| Adnexal Non Melanocytic Neoplasms Pathologymindmap.com |
 |
| |
 |
| |
 |
| |
 |
Adnexal Lesions
Chondroid Syringoma
Mostly face and neck
Looks like Mixed tumor of Salivary gland
Cylindroma
Mostly on head and neck
Apocrine origin
AKA “turban-like” or “hat-like”
Epithelial lobules fitting like “jigsaw puzzle”
Basement membrane-like material within and around lobules
Nevus sebaceous of Jadassohn
Childhood alopecia
Abortive follicular structures
Large Sebaceous units connected to epidermis
Verrucous hyperplasia
Pilomatricoma
AKA Calcifying Epithelioma of Malherbe
Usullay on Head and Neck
Well circumscribed
Small basaloid cells w/ abrupt keratinization
No granular layer
“Ghost or Shadow cells” (Keratinized cells)
Foreign body giant cell reaction & Calcification
Extramedullary hematopoiesis in some
Spiradenoma
Painful
Other painful skin lesions
Erythema Nodosum
Glomus tumor
Cutaneous Leiomyoma
Angiolipoma
Verruca Plantaris
Very cellular
2 cell types
Epithelial & Myoepithelial
Rich lymphocytic infiltrate
Prominent vessels (in some)
DDx: Vascular lesions, Thymoma or Metastasis
Syringoma
Benign eccrine gland tumor
Usually on the face (many on lower eyelids)
Cluster of small ducts w/ Comma shaped projections
“Tadpole-like”
Lined by 2 epithelial layers
Trichoepithelioma
Hair follicle origin
Mostly in children
No clefts (Unlike BCC)
papillary architecture (Unlike BCC)
laminated keratin in small cysts (Unlike BCC)
DDx: BCC
Chondroid Syringoma
Mostly face and neck
Looks like Mixed tumor of Salivary gland
Cylindroma
Mostly on head and neck
Apocrine origin
AKA “turban-like” or “hat-like”
Epithelial lobules fitting like “jigsaw puzzle”
Basement membrane-like material within and around lobules
Nevus sebaceous of Jadassohn
Childhood alopecia
Abortive follicular structures
Large Sebaceous units connected to epidermis
Verrucous hyperplasia
Pilomatricoma
AKA Calcifying Epithelioma of Malherbe
Usullay on Head and Neck
Well circumscribed
Small basaloid cells w/ abrupt keratinization
No granular layer
“Ghost or Shadow cells” (Keratinized cells)
Foreign body giant cell reaction & Calcification
Extramedullary hematopoiesis in some
Spiradenoma
Painful
Other painful skin lesions
Erythema Nodosum
Glomus tumor
Cutaneous Leiomyoma
Angiolipoma
Verruca Plantaris
Very cellular
2 cell types
Epithelial & Myoepithelial
Rich lymphocytic infiltrate
Prominent vessels (in some)
DDx: Vascular lesions, Thymoma or Metastasis
Syringoma
Benign eccrine gland tumor
Usually on the face (many on lower eyelids)
Cluster of small ducts w/ Comma shaped projections
“Tadpole-like”
Lined by 2 epithelial layers
Trichoepithelioma
Hair follicle origin
Mostly in children
No clefts (Unlike BCC)
papillary architecture (Unlike BCC)
laminated keratin in small cysts (Unlike BCC)
DDx: BCC