Chapter 9 – Penis and scrotum                                              

9.1 Bowenoid papulosis
           9.1.1 Macroscopy
           9.1.2 Microscopy
                     9.1.2.1 differentiated entraepithelial neoplasia-like
                     9.1.2.2 undifferentiated condylomatous intraepithelial neoplasia-like
                     9.1.2.3 undifferentiated basaloid intraepithelial neoplasia-like
                     9.1.2.4 undifferentiated mixed condylomatous/basaloid intraepithelial neoplasia-like              
9.2 Condyloma acuminatum
9.3 Cowper’s gland
9.4 Crohn’s disease (metastatic)
9.5 Extrammary Paget disease
9.6 Fibrous hamartoma of infancy (scrotum)
9.6a Fournier’s gangrene
9.7 Hemangioendothelioma (epithelioid)
9.8 Histology
9.8.1 Corpus cavernosus
9.8.2 Corpus spongiosus
9.9 Hyperplasia (epithelial)
          9.9.1 Typical
          9.9.2 Pseudocarcinomatous (associated with inflammation)
9.10 Intraepithelial neoplasia (Bowen’s disease, Erythroplasia of Queyrat)
          9.10.1 differentiated
          9.10.2 undifferentiated condylomatous
          9.10.3 undifferentiated basaloid
          9.10.4 mixed: condylomatous + basaloid
          9.10.5 mixed: differentiated + basaloid  
9.11 Kaposi’s sarcoma
9.12 Lichen sclerosus et atrophicus (balanitis xerotica obliterans)
9.13 Lipogranulomas
9.13a Lymphangioma of the scrotum
9.13b Massive localized lymphedema of the scrotum associated with obesity
9.14 Median raphe cyst (apocrine cystadenoma)
9.15 Melanoma
9.16 Metastasis (from adenocarcinoma of the prostate)
9.17 Myiasis
9.18 Molluscum  contagiosum
9.19 Neuroma
9.20 Peyronie’s disease
9.21 Priapism (associated with sickle cell disease)
9.22 Squamous cell carcinoma
          9.22.1 Macroscopy
         9.22.2 Microscopy
                     9.22.2.1 Usual type
                     9.22.2.2 Basaloid
                     9.22.2.3 Condilomatous
                     9.22.2.4 Sarcomatoid (spindle cell)
                     9.22.2.5 Verrucous
9.23 Tuberculosis
9.24 Verruciform xanthoma (scrotum)