Dermatology is the science responsible for the study of the skin, mucous membranes (oral and genital) and cutaneous appendages, while dermatopathology focuses on its microscopic study. Although the two fields are closely related, in many cases the identification of dermatological diseases is mainly clinical and depends on the physician's ability and experience.

The purpose of this atlas, which collects over 900 clinical and histological photographs in high resolution, is to illustrate and describe the most frequent skin diseases on the basis of clinical cases. Offering a complete guide to the etiology, epidemiology, clinical features, histologic findings and diagnosis of the main skin diseases divided into three subgroups (inflammatory, infectious, or tumoral), it represents an invaluable resource for all medical students, residents, clinicians, and investigators learning dermatology.

<p><b>I.    </b><b>INFLAMMATORY SKIN DISEASES</b></p><p><b>Chapter 1. Papulosquamous and eczematous dermatoses </b></p><p>1. Dermatitis or eczema</p><p>a. Contact dermatitis</p><p>i. Allergic contact dermatitis</p><p>ii. Irritant contact dermatitis</p><p>b. Atopic dermatitis</p><p>c. Aesteatotic dermatitis</p><p>d. Nummular dermatitis</p><p>e. Gravitational Dermatitis</p><p>f. Seborrheic dermatitis</p><p>g. Palmoplantar vesicular dermatitis</p><p>i. Ponfólix</p><p>ii. Chronic vesicle-bullous dermatitis of the hands</p><p>iii. Hyperkeratotic dermatitis of the hand</p><p>iv. Ide reaction</p><p>h. Autosensitization dermatitis</p><p>i. Herpetic eczema or varicelliform eruption of Kaposi</p><p>j. Infectious dermatitis</p><p>k. Chronic simple liquor</p><p>l. Nodular prurigo</p><p>m. Plantar Juvenile Dermatosis</p> <p>2. Psoriasis</p><p>a. Psoriasis vulgaris or plaques</p><p>b. Guttate Psoriasis</p><p>c. Pustular psoriasis</p><p>i. Located</p><p>1. Palmoplantar Pustulosis</p><p>2. Continuous acrodermatitis of Hallopau</p><p>ii. Generalized</p><p>1. Acute generalized pustulose (von Zumbusch)</p><p>2. Annular pustular</p><p>d. Inverse psoriasis</p><p>e. Scalp Psoriasis</p><p>f. Genital Psoriasis</p><p>g. Erythrodermic psoriasis</p><p>h. Nail Psoriasis</p><p>i. Psoriatic arthropathy</p><p>j. HIV-associated psoriasis </p> <p>3. Lichen and lichenoid reactions</p><p>a. Lichen planus</p><p>i. Lichen planus pillar</p><p>ii. Oral lichen planus</p><p>iii. Actinic lichen planus</p><p>iv. Lichen planus pigmentosa</p><p>v. Acute exanthematic flat lichen</p><p>vi. Lichen inverse plane</p><p>vii. Genital lichen planus</p><p>viii. Hypertrophic lichen planus</p><p>ix. Bullous or pemphigid lichen planus</p><p>x. Annular lichen planus</p><p>xi. Linear lichen planus</p><p>xii. Ungular lichen planus</p><p>xiii. Ulcerative lichen planus</p><p>b. Lichenoid reaction</p><p>c. Fixed pigmented erythema</p><p>d. Lichen Crisp</p><p>e. Lichen striatum</p><p>f. Persistent dyschromic erythema</p><p>g. Chronic Lichenoid Keratosis </p> <p><b>Chapter 2. Other Papular, erythematous and scaly diseases</b></p>1. Pityriasis Lichenoid<br>2. Pityriasis liquenoid and acute varioliform<br>3. Pityriasis, chronic lichenoid<br>4. Pityriasis liquenoid leukcomelandermal<br>5. Pityriasis rubra pilaris<br>6. Pityriasis rosea<br>7. Pityriasis rotunda<br>8. Granular Parakeratosis <br> <p><b>Chapter 3. Inflammatory diseases of pilose follicle</b></p><p>1. Alopecia</p>a. Non-scarringi. Alopecia areataii. Alopecia universalisiii. Alopecia totalisiv. Patchy alopecia areatav. Diffuse Alopecia areatavi. Ophiasis alopeciavii. Sisaifo or reverse ophiasis alopeciaviii. Androgenic Alopeciaix.Telogen effluviumx. Trichotillomaniaxi. Traction alopeciaxii. Temporal triangular alopeciaxiii. Lipedematous Alopecia b. Scarringi. Central centrifugal scarring alopeciaii. Lichen planus pilaris1. Classic type2. Fibrosing frontal alopecia3. Graham-Little-Piccardi syndromeiii. Mucinous Alopeciaiv. Discoid lupusv. Keloid acne of the neckvi. Decalvating folliculitisvii. Dissecting folliculitis <p>2. Inflammatory folliculitis</p><p>a. Pseudofolliculitis of the beard</p><p>b. Other follicular disorders</p><p>c. Suppurative Hydradenitis </p> <p><b>Chapter 4. Inflammatory diseases of the sebaceous and apocrine glands</b> </p><p>1. Acne</p><p>a. Degrees of severity: mild, moderate and severe</p><p>b. Acne conglobata</p><p>c. Acne fulminans</p><p>d. Acne necroticans</p><p>e. Acne ointment or cosmetic</p><p>f. Steroid or medication-induced acne</p><p>g. Hormonal acne</p><p>h. Neonatal acne</p><p>i. Childhood acne</p><p>j. Excoriated acne</p><p>k. Occupational acne</p><p>l. Radiation acne</p><p>2. Rosacea</p><p>a. Erythematous-telangiectatic rosacea</p><p>b. Papulopustular rosacea</p><p>c. Phymatous rosacea</p><p>d. Ocular rosacea</p><p>e. Rosaceiform Dermatitis</p><p>3. Perioral dermatitis<b> </b></p> <p><b>Chapter 5. Inflammatory skin diseases induced by drugs</b></p><p>1.<b> </b>Drug reactions</p><p>a. Morbilliform rash</p><p>b. Erythema multiforme</p><p>c. Steven-Johnson syndrome</p><p>d. Toxic epidermal necrolysis</p><p>e. Drug reaction with eosinophilia and systemic symptoms</p><p>f. Acute generalized exanthematous pustulosis<b> </b></p> <p><b>Chapter 6. Inflammatory diseases of the blood vessels with cutaneous involvement</b></p><p>1. Vasculitis</p><p>a. Small vessel vasculitis</p><p>i. Leukocytoclastic vasculitis</p><p>ii. Henoch-Schonlein purple</p><p>iii. Acute hemorrhagic edema of childhood</p><p>iv. Erythema elevatum diutinum</p><p>b. Mixed vasculitis</p><p>i. Cryoglobulinemia</p><p>ii. Associated with ANCA antibodies</p><p>iii. Microscopic polyangiitis</p><p>iv. Wegener granulomatosis</p><p>v. Churg-Strauss syndrome</p><p>c. Secondary</p><p>i. Septic vasculitis</p><p>ii. Vasculitis associated with inflammatory disorders (disseminated intravascular coagulation)</p><p>d. Medium vessel vasculitis</p><p>i. Polyarteritis nodosa</p><p>e. Vasculitis of large vessels</p><p>i. Temporal arteritis</p><p>ii. Takayasu arteritis </p> <p><b>Chapter 7. Inflammatory diseases affecting melanocytes</b> </p><p>1. Inflammatory diseases that occur with hyperpigmentation</p><p>a. Post-inflammatory hyperpigmentation</p><p>b. Persistent dyschromic erythema</p><p>c. Lichen planus pigmentosa</p><p>d. Melasma</p><p>e. Flagellated Erythema</p><p>f. Confluent and reticulated papillomatosis of Gougerot and Carteaud</p><p>g. Erythema ab igne </p><p>2. Inflammatory diseases that occur with hypopigmentation</p><p>a. Vitiligo</p><p>b. Post-inflammatory hypopigmentation</p><p>c. Lichen sclerosus and atrophic</p><p>d. Lichen striatum</p><p>e. Pityriasis alba </p> <p><b>Chapter 8. Bullous vesicular inflammatory diseases</b> </p><p>1. Pemphigus</p><p>a. Pemphigus vulgaris</p><p>i. Mucocutaneous</p><p>ii. Vegetant</p><p>b. Pemphigus foliaceus</p><p>i. Seborrheic or classic</p><p>ii. Fogo type selvagem</p><p>iii. Senear syndrome - Usher</p><p>c. Paraneoplastic Pemphigus</p><p>2. Dermatitis herpetiformis</p><p>3. Linear IgA dermatosis</p><p>4. Bullous Pemphigoid</p><p>5. Scarring pemphigoid</p><p>6. Pemphigoid gestationis</p><p>7. Epidermolysis bullosa acquired<b> </b></p> <p><b>Chapter 9. Inflammatory skin diseases presented as erythema, urticaria and purpura</b> </p><p>1. Urticaria</p><p>a. Allergic urticaria</p><p>b. Physical urticaria</p><p>c. Cold and heat urticaria</p><p>d. Cholinergic urticaria</p><p>e. Vasculitic urticaria </p><p>2. Figurate erythemas</p><p>a. Annular Erythema Centrifugal</p><p>b. Erythema gyratum repens</p><p>c. Migratory Necrolytic Erythema</p><p>d. Migratory erythema</p><p>e. Married Erythema </p><p>3. Purples</p><p>a. Purple Pigments</p><p>i. Progressive pigmentary dermatosis of Schamberg</p><p>ii. Majocchi telangiectodes annular purpura</p><p>iii. Gougerot and Blum pigmentary purpuraica lichenoid dermatitis</p><p>iv. Lichen aureus</p><p>v. Pruritic purpura or eczematoid of Doucas and Kapetanakis </p> <p><b>Chapter 10. Inflammatory connective tissue diseases</b> </p><p>1. Cutaneous lupus</p><p>a. Acute lupus erythematosus</p><p>b. Subacute lupus erythematosus (SCLE)</p><p>i. Annular SCLE</p><p>ii. Papulosquamous/psoriasiform SCLE</p><p>c. Chronic cutaneous lupus</p><p>i. Chronic discoid lupus erythematosus</p><p>1. Located</p><p>2. Disseminated</p><p>ii. Hypertrophic</p><p>iii. Lupus panniculitis</p><p>iv. Lupus Childblain</p><p>v. Lupus tumidus</p><p>vi. Bullous lupus</p><p>d. Other variants</p><p>i. Rowell syndrome</p><p>ii. Neonatal Lupus </p><p>2. Dermatomyositis</p><p>3. Scleroderma</p><p>4. Morphea</p><p>5. Scleredema</p><p>6. Recurrent Polychondritis</p><p>7. Rheumatoid arthritis</p><p>8. Graft versus host disease </p> <p><b>Chapter 11. Granulomatous inflammatory diseases</b></p><p>1.<b> </b>Sarcoidosis</p><p>2. Annular granuloma</p><p>3. Lipoid Necrobiosis</p><p>4. Giant cell annular elastotic granuloma</p><p>5. Crohn's disease of the skin<b> </b></p> <b>Chapter 12. Inflammatory diseases induced by ultraviolet radiation</b> 1. Immunologically mediated dermatosesa. Polymorphic luminic eruptionb. Actinic prurigoc. Chronic actinic dermatitis d. Solar urticariae. Hydroa vacciniform2. Photodermatosis secondary to exogenous agentsa. Photocontact dermatitisb. Phototoxic and photoallergic dermatitis 3. Photodermatosis secondary to endogenous agentsa. Congenital erythropoietic porphyriab. Erythropoietic Protoporphyriac. Cutaneous porphyria takesd. Pseudoporphyriae. Hepatoerythropoietic porphyria 4. Diseases caused by defects in DNA repaira. Xeroderma pigmentosob. Trichotiodystrophy 5. Photogravure disorders (present in each respective section)a. Lupus erythematosusb. Dermatomyositisc. Rosacead. Atopic dermatitise. Seborrheic dermatitis <p><b>Chapter 13. Neutrophilic and eosinophilic inflammatory diseases</b> </p><p>1. Neutrophilic Infiltrates</p><p>a. Acute febrile neutrophilic dermatosis (Sweet syndrome)</p><p>b. Pyoderma gangrenosum</p><p>c. Subcorneal pustular dermatosis (Sneddon-Wilkinson disease)</p><p>d. Behcet's disease</p><p>e. Neutrophilic dermatosis of the back of the hands</p><p>f. Ecrine Neutrophilic Hydradenitis</p><p>g. Rheumatoid Neutrophilic Dermatitis </p><p>2. Eosinophilic Infiltrates</p><p>a. Facial granuloma</p><p>b. Eosinophilic pustular folliculitis</p><p>c. Eosinophilic cellulitis</p><p>d. Eosinophilic Fasciitis </p> <p><b>Chapter 14. Inflammatory diseases of subcutaneous cell tissue</b> </p><p>1. Lobular Panniculitis</p><p>a. Indurated Bazin Erythema or Nodular Vasculitis</p><p>b. Pancreatic panniculitis</p><p>c. Scleredema neonatorum</p><p>d. Fat necrosis of the newborn</p><p>e. Post-steroid panniculitis</p><p>f. Lupus panniculitis</p><p>g. Panniculitis due to dermatomyositis</p><p>h. Lipodystrophic Panniculitis</p><p>i. Cold panniculitis</p><p>j. Sclerosing Lipogranuloma</p><p>k. Paniculitis from injected substances</p><p>l. Lipodermatosclerosis</p><p>2. Septal panniculitis</p><p>a. Paniculitis due to alpha 1 antitrypsin deficiency</p><p>b. Erythema nodosum </p> <p><b>II. INFECTIOUS SKIN DISEASES</b> </p><p><b>Chapter 15. Bacterial infections</b> </p><p>1. Staphylococcal and streptococcal infections</p><p>a. Impetigo</p><p>b. Ectima</p><p>c. Erysipelas</p><p>d. Cellulitis</p><p>e. Acute lymphangitis</p><p>f. Necrotizing Fasciitis</p><p>g. Folliculitis, boil, anthrax</p><p>h. Acute paronychia</p><p>2. Staphylococcal and streptococcal toxin syndromes</p><p>a. Scalded skin syndrome</p><p>b. Toxic Shock Syndrome</p><p>c. Toxic Streptococcal Shock Syndrome</p><p>d. Scarlet fever</p><p>e. Erysipeloid</p><p>f. Corinebacterial Infections</p><p>g. Erythrasma</p><p>h. Keratolysis punctata</p><p>3. Gram-negative infections</p><p>a. Gangrenous Ectima</p><p>b. Infections caused by Bartonella</p><p>c. Disease cat scratch</p><p>d. Bacillary Angiomatosis</p><p>e. Bacteria previously classified as fungi</p><p>f. Actinomycosis</p><p>g. Nocardiosis </p> <p><b>Chapter 16. Mycobacterial Infections</b> </p><p>1. Leprosy</p><p>a. Cutaneous tuberculosis</p><p>b. Tubercle chancre</p><p>c. Bazin indurated erythema</p><p>d. Escrofuloderma</p><p>e. Lichen scrofulosorum</p><p>f. Lupus vulgaris</p><p>2. Acute disseminated miliary tuberculosis</p><p>3. Papulonecrotic tuberculosis</p><p>4. Tuberculosis verrucous complexion</p><p>5. Non-tuberculous mycobacteria </p> <p><b>Chapter  17. Fungal infections</b> </p><p>1. Superficial mycoses</p><p>a. Dermatophytosis or ringworm</p><p>i. Tinea capitis</p><p>ii. Tinea Faciei</p><p>iii. Ringworm of the beard</p><p>iv. Tinea corporis</p><p>v. Inguinal ringworm</p><p>vi. Tinea Pedis</p><p>vii. Tinea Incognita</p><p>b. Cutaneous Candidiasis</p><p>i. Oral and perioral candidiasis</p><p>ii. Pseudomembranous</p><p>iii. Perleche (angular cheilitis)</p><p>iv. Atrophic oral candidiasis</p><p>v. Hypertrophic oral candidiasis</p><p>vi. Genital candidiasis</p><p>vii. Candidiasic Intertrigo</p><p>viii. Candidatic Perionixix</p><p>c. Onychomycosis</p><p>d. Pityriasis versicolor</p><p>e. Black ringworm</p><p>2. Deep mycoses</p><p>a. Chromomycosis</p><p>b. Mycetoma</p><p>c. Sporotrichosis</p><p>d. Lobomycosis </p><p>3. Systemic mycoses</p><p>a. Blastomycosis</p><p>b. Coccidiodomycosis</p><p>c. Histplasmosis</p><p>d. Paracoccidiodomycosis<b> </b></p> <p><b>Chapter 18. Virus infections</b> </p><p>1. Enterovirus</p><p>a. Hand-foot-mouth disease</p><p>b. Herpangina</p><p>c. Pseudoangiomatosis eruptive </p><p>2. Herpesvirus (VHH)</p><p>a. VHH 1 AND 2: Herpes simplex virus (HSV) types 1 and 2</p><p>i. Herpetic gingivostomatitis</p><p>ii. Genital herpes</p><p>iii. Herpetic eczema</p><p>iv. Herpetic Panadizo</p><p>v. Herpes gladiatorum</p><p>vi. Herpetic folliculitis</p><p>vii. Herpes simplex hypertrophic</p><p>b. VHH 3: Varicella zoster virus</p><p>i. Chickenpox</p><p>ii. Congenital chickenpox</p><p>iii. Herpes zoster</p><p>c. VHH 4: epstein-barr virus</p><p>i. Hairy leukoplakia</p><p>ii. Ulcers of lipschütz</p><p>iii. Hydroa vacciniforme</p><p>d. VHH 5: Cytomegalovirus</p><p>e. VHH 6: Herpesvirus type 6</p><p>i. Exanthem Subitum</p><p>f. VHH 7: Herpes virus type 7</p><p>i. Pityriasis rosea</p><p>g. VHH 8: Herpesvirus type 8</p><p>i. Kaposi's sarcoma </p><p>3. Papillomavirus</p><p>a. Vulgar warts</p><p>b. Flat warts</p><p>c. Accumulated condyloma</p><p>d. Bowenoid Papulosis</p><p>e. Heck disease </p><p>4. Poxvirus</p><p>a. Molluscum contagiosum</p><p>b. Orf nodule</p><p>c. Milkman's Node</p><p>5. Other virus diseases</p><p>a. Chikungunya</p><p>b. Infectious erythema</p><p>c. Unilateral laterothoracic rash</p><p>d. Roseola</p><p>e. Rubella</p><p>f. Measles</p><p>g. Gianotti-crosti syndrome </p> <p><b>Chapter 19. Sexually transmitted diseases</b> </p><p>1. Syphilis</p><p>2. Gonorrhea</p><p>3. Chancroid</p><p>4. Venereal lymphogranuloma</p><p>5. Inguinal granuloma </p> <p><b>Chapter 20. Infections by parasites</b> </p><p>1. Protozoa</p><p>a. Leishmaniasis</p><p>2. Helminths</p><p>a. Cutaneous Migrans Larva</p><p>b. Filariasis</p><p>3. Infestations</p><p>a. Scabiosis</p><p>b. Pediculosis</p><p>c. Tungiasis</p><p>d. Cutaneous myiasis </p> <p><b>III. NEOPLASTIC SKIN DISEASES</b> </p><p><b>Chapter 21. Benign neoplasms</b> </p><p>1. Benign epidermal tumors and proliferations</p><p>a. Seborrheic keratosis</p><p>b. Lichenoid Keratosis</p><p>c. Estucokeratosis</p><p>d. Poroqueratosis</p><p>e. Papular nigrans dermatosis</p><p>f. Verruciform Acrokeratosis</p><p>g. Cutaneous horn</p><p>h. Clear cell acanthoma</p><p>i. Acanthoma Acanthoma</p><p>j. Epidermolytic acanthoma</p><p>k. Large cell acanthoma</p><p>l. Inverted follicular keratosis</p><p>m. Epidermal nevus</p><p>n. Linear Verrucous Epidermal Nevus</p><p>o. Flegel disease (hyperkeratosis lenticularis perstans)</p><p>p. Comedogenic Nevus</p><p>q. Acanthosis nigricans</p><p>r. Confluent and cross-linked papillomatosis</p><p>s. Clear cell papulosis </p><p>2. Cysts with stratified squamous epithelium</p><p>a. Epidermoid cyst</p><p>b. Winer's dilated pore and pillar sheath cliff</p><p>c. Millium Cyst</p><p>d. Triquilemal cyst</p><p>e. Proliferating epidermoid cyst</p><p>f. Cyst hair vellus</p><p>g. Steatocistoma</p><p>h. Keratocysts</p><p>i. Follicular Hybrid Cyst</p><p>j. Dermoid cyst</p><p>k. Pre-auricular cyst</p><p>l. Pilonidal cyst </p> <p><b>Chapter 22. Skin adnexal neoplasms </b></p>1. Hair follicle nevus<br>2. Trichofolliculoma<br>3. Sebaceous Nevus<br>4. Tricoepitelioma / tricoblastoma<br>5. Desmoplastic trichoepithelioma<br>6. Pilomatricoma<br>7. Pilmatrical carcinoma<br>8. Triquilemoma<br>9. Triquilemal Carcinoma<br>10. Tumor of the follicular infundibulum<br>11. Tricoadenoma<br>12. Proliferating pillar tumor<br>13. Sebaceous gland hyperplasite<br>14. Sebaceous adenoma-sebaceous epithelioma, sebaceoma<br>15. Sebaceous carcinoma<br>16. Syringoma<br>17. Poroma<br>18. Hydradenoma<br>19. Apocrine adenoma<br>20. Papilliferous Syringocystodenoma<br>21. Spiroadenoma<br>22. Cylindroma<br>23. Porocarcinoma<br>24. Ecrine Nevus<br>25. Sirigofibroadenoma<br>26. Papillary adenoma and adenocarcinoma <br> <p><b>Chapter 23. Muscle, adipose tissue and cartilaginous neoplasms</b> </p><p>1. Leiomyoma<br>2. Leiomyosarcoma</p><p>3. Smooth muscle hamartoma</p>4. Lipoma<br>5. Angiolipoma<br>6. Hibernoma<br>7. Superficial lipomatous nevus<br>8. Lipoblastoma<br>9. Liposarcoma<br>10. Chondrome <br> <p><b>Chapter 24. Vascular malformations</b> </p><p>1. Capillaries:</p><p>a. Klippel syndrome - Trenaunay</p><p>b. Porto wine stain</p><p>2. Arterial: Angiohistiocytoma</p><p>a. Telangiectasias</p><p>b. Cutist congenital telangiectatic marmorata</p><p>c. Angiokeratomas</p><p>3. Venous:</p><p>a. Venous Cephalic Malformation</p><p>b. Glomus-venous</p><p>4. Lymphatic: hemangiolinphangioma</p><p>5. Other vascular malformations:</p><p>a. Anemic nevus</p><p>b. Venous lake</p><p>c. Cherry anigoma</p><p>d. Telangiectatic granuloma</p><p>6. Infantile hemangioma<b> </b></p> <p><b>Chapter 25. Fibrous and fibrohystiocytic proliferations of skin and tendons</b> </p>1. Dermatofibromas<br>2. Angiofibromas<br>3. Loose fibroma<br>4. Superficial fibromatosis: Juvenile plantar fibromatosis: Plantar fibromatosis Ledderhose disease<br>5. Acral fibrokeratoma<br>6. Superficial acral fibromxoma<br>7. Pleomorphic skin fibroma<br>8. Giant cell tumors of the tendon sheath<br>9. Tendon sheath fibroma<br>10. Nodular fasciitis<br>11. Connective tissue nevus<br>12. Children's digital fibroma<br>13. Childhood Myofibromatosis<br>14. Aponeurotic calcifying fibroma<br>15. Atypical fibroxanthoma<br>16. Dermatofibrosarcoma protuberans<br>17. Giant cell fibroblastoma <br> <p><b>Chapter 26. Congenital melanocytic nevus and acquired</b></p>1. Congenital melanocytic nevus<br>2. Acquired melanocytic nevus: union, compound, intradermal<br>3. Ungular matrix melanocytic nevus<br>4. Spilus nevus<br>5. Miescher's Nevus<br>6. Spitz nevus<br>7. Meyerson Nevus<br>8. Sutton nevus or halo nevus<br>9. Becker's Nevus<br>10. Dysplastic or Clark's Nevus<br>11. Blue nevus <br> <p><b>Chapter 27. Neural and neuroendocrine neoplasms</b></p>1. Neurofibroma<br>2 Neurothecoma<br>3. Schwanoma<br>4. Granular cell tumor<br>5. Perineuroma<br>6. Tumor of the malignant peripheral nerve sheath<br>7. Merkel cell carcinoma<br>8. Nasal glioma<b> </b><br> <p><b>Chapter 28. Disorders of cells of langerháns and macrophages</b></p>1. Langerhans cell histiocytosis<br>2. Histiocytosis of non-Langerhans cells<br>3. Xanthomas <br> <p><b>Chapter 29. Malignant neoplasms</b></p>1. Actinic Keratosis<br>2. Adenoescamous carcinoma<br>3. Basal cell carcinoma<br>4. Basescamosal carcinoma<br>5. Keratoacanthoma<br>6. Bowen's disease<br>7. Queyrat Erythroplasia<br>8. Squamous cell carcinoma<br>9. Bowen's disease<br>10. Mastocytosis<br>11. Melanoma<br>12. Skin metastasis<br>13. Paget's disease 14. T-cell Lymphomaa. Lymphomatoid papulosisb. Leukemia / T-cell lymphomac. Mycosis fungoidesd. Primary gamma / delta cutaneous T-cell lymphomae. CD8 positive aggressive epidermotropic cytotoxic T cell lymphomaf. Nasal extraganglionic T / NK cell lymphomag. Paniculitis like T-cell lymphoma15. B-cell Lymphomaa. Primary cutaneous B-cell lymphoma of the marginal zone<br>b. Primary cutaneous central follicle lymphoma<br>c. Diffuse giant B-cell cutaneous lymphoma type leg<br>d. Intravascular diffuse giant B-cell lymphoma<br>e. B cell precursor lymphoblastic leukemia / lymphoma <br> <p><b>Chapter 30. Other lymphoproliferative disorders</b> </p>1. Plasmocytoid dendritic cell neoplasia<br>2. Jessner lymphocytic infiltrate<br>3. Lymphocytoma cutis<br>4. Extramedullary hematopoiesis<br>5. Leukemia complexion<br>6. Hodgkin's disease<br>7. Lymphomatoid granulomatosis<br><ol> </ol><b></b>