| Gingivostomatitis |
| Glands – swollen |
| Glanzmann’s thrombasthenia |
| Glanzmann’s disease |
| Glaucoma |
| Glaucoma test |
| Glazes |
| Glioblastoma multiforme – adults |
| Glioblastoma multiforme – children |
| Glioma – adults |
| Glioma – children |
| Glioma – optic |
| Globoid cell leukodystrophy |
| Globulin electrophoresis |
| Glomerular filtration rate |
| Glomerulonephritis |
| Glomerulonephritis – acute |
| Glomerulonephritis – chronic |
| Glomerulonephritis – crescentic |
| Glomerulonephritis – membranoproliferative (type I) |
| Glomerulonephritis – membranoproliferative (type II) |
| Glomerulonephritis – membranous |
| Glomerulonephritis – post-streptococcal |
| Glomerulonephritis – pulmonary hemorrhage |
| Glomus jugulare tumor |
| Glomus tympanum tumor |
| Gloom |
| Glossitis |
| Glossitis – benign migratory |
| Glossopharyngeal neuralgia |
| Glossylan poisoning |
| Glucagon |
| Glucagonoma |
| Glucocerebrosidase deficiency |
| Glucose intolerance during pregnancy |
| Glucose test – blood |
| Glucose test – CSF |
| Glucose test – urine |
| Glucose tolerance test |
| Glucose-6-phosphate dehydrogenase |
| Glucose-6-phosphate dehydrogenase deficiency |
| Glucosuria test |
| Glucosylceramidase deficiency |
| Glucuronyl transferase |
| Glucuronyl transferase deficiency (type I Crigler-Najjar) |
| Glue |
| Glue ear |
| Glutamate-induced asthma |
| Gluten intolerance |
| Gluten sensitive enteropathy – diet |
| Gluten-free diet |
| Gluten-sensitive enteropathy |
| Glycogen storage disease type V |
| Glycohemoglobin |
| Glycosaminoglycans |
| Glycosylated hemoglobin |
| Goiter |
| Golden dawn poisoning |
| Goldmann visual field exam |
| Gonadal deficiency |
| Gonadal dysgenesis |
| Gonadal mosaicism |
| Gonadal stromal tumor |
| Gonadotropin deficiency |
| Gonads – male |
| Gonococcal arthritis |
| Gonococcal bacteremia |
| Gonococcal pharyngitis |
| Gonococcemia – disseminated |
| Gonorrhea |
| Good skin turgor |
| Goodpasture syndrome |
| Gorlin’s syndrome |
| Gout – acute |
| Gout – chronic |
| Gouty arthritis – acute |
| Gouty arthritis – chronic |
| Graft rejection |
| Graft-versus-host disease |
| Gram stain of cervix |
| Gram stain of joint fluid |
| Gram stain of pericardial fluid |
| Gram stain of pleural fluid |
| Gram stain of skin biopsy |
| Gram stain of skin lesion |
| Gram stain of sputum |
| Gram stain of stool |
| Gram stain of tissue biopsy |
| Gram stain of urethral discharge |
| Gram-negative meningitis |
| Grand mal seizure |
| Granular casts |
| Granular conjunctivitis |
| Granulocyte |
| Granulocytopenia |
| Granuloma annulare |
| Granuloma inguinale |
| Granulomatous arthritis |
| Granulomatous giant cell thyroiditis |
| Granulomatous ileocolitis |
| Granulopenia |
| Graphite |
| Grass allergy |
| Grass and weed killer poisoning |
| Graves disease |
| Gray syndrome |
| Grief |
| Grieving |
| Groin lump |
| Groin pain |
| Gross motor control |
| Group B streptococcal septicemia of the newborn |
| Growth – slow (child 0 – 5 years) |
| Growth and development – adolescent |
| Growth chart |
| Growth failure |
| Growth hormone |
| Growth hormone deficiency |
| Growth hormone excess |
| Growth hormone stimulation test |
| Growth hormone suppression test |
| Growth milestones for children |
| Growth milestones for children – 12 months |
| Growth milestones for children – 18 months |
| Growth milestones for children – 2 months |
| Growth milestones for children – 2 years |
| Growth milestones for children – 3 years |
| Growth milestones for children – 4 months |
| Growth milestones for children – 4 years |
| Growth milestones for children – 5 years |
| Growth milestones for children – 6 months |
| Growth milestones for children – 9 months |
| Guaiac smear test |
| Guillain-Barre syndrome |
| Gum biopsy |
| Gum disease |
| Gumma |
| Gums – bleeding |
| Gums – swollen |
| Guttate psoriasis |
| GVHD |
| Gynecologic laparoscopy |
| Gynecomastia |
