the toxic effects of...

Binder syndrome is a rare developmental anomaly that primarily affects the anterior portion of the maxilla and nasal complex. This condition, also kno...

Biotinidase deficiency is a late-onset form of multiple carboxylase deficiency, an inherited metabolic condition that affects the body’s ability to re...

Biotin-responsive basal ganglia disease is a very rare inherited neurological condition that primarily affects the basal ganglia, a region of the brai...

Bipartite talus is an extremely rare condition. Because few cases have been documented, detailed clinical information is limited.

Biphasic synovial sarcoma is an extremely rare condition. Because few cases have been documented, detailed clinical information is limited.

bird fancier's lung is an extremely rare condition. Because few cases have been documented, detailed clinical information is limited.

Bird headed-dwarfism, Montreal type is a rare genetic disorder characterized by severe short stature and distinct craniofacial features including micr...

Birdshot chorioretinopathy is a type of posterior uveitis that primarily affects the eye, characterized by multiple cream-colored, hypopigmented lesio...

Birk-Barel syndrome is an inherited imprinting disorder characterized by intellectual disability, hypotonia, and distinctive facial dysmorphism. It is...

Birt-Hogg-Dube syndrome 1 is a genetic condition that primarily affects the skin, respiratory system, kidneys, endocrine system, and eyes. It is cause...

Bjornstad syndrome is a condition primarily affecting the auditory system and hair, characterized by congenital sensorineural hearing impairment and p...

blackwater fever is an extremely rare condition. Because few cases have been documented, detailed clinical information is limited.

Bladder carcinoma in situ (CIS) is a flat lesion of the transitional cell epithelium characterized by severe cytologic atypia, confined to the urothel...

Bladder exstrophy, also known as classic bladder exstrophy (CEB), is a rare congenital condition that affects the genitourinary system. It is part of...

Bladder exstrophy-epispadias-cloacal extrophy complex (BEEC) is an anterior midline defect characterized by variable expression affecting the infraumb...

Bladder inflammatory myofibroblastic tumor is a rare neoplasm characterized by spindle-shaped fibroblasts and myofibroblasts, accompanied by a chronic...

Bladder lymphoma is a type of cancer that specifically involves the urinary bladder. As a lymphoma, it arises from lymphocytes that affect the bladder...