Molluscum contagiosum

Molluscum contagiosum 

Updated: 02/15/2021

© Jun Wang, MD, PhD

General features
  • Most common in children (age 2-5) or immunocompromised
  • Caused by molluscum contagiosum virus (MCV)
  • MCV 1-4, MCV-1 most prevalent
  • MCV-2 most often sexually transmitted
  • Highly contagious
  • More common in skin, rare in genital tract
  • Likely self limited in immunocompetent patients
Clinical presentations
Key morphological features
Treatment
  • Based on age, health condition, etc
  • Cryotherapy
  • Curettage 
  • Others



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Contents

Pathology notes Jun Wang, MD, PhD 1. General information Frequently discussed syndromes Terms of dermatology Terms of hematology 2. Primary immunodeficiency disorders 3. Hemodynamic abnormalities Shock Thrombosis and embolism Bleeding disorders 4. Benign white cell disorders 5. Hematopoietic neoplasms Lymphoid neoplasms Myeloid neoplasms Histiocytic neoplasms: Langerhans cell histiocytosis 6. Cardiovascular system Pulmonary hypertension Cardiovascular system tumors 7. Respiratory tract tumors 8. Gastrointestinal tract Congenital disorders Infectious gastroenteritis Oral cavity Esophagus Stomach Intestinal tumors Salivary glands Exocrine pancreas and gallbladder 9. Urinary system Kidney masses Lower urinary tract 10. Male reproductive system 11. Female genital tract 12. Breast 13. Endocrine organs Pituitary gland Adrenal gland Thyroid gland Parathyroid gland Endocrine pancreas Multiple endocrine neoplasms 14. B
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Female genital tract

Pathology of female genital tract   Updated: 01/23/2024 © Jun Wang, MD, PhD Key anatomic features Opened channel, pathological basis for pelvic inflammatory disease Cervix: exocervix, endocervix, transformation zone Uterus: fundus, body Fallopian tube: intramural, isthmus, ampulla, infundibulum, fimbriae Placenta: umbilical cord, fetal membrane, placenta Key histologic features Stratified squamous epithelium from vulva to exocervix Simple columnar epithelium from endocervix to fimbriae Uterine corpus Endometrium: Glands, stroma Myometrium Perimetrium: Mesothelium/peritoneum Ovaries: three components Epithelium (mesothelium) Stroma Germ cells (follicles) Placenta: Cytotrophoblast, syncytiotrophoblast, intermediate trophoblast Infectious/inflammatory diseases Diseases of vagina and vulva Molluscum contagiosum Lichen sclerosus Paget disease Sarcoma botryoides Squamous cell carcinoma Diseases of cervix Cervical intraepithelial neopla
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Neoplasms of respiratory tract

Neoplasms of respiratory tract   Updated: 11/14/2022 © Jun Wang, MD, PhD Anatomy Nasal cavity Nasopharynx Oropharynx Laryngopharynx Larynx Trachea and bronchi Lungs Histology Squamous mucosa Respiratory mucosa May have abundant lymphoid tissue in pharynx Type I and Type II pneumocytes Key risk factors Human papillomavirus: Squamous cell carcinoma, squamous cell papilloma Epstein Barr virus: Nasopharyngeal carcinoma Smoking Tumors of nasal cavity and nasopharynx Olfactory neuroblastoma Nasopharyngeal angiofibroma Sinonasal papilloma NUT midline carcinoma Nasopharyngeal carcinoma Tumors or tumor like lesions of larynx Vocal cord polyp Squamous papilloma Squamous cell carcinoma Branchial pouch/cleft anomalies Branchial cyst Thyroglossal duct cyst Neoplasms of lung Squamous cell carcinoma Adenocarcinoma Large cell carcinoma Small cell carcinoma Carcinoid Lymphangioleiomyomatosis Neoplasms of pleura Mesothelioma
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