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Disease	Synonyms	Description	Articles	Phenotypes
osteochondritis dissecans	OCD	An ischemic bone disease that results_in necrosis ..[+] An ischemic bone disease that results_in necrosis located_in epiphysis. [-]
ossifying fibroma	Fibro-osteoma; peripheral ossifying fibroma	A bone benign neoplasm that is located_in the mout..[+] A bone benign neoplasm that is located_in the mouth and results_in an overgrowth of gingival tissue due to irritation or trauma. [-]
olfactory nerve disease	disorder of olfactory [1st] nerve; disorder of olf.. [+] disorder of olfactory [1st] nerve; disorder of olfactory nerve (disorder); disorder of 1st nerve; disorder of olfactory nerve [-]	A brain disease that is characterized by nerve inj..[+] A brain disease that is characterized by nerve injury located_in olfactory nerve, occurring as a result of normal aging, trauma, mass lesion or other insult, and has_symptom impaired sense of smell, has_symptom anosmia or loss of smell. [-]	1 articles
olfactory neuroblastoma	Olfactory Esthesioneuroblastoma; Asthesioneuroblas.. [+] Olfactory Esthesioneuroblastoma; Asthesioneuroblastoma (morphologic abnormality); Esthesioneuroepithelioma (morphologic abnormality); Esthesioneuroepithelioma [dup] (morphologic abnormality); Esthesioneuroblastoma (morphologic abnormality); paranasal sinus Olfactory neuroblastoma; Esthesioneuroepithelioma; Asthesioneuroblastoma; Esthesioneuroblastoma [-]	n_a
oral tuberculosis	Oral tuberculosis; Oral tuberculosis (disorder)	A gastrointestinal tuberculosis that involves form..[+] A gastrointestinal tuberculosis that involves formation of painful ulcerative mucosal lesions located in tongue, located in palate, located in maxilla or located in mandible. [-]
ophthalmoplegia	oculomotor paralysis; Total ophthalmoplegia; extra.. [+] oculomotor paralysis; Total ophthalmoplegia; extraocular muscle paralysis; eye movement paralysis [-]	n_a
overnutrition		A nutrition disease that is characterized by an ex..[+] A nutrition disease that is characterized by an excess of a nutritional element, such as a vitamin, mineral, carbohydrate, protein, fat, or general energy content. [-]	4 articles
ocular hypotension	Hypotony of eye	n_a
occipital lobe neoplasm	malignant neoplasm of occipital lobe; malignant ne.. [+] malignant neoplasm of occipital lobe; malignant neoplasm of occipital lobe (disorder); neoplasm of occipital lobe (disorder); tumor of Occipital Lobe; neoplasm of occipital lobe [-]	n_a
orbital disease		An adnexa disease that is located_in the eye socke..[+] An adnexa disease that is located_in the eye socket. [-]
Omsk hemorrhagic fever		A viral infectious disease that is a hemorrhagic f..[+] A viral infectious disease that is a hemorrhagic fever, has_material_basis_in Omsk hemorrhagic fever virus, which is transmitted_by Dermacentor and transmitted_by Ixodes species of ticks. The infection has_symptom fever, has_symptom chills, has_symptom headache, has_symptom pain in lower and upper extremities, has_symptom stiff neck, has_symptom papulovesicular rash on the soft palate, has_symptom cervical lymphadenopathy, has_symptom conjunctival suffusion, has_symptom blood in the urine, and has_symptom blood in the sputum. [-]
osteomyelitis		A bone inflammation disease that has_material_basi..[+] A bone inflammation disease that has_material_basis_in infection located_in bone or located_in bone marrow. [-]
oculocerebrorenal syndrome	oculocerebrorenal syndrome of Lowe; lowe oculocere.. [+] oculocerebrorenal syndrome of Lowe; lowe oculocerebrorenal syndrome; Lowe syndrome [-]	A syndrome that has_material_basis_in mutation in ..[+] A syndrome that has_material_basis_in mutation in the OCRL gene on chromosome Xq26 and that is characterized by hydrophthalmia, cataract, mental retardation, vitamin D-resistant rickets, amino aciduria, and reduced ammonia production by the kidney. [-]	1 articles
open-angle glaucoma	open angle glaucoma; glaucoma simplex; Wide-angle .. [+] open angle glaucoma; glaucoma simplex; Wide-angle glaucoma; pigmentary glaucoma [-]	A glaucoma characterized by optic nerve damage res..[+] A glaucoma characterized by optic nerve damage resulting in progressive loss of visual field and increased pressure in the eye due to trabecular blockage. [-]
ovarian disease		A female reproductive system disease that is locat..[+] A female reproductive system disease that is located_in the ovary. [-]	2 articles
optic neuritis		An optic nerve disease that results_in inflammatio..[+] An optic nerve disease that results_in inflammation located_in optic nerve which may cause a complete or partial loss of vision. [-]
ocular hyperemia	hyperEMIA eye; hyperemia of conjunctiva	n_a
ocular motility disease	disorder of eye movements; eye movement disorder	n_a
ovarian dysfunction		An ovarian disease that is characterized by irregu..[+] An ovarian disease that is characterized by irregular or absent ovulation. [-]	1 articles
ocular melanoma	eye melanoma; intraocular melanoma; melanoma of ey.. [+] eye melanoma; intraocular melanoma; melanoma of eye [-]	An ocular cancer that has_material_basis_in melano..[+] An ocular cancer that has_material_basis_in melanocytes and is located_in the eye. [-]
optic nerve disease	optic nerve disorder; optic neuropathy; disorder o.. [+] optic neuropathy; optic nerve disorder; disorder of the second nerve [-]	A cranial nerve disease that is located_in the opt..[+] A cranial nerve disease that is located_in the optic nerve. [-]
otosalpingitis	Eustachian tube salpingitis; Eustachian salpingiti.. [+] Eustachian tube salpingitis; Eustachian salpingitis [-]	A eustachian tube disorder which involves inflamma..[+] A eustachian tube disorder which involves inflammation of the mucous membrane of the cartilagenous portion of the eustachian tube caused by acute nasopharyngitis, infection from some pathogenic microbes or trauma of the tube. [-]
ovarian malignant mesothelioma		n_a
ovary sarcoma	sarcoma of Ovary	An ovarian cancer that has_material_basis_in abnor..[+] An ovarian cancer that has_material_basis_in abnormally proliferating cells derives_from embryonic mesoderm. [-]
ovarian lymphoma		An ovarian cancer that arises_from lymphocytes.
ovary epithelial cancer	Ovarian Surface epithelial-Stromal tumor; epitheli.. [+] Ovarian Surface epithelial-Stromal tumor; epithelial tumor of ovary; epithelial tumor of ovary (disorder) [-]	An ovarian cancer that is derives_from ovarian sur..[+] An ovarian cancer that is derives_from ovarian surface epithelium. [-]
ovarian Wilms' cancer	ovarian Wilms' tumor	A malignant neoplasm of ovary and nephroblastoma t..[+] A malignant neoplasm of ovary and nephroblastoma that is located_in the ovaries. [-]
ovarian germ cell cancer	ovarian germ cell tumor; germ cell tumor of ovary .. [+] ovarian germ cell tumor; germ cell tumor of ovary (disorder); germ cell neoplasm of Ovary; germ cell tumor of ovary [-]	An ovarian cancer that originates in the germ (egg..[+] An ovarian cancer that originates in the germ (egg) cells of the ovary. [-]
ocular cancer	Ocular tumor; eye neoplasm; neoplasm of eye; neopl.. [+] Ocular tumor; eye neoplasm; neoplasm of eye; neoplasm of eye proper; malignant eye neoplasm [-]	A sensory system cancer located_in the eye that is..[+] A sensory system cancer located_in the eye that is characterized by uncontrolled cellular proliferation in the eye. [-]	6 articles	25 matches
osteochondrodysplasia	Osteochondrodysplasia syndrome; Osteochondrodyspla.. [+] Osteochondrodysplasia syndrome; Osteochondrodysplasia syndrome (disorder); Congenital anomaly of cartilage (disorder); chondrodystrophy; Congenital anomaly of cartilage; skeletal dysplasia; Cartilage Development disorder [-]	A bone development disease that results_in defecti..[+] A bone development disease that results_in defective development of cartilage or bone. [-]	8 articles	9 matches
obstructive lung disease	respiratory airway obstruction	n_a	5 articles
ovarian cancer	ovarian neoplasm; ovary neoplasm; malignant Ovaria.. [+] ovary neoplasm; ovarian neoplasm; malignant Ovarian tumor; primary ovarian cancer; tumor of the Ovary; malignant tumour of ovary [-]	A female reproductive organ cancer that is located..[+] A female reproductive organ cancer that is located_in the ovary. [-]	1 articles
opportunistic mycosis	Opportunistic mycoses; opportunistic systemic myco.. [+] Opportunistic mycoses; opportunistic systemic mycoses; Opportunistic mycosis; Opportunistic mycosis (disorder); Opportunistic mycoses (disorder) [-]	A systemic mycosis that results_in fungal infectio..[+] A systemic mycosis that results_in fungal infection located_in human body of immunocompromised individuals, has_material_basis_in Fungi. The organisms invade via the respiratory tract, alimentary tract, or intravascular devices. [-]
orchitis	Orchititis; Inflammation of testis	n_a
opiate dependence	Opioid type dependence	A drug dependence that involves the continued use ..[+] A drug dependence that involves the continued use of opiate drugs despite despite problems related to use of the substance. [-]
ovarian Brenner tumor	ovarian Brenner tumour; benign ovarian Brenner tum.. [+] ovarian Brenner tumour; benign ovarian Brenner tumour; benign ovarian Brenner tumor [-]	An ovarian benign neoplasm that has_material_basis..[+] An ovarian benign neoplasm that has_material_basis_in the surface epithelium of the ovary. [-]
ovarian germ cell monodermal and highly specialized teratoma	Ovarian Monodermal and Highly Specialized teratoma.. [+] Ovarian Monodermal and Highly Specialized teratoma [-]	A monodermal teratoma that has_material_basis in g..[+] A monodermal teratoma that has_material_basis in germ cells that are highly specialized and is located_in the ovary. [-]
ossifying fibromyxoid tumor	ossifying fibromyxoid tumour; Ossifying fibromyxoi.. [+] ossifying fibromyxoid tumour; Ossifying fibromyxoid tumour; Ossifying fibromyxoid tumor; Ossifying fibromyxoid tumor (morphologic abnormality); Ossifying Fibromyxoma; Ossifying fibromyxoid tumor (disorder) [-]	n_a
ovary neuroendocrine neoplasm	neuroendocrine tumor of Ovary	An ovarian cancer that has_material_basis_in nuroe..[+] An ovarian cancer that has_material_basis_in nuroendocrine cells. [-]
oligodendroglioma	oligodendroglial neoplasm; oligodendroglial tumor; .. [+] oligodendroglial tumor; oligodendroglial neoplasm [-]	n_a
orbit embryonal rhabdomyosarcoma	Embryonal Rhabdomyosarcoma of the orbit	An orbit rhabdomyosarcoma that is characterized by..[+] An orbit rhabdomyosarcoma that is characterized by elongated to round spindle cells with features of skeletal muscle in different stages of embryogenesis with a highly eosiniphilic cytoplasm and hyperchromatic nuclei. [-]
orbit rhabdomyosarcoma	Rhabdomyosarcoma of orbit (disorder); Rhabdomyosar.. [+] Rhabdomyosarcoma of orbit (disorder); Rhabdomyosarcoma of the orbit; Rhabdomyosarcoma of orbit [-]	An orbit sarcoma that is that arises from primitiv..[+] An orbit sarcoma that is that arises from primitive pleuripotential mesenchymal cells that possess the ability to differentiate into striated muscle, most often in young children. [-]
ovarian cystadenoma	simple cystoma of ovary; simple cystoma of the ova.. [+] simple cystoma of ovary; simple cystoma of the ovary (disorder); Cystoma Serosum simplex; simple cystoma of the ovary [-]	An ovarian benign neoplasm that has_material_basis..[+] An ovarian benign neoplasm that has_material_basis_in glandular epithelial tissue in which cystic accumulations of retained secretions are formed. [-]
osteitis fibrosa	Osteitis fibrosa cystica generalisata; Osteitis fi.. [+] Osteitis fibrosa cystica generalisata; Osteitis fibrosa cystica generalisata (disorder); Von Recklinghausen's bone disease; hyperparathyroid bone disease [-]	A bone resorption disease that has_material_basis_..[+] A bone resorption disease that has_material_basis_in hyperparathyroidism which results_in hyperactivity in osteoclasts, deformity, and loss of mass located_in bone. [-]
osteosarcoma	osteoid sarcoma; Osteogenic sarcoma; bone tissue n.. [+] Osteogenic sarcoma; osteoid sarcoma; bone tissue neoplasm; Skeletal sarcoma [-]	A bone sarcoma that is located_in bone that has_ma..[+] A bone sarcoma that is located_in bone that has_material_basis_in cells of mesenchymal origin. [-]
optic nerve neoplasm	Tumour of optic nerve; neoplasm of optic nerve (di.. [+] Tumour of optic nerve; neoplasm of optic nerve (disorder); tumor of Second Cranial nerve; neoplasm of optic nerve [-]	n_a
ovarian gonadoblastoma		An ovarian benign neoplasm that is has_material_ba..[+] An ovarian benign neoplasm that is has_material_basis_in a mixture of gonadal elements. [-]
ovarian mucinous cystadenocarcinoma	Ovarian mucinous cystadenocarcinoma; mucinous cyst.. [+] Ovarian mucinous cystadenocarcinoma; mucinous cystadenocarcinoma of ovary (disorder); mucinous cystadenocarcinoma of ovary [-]	An ovarian cystadenocarcinoma that is characterize..[+] An ovarian cystadenocarcinoma that is characterized by the presence of mucin. [-]
ovarian cystadenocarcinoma	cystadenocarcinoma of ovary (disorder); cystadenoc.. [+] cystadenocarcinoma of ovary (disorder); cystadenocarcinoma of the Ovary; cystadenocarcinoma of ovary [-]	An ovary adenocarcinoma that is characterized by t..[+] An ovary adenocarcinoma that is characterized by the presence of cysts or cystic spaces. [-]
ovarian mucinous adenocarcinoma	mucinous carcinoma of Ovary	An ovary adenocarcinoma that is characterized by t..[+] An ovary adenocarcinoma that is characterized by the presence of mucin. [-]

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