http://www.histopathology-india.net/SebTum.htm

Skin Adnexal (Appendage) Tumours

Benign Sweat Gland Tumours

Apocrine/Eccrine Hidrocystoma

Hamartomas

Chondroid syringoma

Syringoma

Syringocystadenoma Papilliferum   

Hidradenoma Papilliferum 

Nipple Adenoma

Cylindroma  

Spiradenoma

Poroma 

Hidradenoma

Papillary Eccrine Adenoma

Apocrine Adenoma

Classification of Malignant Sweat Gland Tumours 

Mucinous carcinoma

Mucinous carcinoma(abstracts)

Porocarcinoma

Extramammary Paget's disease

Digital papillary adenocarcinoma

Microcystic adnexal carcinoma

Apocrine carcinoma

Cutaneous adenoid cystic carcinoma

Hidradenocarcinoma

Spiradenocarcinoma            

Syringomatous ca(eccrine epithelioma)

Eccrine ductal carcinoma

Clear cell carcinoma

Tumours of the Hair Follicle

Trichoepithelioma

Trichofolliculoma

Trichoblastoma

Cutaneous lymphadenoma

Trichoadenoma

Pilar Sheath Acanthoma

Tumour of the Follicular Infundibulum

Trichilemmoma

Trichilemmal Carcinoma 

Proliferating Trichilemmal Tumour

Pilomatrixoma

Sebaceous tumours

Fordyce's Spots

Steatocystoma

Nevus Sebaceous

Folliculosebaceous Cystic Hamartoma

Sebaceous Hyperplasia

Sebaceoma

Sebaceous Adenoma

Sebaceous Carcinoma

Acquired Melanocytic Naevus

Ancient Naevus

Halo naevus

Balloon cell naevus

Mongolian Spots /Ota's naevus /Ito's naevus

Blue naevus-variants

Deep penetrating naevus  

Combined Naevus

Recurrent naevus

Spitz naevus

Dysplastic naevus

Congenital naevus

Spindle cell naevus

Ectopic sebaceous glands without attached hair follicle may be present near mucocutaneous junction. 

Clinical presentation:   The incidence of Fordyce's granules increases from childhood to adulthood, and is slightly higher in men. Presents as tiny yellow papules.  Dermatopathology Case

Site:  Fordyce's Spots - Present along vermillion border of the lips or on the oral mucosa.

Montgomery's tubercle-  Normal sebaceous glands are distributed along a circle in the periphery of the areola of the breast.

Ectopic sebaceous glands are occasionally found in other sites - 

Eg:  Esophagus;  penis;  labia minora ; vagina

Normal sebaceous glands on the vermilion border of the lips and the oral mucosa are common in adults. Only pathologic sebaceous glands visible through the epithelium should be regarded as Fordyce's granules.

Microscopic features:  Image Link1 ; Image Link2 ; Image Link3 ; Image Link4 .    

Histology shows a single sebaceous gland lesion consisting of single or a group of small but mature sebaceous lobules around small sebaceous duct extending to the surface epithelium. No associated hair follicles are seen.

Image

Differential diagnosis: Sebaceous hyperplasia (enlarged sebaceous glands with numerous lobules around a centrally located wide duct).

Abstracts:

Sebaceous adenoma of oral cavity: report of case and comparative proliferation study with sebaceous gland hyperplasia and Fordyce's granules.Oral Dis 2003;9(6):323-7

Hyperplasia of sebaceous glands (Fordyce's disease) in an oral mucocutaneous graft: 45-year follow-up. Klin Monatsbl Augenheilkd. 1999;214(3):185-7.

Heterotopic sebaceous glands in the esophagus: histopathological and immunohistochemical study of a resected esophagus.Pathol Int. 1999 Apr;49(4):364-8.

Fordyce spots. A little regarded finding in the area of lip pigmentation and mouth mucosa. Laryngorhinootologie. 1995;74(6):390-2.

Areolar sebaceous hyperplasia with a Fordyce's spot-like lesion. J Dermatol. 1994 Jul;21(7):524-6.

Ectopic gingival sebaceous glands presenting as localized periodontitis. J Periodontol. 1990;61(1):58-60.

Fordyce's granules in the oral mucosa of adult Israeli Jews.Community Dent Oral Epidemiol. 1986 Aug;14(4):231-2.

Montgomery's areolar tubercle. A light microscopic study.Arch Pathol Lab Med. 1982;106(2):60-3.

Fordyce's spots: disease, heterotopia or adenoma? Histological and ultrastructural study. J Biol Buccale. 1981 ; 9(2):109-28.  

Fordyce's condition of the buccal mucosa and perimamillary region. Hautarzt. 1971 Jun;22(6):263-4.

Prognostic parameters of melanoma

Lentigo maligna melanoma

Superficial spreading melanoma

Nodular melanoma

Acral lentiginous melanoma

Desmoplastic melanoma

Naevoid melanoma

Balloon cell melanoma

Epidermal tumours

Epidermal Naevus

Prurigo Nodularis

Acanthomas

Clear cell acanthoma

Large cell acanthoma

Warty Dyskeratoma

Seborrheic Keratosis

Verruca vulgaris

Keratoacanthoma

Actinic Keratosis

Bowen's disease

Basal Cell Carcinoma

Squamous Cell Carcinoma