Diagnostic Pathology

4 Pityriasis Rosea
6 Contact Dermatitis
George R. Collins, DO
10 Atopic Dermatitis
12 Perniosis
14 Seborrheic Dermatitis
16 Erythema Multiforme and Related Disorders
20 Pityriasis Lichenoides
24 Acropustulosis of Infancy
26 Dermatitis Herpetiformis
28 Epidermolysis Bullosa, Inherited
32 Erythema Toxicum Neonatorum
34 Hailey-Hailey Disease
36 Chronic Bullous Disease of Childhood
38 Transient Neonatal Pustular Melanosis
40 Urticaria and Variants
44 Leukocytoclastic Vasculitis
48 Erythema Nodosum
52 Subcutaneous Fat Necrosis of Newborn
54 Sclerema Neonatorum
56 Lupus Erythematosus
62 Morphea/Scleroderma
66 Dermatomyositis
70 Calcinosis Cutis
74 Chalazion
76 Granuloma Annulare
78 Acne Vulgaris
80 Trichotillomania
84 Ichthyosis
86 Darier Disease
88 Porokeratosis
92 Incontinentia Pigmenti
94 Aplasia Cutis Congenita
96 Impetigo
100 Staphylococcal Scalded Skin Syndrome
102 Ecthyma and Ecthyma Gangrenosum
104 Cat-Scratch Disease
110 Atypical Mycobacterial Infections
112 Molluscum Contagiosum
114 Herpesvirus
116 Candidiasis
120 Bite Reactions
124 Scabies
126 Epidermal Inclusion Cyst
128 Dermoid Cyst
134 Necrotizing Fasciitis
136 Tumoral Calcinosis
140 Osteogenesis Imperfecta
144 Chondrodysplasia Punctata
148 Thanatophoric Dysplasia
150 Bone Fracture and Repair
154 Osteomyelitis
158 Stress and Costochondral Junction
160 Juvenile Idiopathic Arthritis
166 Spinal Muscular Atrophy
168 X-Linked Muscular Dystrophy: Duchenne and Becker
172 Congenital Myopathies
176 Cerebral Heterotopia and Ectopia
178 Focal Cortical Dysplasia
192 Myelomeningocele
194 Encephalocele
196 Tethered Cord
198 Cerebral Arteriovenous Malformations
202 Cerebral Cavernous Malformation
206 Hypoxic-Ischemic Encephalopathy
210 Periventricular Leukomalacia
214 Arachnoid Cysts
216 Meningioangiomatosis
222 Germinal Matrix-Intraventricular Hemorrhage
226 Bacterial Meningoencephalitis
232 Fungal Meningoencephalitis
238 Viral Meningoencephalitis
242 Protozoal Meningoencephalitis
248 Adrenal Cytomegaly
250 Adrenal Heterotopia
252 Adrenal Hypoplasia and Malformations
254 Adrenal Cortical Hyperplasia
264 Ectopic Thyroid
266 Thyroglossal Duct Cyst
268 Cystic Fibrosis, Pancreas
270 Stress Reactions in Adrenal Gland
272 Hemorrhagic Necrosis of Adrenal Gland
274 Chronic Lymphocytic Thyroiditis
278 Graves Disease
284 Hypertrophy of Pancreatic Islets
288 Bronchogenic Cyst
290 Congenital Alveolar Capillary Dysplasia
294 Congenital Lobar Emphysema
296 Congenital Pulmonary Lymphangiectasis
298 Diffuse Pulmonary Lymphangiomatosis
302 Congenital Pulmonary Airway Malformation
306 Congenital Surfactant Deficiency
310 Cystic Fibrosis
314 Sequestrations
316 Aspiration
320 Asthma
322 Bronchopulmonary Dysplasia
326 Hyaline Membrane Disease
328 Interstitial Pulmonary Emphysema
330 Persistent Pulmonary Hypertension
332 Idiopathic Pulmonary Hemosiderosis
334 Pulmonary Venoocclusive Disease/Pulmonary Capillary Hemangiomatosis
338 Nonspecific Interstitial Pneumonia
340 Hypersensitivity Pneumonitis
342 Eosinophilic Pneumonia
346 Adenovirus
348 Human Metapneumovirus
352 Respiratory Syncytial Virus
354 Neuroendocrine Cell Hyperplasia of Infancy
358 Arrhythmogenic Right Ventricular Cardiomyopathy
362 Hypertrophic Cardiomyopathy
364 Dilated Cardiomyopathy
368 Fabry Disease
372 Fatty Acid Metabolic Disorders
374 Glycogen Storage Diseases
376 Mitochondrial Myopathies
380 Capillary Malformations
384 Lymphatic Malformations
388 Venous Malformations
392 Arteriovenous Malformations and Fistulas
396 Endocardial Fibroelastosis
398 Lymphocytic Myocarditis
402 Acute Pericarditis
406 Acute Rheumatic Fever
410 Kawasaki Disease
414 COVID-19-Related Pathology and Pediatric Multisystem Inflammatory Syndrome
426 Inlet Patch
430 Tracheoesophageal Fistula and Esophageal Atresia
434 Esophageal Duplication Cyst
438 Gastroesophageal Reflux Disease
444 Eosinophilic Esophagitis
450 Candida
452 Chemical Gastropathy
456 Chronic Gastritis
458 Granulomatous Gastritis
462 Lymphocytic Gastritis
468 Eosinophilic Gastroenteritis
470 Fundic Gland Polyp
472 Collagenous Gastritis
476 Helicobacter heilmannii Gastritis
478 Helicobacter pylori Gastritis
482 Small Intestine Duplication Cyst
484 Ectopic Pancreas
488 Gastric Heterotopia
490 Meckel Diverticulum
492 Microvillous Inclusion Disease
494 Primary Intestinal Lymphangiectasia
496 Abetalipoproteinemia
500 Tufting Enteropathy
504 Autoimmune Enteropathy
508 Celiac Disease
514 Common Variable Immunodeficiency
518 Giardia
520 Cryptosporidium
522 Acute Appendicitis
526 Granulomatous Appendicitis
528 Enterobius Vermicularis Appendicitis
530 Fibrous Obliteration
532 Cystic Fibrosis, Intestinal
534 Colonic Duplications, Cysts, and Congenital Diverticula
538 Hirschsprung Disease
544 Intestinal Motility Disorders
546 Diversion Colitis
548 Pneumatosis Intestinalis
554 Solitary Rectal Ulcer Syndrome/Mucosal Prolapse
560 Necrotizing Enterocolitis
562 Eosinophilic/Allergic Colitis
568 Focal Active Colitis
570 Crohn Disease
582 Ulcerative Colitis
590 Collagenous Colitis
598 Cytomegalovirus
604 Entamoeba Histolytica
606 Adenovirus
608 Acute Infectious Colitis
610 Pseudomembranous Colitis
616 Congenital Hepatic Fibrosis
618 Caroli Disease
620 Cystic Fibrosis, Hepatic
624 Dubin-Johnson Syndrome
626 Gilbert Disease
628 Progressive Familial Intrahepatic Cholestasis
636 Biliary Atresia
642 Syndromic Paucity of Intrahepatic Bile Ducts (Alagille Syndrome)
646 Paucity of Intrahepatic Bile Ducts (Nonsyndromic)
650 Autoimmune Hepatitis
656 α-1-Antitrypsin Deficiency
660 Glycogen Storage Disease
666 Niemann-Pick Disease
668 Tyrosinemia
670 Gaucher Disease
672 Neonatal Hemochromatosis
674 Wilson Disease
680 Choledochal Cyst
682 Intestinal Failure-Associated Liver Disease (Total Parenteral Nutrition Injury)
686 Neonatal Hepatitis
690 Reye Syndrome
692 Nonalcoholic Fatty Liver Disease and Nonalcoholic Steatohepatitis
696 Primary Sclerosing Cholangitis
700 Venoocclusive Disease
702 Drug-Related Acute Hepatitis
706 Viral Hepatitis
710 Epstein-Barr Virus
714 Herpes Simplex Virus Hepatitis
716 Cytomegalovirus
720 Congenital Nephrotic Syndrome
726 Diffuse Mesangial Sclerosis
732 Minimal Change Disease
740 Focal Segmental Glomerulosclerosis
752 Acute Postinfectious Glomerulonephritis
760 Membranoproliferative Glomerulonephritis
768 C3 Glomerulonephritis
774 Dense Deposit Disease
780 Systemic Lupus Erythematosus
798 IgA Nephropathy
808 Henoch-Schönlein Purpura Nephritis
816 Thin Basement Membrane Nephropathy
820 Alport Syndrome
830 Acute Tubular Injury
836 Acute Pyelonephritis
844 Tubulointerstitial Nephritis With Uveitis
848 Primary Hyperoxaluria
850 Fibromuscular Dysplasia (Renal Artery Stenosis)
856 Hemolytic Uremic Syndrome, Infection Related and Atypical
862 Vasculitis, ANCA Related
868 Reflux Nephropathy
872 Polycystic Kidney Disease, Autosomal Recessive
876 Polycystic Kidney Disease, Autosomal Dominant
880 Medullary Cystic Kidney Disease/Nephronophthisis
882 Renal Dysplasia
886 Renal Tubular Dysgenesis
888 Ask-Upmark Kidney
890 Accessory Breast Tissue
892 Cryptorchidism
896 Testicular Regression Syndrome
898 Disorders of Sexual Development
906 Hidradenitis Suppurativa
908 Childhood Behçet Disease
912 Adnexal (Ovarian) Torsion
914 Meconium Periorchitis
916 Testicular Torsion
918 Ovarian Cysts
924 Reactive Follicular Hyperplasia
930 Reactive Paracortical Hyperplasia
938 Progressive Transformation of Germinal Centers
944 Hyaline-Vascular Castleman Disease
950 Dermatopathic Lymphadenitis
956 Kimura Disease
964 Kikuchi-Fujimoto Disease
974 Rosai-Dorfman Disease
984 Infectious Mononucleosis Lymphadenitis
988 Cat-Scratch Disease
994 Mycobacterial Infection
1002 Chronic Granulomatous Lymphadenitis
1010 Toxoplasma Lymphadenitis
1016 Chediak-Higashi Syndrome
1020 Congenital Amegakaryocytic Thrombocytopenia
1024 Congenital Thrombotic Thrombocytopenic Purpura
1028 Congenital Erythrocytosis
1032 Diamond-Blackfan Anemia
1036 Hereditary Spherocytosis
1042 Hereditary Elliptocytosis
1046 Fanconi Anemia
1050 Pyruvate Kinase Deficiency
1052 Shwachman-Diamond Syndrome
1056 Severe Congenital Neutropenia and Cyclic Neutropenia
1060 Sickle Cell Anemia
1064 Hemophagocytic Lymphohistiocytosis
1074 Thalassemia
1080 Infectious Mononucleosis Syndromes
1090 Parvovirus B19 Infection
1094 Transient Erythroblastopenia of Childhood
1096 Acute Thymic Involution