Disorders of Pigmentation and Melanocytes :VitiligoFreckle (Ephelis)MelasmaLentigoMelanocytic Nevus (Pigmented Nevus, Mole)Dysplastic NeviMalignant MelanomaDiagnostic Criteria and Prognostic Attributes

Benign Epithelial Tumors:Seborrheic KeratosesAcanthosis NigricansFibroepithelial PolypEpithelial Cyst (Wen)Adnexal (Appendage) TumorsKeratoacanthoma

Premalignant and Malignant Epidermal Tumors:Actinic KeratosisSquamous Cell CarcinomaBasal Cell CarcinomaMerkel Cell CarcinomaMolecular Genetics of Skin Cancers

Tumors of the Dermis:Benign Fibrous Histiocytoma (Dermatofibroma)Dermatofibrosarcoma ProtuberansXanthomasDermal Vascular Tumors

Tumors of Cellular Immigrants to the skin:Langerhans Cell HistiocytosisMycosis Fungoides (Cutaneous T-cell Lumphoma)MastocytosisDisorders of Epidermal Maturation: Ichthyosis

Acute Inflammatory Dermatoses:UrticariaAcute Eczematous DermatitisErythema Multiforme

Chronic Inflammatory Dermatoses:PsoriasisSeborrheic DermatitisLichen PlanusLupus Erythematosus

Blistering (Bullous) Diseases:PemphigusBullous PemphigoidDermatitis HerpetiformisNoninflammatory Blistering Diseases: Epydermolysis Bullosa, Porphyria

Disorders of Epidermal Appendages:Acne Vulgaris

Panniculitis Erythema Nodosum and Erythema Induratum

Infection and InfestationVerrucae (Warts)Molluscum ContagiosumImpetigoSuperficial Fungal InfectionsArthropod Bites, Stings, and Infestations

* Normal Peripheral Nerve * Normal Skeletal MuscleA. General Reactions of the Motor Unit 1. Segmental Demyelination 2. Axonal Degeneration and Muscle Fiber Atrophy 3. Nerve Regeneration and Reinnervation of Muscle 4. Reactions of the Muscle Fiber

B. Diseases of Peripheral Nerve 1. Inflammatory Neuropathies * Immune-Mediated Neuropathies 2. Infectious Polyneuropathies * Leprosy * Diphtheria * Varicella-Zoster Virus 3. Hereditary Neuropathies * Hereditary Motor and Sensory Neuropathy Type 1 * Other Hereditary Motor and Sensory Neuropathies

Cont.. 4. Acquired Metabolic and Toxic Neuropathies * Peripheral Neuropathy in Adult-Onset Diabetes Mellitus * Metabolic and Nutritional Peripheral Neuropathies * Neuropathies Associated with Malignancy * Toxic Neuropathies 5. Traumatic Neuropathies 6. Tumors of Peripheral Nerve

C. Diseases of Skeletal Muscle 1. Denervation Atrophy * Spinal Muscular Atrophy (Infantile Motor Neuron Disease)

Cont 2.Muscular Dystrophies * X-Linked Muscular Dystrophy (Duchenne Muscular Dystrophy and Becker Muscular Dystrophy) * Autosomal Muscular Dystrophies * Myotonic Dystrophy 3. Ion Channel Myopathies (Channelopathies) 4. Congenital Myopathies 5. Myopathies Associated with Inborn Errors of Metabolism * Lipid Myopathies * Mitochodrial Myopathies (Oxidative Phosphorylation Diseases)

Cont.

6. Inflammatory Myopathies * Noninfectious Inflammatory Myopathies 7. Toxic Myopathies * Thyrotoxic Myopathy * Ethanol Myopathy * Drug-Induced Myopathies 8. Diseases of the Neuromuscular Junction * Myasthenia Gravis * Lambert-Eaton Myasthenic Syndrome 9. Tumors of Skeletal Muscle

A.Bones1.Bone Modeling and Remodeling2.Bone Growth and Development3.Developmental (Genetic) and Acquired Abnormalities in Bone Cells, Matrix, and Structure 3.1 Malformations and Diseases Caused by Defects in Nuclear Proteins and Transcription Factors3.2 Diseases Caused by Defects in Hormones and Signal Transduction Mechanisms3.3 Diseases Associated with Defects in Extracellula Structural Proteins * Type 1 Collagen Diseases (Osteogenesis Imperfecta) * Type 2,10, and 11 Collagen Diseases

Cont.3.4 Diseases Associated with Defects in Folding and Degradation of Macromolecules * Mucopolysaccharidoses3.5 Diseases Associated with Defects in Metabolic Pathways (Enzymes, Ion Channels, and Transporters) * Osteopetrosis3.6 Diseases Associated with Decreased Bone Mass * Osteoporosis3.7 Diseases Caused by Osteoclast Dysfunction * Paget Disease (Osteitis Deformans)

Cont. 3.8 Diseases Associated with Abnormal Mineral Homeostasis * Rickets and Osteomalacia * Hyperparathyroidism * Renal Osteodystrophy 4. Fractures 5. Osteonecrosis (Avascular Necrosis) 6. Infections-Osteomyelitis 6.1 Pyogenic Osteomyelitis 6.2 Tuberculous Osteomyelitis 6.3 Skeletal Syphilis 7. Bone Tumors and Tumor-Like Lesions 7.1 Bone-Forming Tumors * Osteoma * Osteoid Osteoma and Osteoblastoma * Osteosarcoma

Cont. 7.2 Cartilage-Forming Tumors * Osteochondroma * Chondromas * Chondroblastoma * Chondromyxoid Fibroma * Chondrosarcoma 7.3 Fibrous and Fibro-Osseous Tumors * Fibrous Cortical Defect and Nonossifying Fibroma * Fibrous Dysplasia * Fibrosarcoma and Malignant Fibrous Histiocytoma 8. Miscellaneous Tumors 8.1 Ewing Sarcoma and Primitive Neuroectodermal Tumor (PNET) 8.2 Giant Cell Tumor 8.3 Metastatic Disease

B. Joints 1. Arthritis 1.1 Osteoarthritis 1.2 Rheumatoid Arthritis 1.3 Juvenile Rheumatoid Arthritis 1.4 Seronegative Spondyloarthropathies * Ankylosing Spondyloarthritis * Reactive Arthritis * Psoriatic Arthritis 1.5 Infectious Arthritis * Suppurative Arthritis * Tuberculous Arthritis * Lyme Arthritis * Viral Arthritis 1.6 Gout and Gouty Arthritis

Cont

1.7 Calcium Pyrophosphate Crystal Deposition Disease (Pseudogout) 2. Tumors and Tumor-Like Lesions 2.1 Ganglion and Synovial Cyst 2.2 Pigmented Villonodullar Synovitis and Giant Cell Tumor of Tendon Sheath

C. Soft Tissue Tumors and Tumor-Like Lesions 1. Pathogenesis and General Features 2. Fatty Tumors 2.1Lipoma 2.2Liposarcoma 3. Fibrous Tumors and Tumor-Like Lesions 3.1Reactive Pseudosarcomatous Proliferations* Nodular Fasciitis* Myositis Ossificans

Cont. 3.2 Fibromatoses * Superficial Fibromatosis (Palmar, Plantar, and Penile Fibromatoses) * Deep-Seated Fibromatosis (Desmoid Tumors) 3.3 Fibrosarcoma 4. Fibrohistiocytic Tumors 4.1 Benign Fibrous Histiocytoma (Dermatofibroma) 4.2 Malignant Fibrous Histiocytoma 5. Tumors of Skeletal Muscle 5.1 Rhabdomyosarcoma 6. Tumors of Smooth Muscle 6.1 Leiomyoma 6.2 Leiomyosarcoma 7. Synovial Sarcoma