DermAtlas: Online Dermatology Image Library dermatology image,keratoacanthoma,psoriasis

© 2001-2009, DermAtlas	*Image Name:*	KERATOACANTHOMA_1_080318	*File Type:*	jpg
	*Diagnosis:*	KERATOACANTHOMA	*Category:*	lumps & bumps (plaques, nodules, tumors) / neoplasm, benign
	*Body Site:*	face	*Age:*	37 years
	*Contributor:*	Katsuya Hisamichi, MD
	*Description:*	1cm dome shaped nodule with central scale and crusting
	*Comments:*	This nodule grew quickly for 3 weeks before being evaluated. A skin biopsy revealed a keratoacanthoma.

© 2001-2009, DermAtlas	*Image Name:*	Keratoacanthoma_1_071126	*File Type:*	jpg
	*Diagnosis:*	KERATOACANTHOMA	*Category:*	neoplasm, benign
	*Body Site:*	forearm	*Age:*	54 years
	*Contributor:*	Jerzy Pawlak, MSc,PhD
	*Description:*	2 cm red nodule with central scaly plug
	*Comments:*	A rapidly growing tumor developed on the right forearm of this 54-year-old man over the preceding 2 months. Note the surrounding chronic actinic changes. Keratoacanthoma is rapidly growing benign epithelial neoplasm that simulates squamous cell carcinoma. It is impossible to make a definitive clinical distinction between keratoacanthoma and squamous cell carcinoma.

© 2001-2009, DermAtlas	*Image Name:*	keratoacanthoma_1_061214	*File Type:*	jpg
	*Diagnosis:*	KERATOACANTHOMA	*Category:*	neoplasm, benign
	*Body Site:*	forearm	*Age:*	52 years
	*Contributor:*	Shahbaz A. Janjua, MD
	*Description:*	2 cm diameter tumor with overlying ulceration
	*Comments:*	A 52-year-old man developed a rapidly growing tumor on his right forearm one month ago. The lesion was excised, and pathology confirmed a keratoacanthoma.

© 2001-2009, DermAtlas	*Image Name:*	keratoacanthoma_1_050505	*File Type:*	jpg
	*Diagnosis:*	KERATOACANTHOMA	*Category:*	lumps & bumps (plaques, nodules, tumors)
	*Body Site:*	forehead	*Age:*	67 years
	*Contributor:*	Bernard Cohen, MD
	*Description:*	1.5 cm pearly nodule with central umbilicated crust
	*Comments:*	This 67-year-oldl woman with a history of chronic actinic damage and basal cell carcinoma devloped a rapidly growing nodule on her forehead.

© 2001-2009, DermAtlas	*Image Name:*	keratoacanthoma_1_040819	*File Type:*	jpg
	*Diagnosis:*	KERATOACANTHOMA	*Category:*	neoplasm, benign
	*Body Site:*	cheek / face	*Age:*	90 years
	*Contributor:*	Nark K. Rho, MD
	*Description:*	2.5 cm tumor with crusted scaly umbilicated center
	*Comments:*	This 90-year-old woman was evaluated for a rapidly growing tumor on her right cheek. A skin biopsy revealed a keratoacanthoma.

© 2001-2009, DermAtlas	*Image Name:*	keratoacanthoma_1_030727	*File Type:*	jpg
	*Diagnosis:*	KERATOACANTHOMA	*Category:*	lumps & bumps (plaques, nodules, tumors)
	*Body Site:*	cheek / face	*Age:*	50 years
	*Contributor:*	Eric Ehrsam, MD
	*Description:*	1.5 cm dome shaped violaceous nodule with central crusting
	*Comments:*	A 50-year-old woman developed a rapidly growing tumor on her right cheek. The lesion was excised, and histopathology revealed a keratoacanthoma.

© 2001-2009, DermAtlas	*Image Name:*	Keratoacanthoma_1_030703	*File Type:*	jpg
	*Diagnosis:*	KERATOACANTHOMA	*Category:*	lumps & bumps (plaques, nodules, tumors) / neoplasm, benign
	*Body Site:*	shoulder	*Age:*	72 years
	*Contributor:*	Jenny Dunford
	*Description:*	hyperkeratotic warty 2 cm nodule
	*Comments:*	A 72-year-old man developed a tender dome shaped nodule on his shoulder. The nodule regressed 6 weeks later without therapy.

© 2001-2009, DermAtlas	*Image Name:*	Psoriasis_erythrodermic_6_030519	*File Type:*	jpg
	*Diagnosis:*	PSORIASIS / KERATOACANTHOMA	*Category:*	papulosquamous eruptions
	*Body Site:*	foot / sole	*Age:*	50 years
	*Contributor:*	Shahbaz A. Janjua, MD
	*Description:*	symmetric scaling and erythema.
	*Comments:*	This 50-year-old man had a several year history of asymptomatic symmetric scaling and erythema affecting his finger tips and soles that spreaded to the tops of the fingers and feet. He was initially misdiagnosed with tinea pedis, but he did not improve with a two weeks course of oral terbinafine 250 mg qd and topical miconazole cream. Later, he cleared with topical calcipotriol plus betamethasone dipropionate ointment.
	*Related Images:*	All related Images Psoriasis_erythrodermic_1_030519 Psoriasis_erythrodermic_2_030519 Psoriasis_erythrodermic_3_030519 Psoriasis_erythrodermic_4_030519 Psoriasis_erythrodermic_5_030519 Psoriasis_erythrodermic_7_030519

© 2001-2009, DermAtlas	*Image Name:*	keratoacanthoma_1_010804	*File Type:*	jpg
	*Diagnosis:*	KERATOACANTHOMA	*Category:*	neoplasm, benign
	*Body Site:*	chest	*Age:*	55 years
	*Contributor:*	Chris Ha, MD
	*Description:*	violaceous 2 cm nodule with a central umbilicated crust
	*Comments:*	A 55 year old woman developed a rapidly growing painful nodule with a central umbilicated crust on her chest.

© 2001-2009, DermAtlas	*Image Name:*	ka_2_010605	*File Type:*	jpg
	*Diagnosis:*	KERATOACANTHOMA	*Category:*	lumps & bumps (plaques, nodules, tumors)
	*Body Site:*	arm	*Age:*	48 years
	*Contributor:*	Bernard Cohen, MD
	*Description:*	pink nodule with central umbilicated scale
	*Comments:*	A 48 year old man with a history of chronic actinic damamge and immunosuppression associated with renal transplantaiton developed a rapidly growing pink tumor with a central dimple filled with scale. He has had multiple squamous cell carcinomas and keratoacanthomas on sun exposed sites since his renal transplant 10 years earlier.
	*Related Images:*	ka_1_010605

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© DermAtlas, Johns Hopkins University; 2000-2009
Bernard A. Cohen, MD, Christoph U. Lehmann, MD
DermAtlas was last updated: Oct-28-2009
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