It typically presents as a solitary black nodule that has been present for nearly 6 years and has increased to a diameter of 2 or more centimeters. It is most commonly located on either the head and neck or the trunk. [pubmed.ncbi.nlm.nih.gov]

The lesions progressively became raised, verrucous and deeply pigmented and continued to enlarge gradually until her presentation. She did not report any discomfort or itching associated with the lesions. [ijdvl.com]

He had been suffering from tuberculosis of chest in the past and presently from bronchial asthma and mild depression. On systemic examination no relevant abnormality was found. [ncbi.nlm.nih.gov]

Here, we report the first case of cutaneous melanoacanthoma presenting with an ulcerated plaque and the third case of cutaneous melanoacanthoma with multiple lesions. [bioline.org.br]

• Keratosis

  Melanoacanthoma is a variant of seborrheic keratosis so the distinction is not critical Some might sign out melanoacanthoma as seborrheic keratosis, or might use melanoacanthoma with the additional descriptor of 'benign variant of seborrheic keratosis [pathologyoutlines.com]

  Abstract Melanoacanthoma denotes a rare variant of pigmented seborrheic keratosis. [ncbi.nlm.nih.gov]

  Keywords: Melanoacanthoma, seborrheic keratosis, pigmented seborrheic keratosis, melanoma, malignant melanoma, dermoscopy How to cite this article: Shankar V, Nandi J, Ghosh K, Ghosh S. Giant melanoacanthoma mimicking malignant melanoma. [e-ijd.org]

  The pathogenesis of a melanoacanthoma remains to be established; many researchers consider it to be a variant of seborrheic keratosis. [pubmed.ncbi.nlm.nih.gov]

  A short review of the literature is followed by the discussion of the relationship between melanoacanthoma and irritated seborrheic keratosis. © 1975 S. [karger.com]

• Papule

  Garg1, Sudhanshu Sharma1, Shruti Dewan1, Nidhi Mahajan2 Introduction Melanoacanthoma is a rare, benign, mixed tumor which clinically presents as an asymptomatic slowly-growing, raised, deeply pigmented, verrucous-surfaced, firm, round to oval plaque, papule [ijdvl.com]

  699) 65 year old man with giant melanoacanthoma mimicking melanoma (Indian J Dermatol 2011;56:79) Clinical images Images hosted on other servers: Oval lesion of maximum transverse diameter 10 cm   Ulcerated plaque Gross description Pigmented plaque, papule [pathologyoutlines.com]

  Key words: Melanoacanthoma, multifocal, ulceration INTRODUCTION Melanoacanthoma is a rare, benign, mixed tumor which clinically presents as an asymptomatic slowlygrowing, raised, deeply pigmented, verrucoussurfaced, firm, round to oval plaque, papule [bioline.org.br]

  The basaloid cells formed well-defined islands and numerous melanocytes were scattered throughout the lesion (H&E stain: 400×) Discussion Cutaneous melanoacanthomas manifest as pigmented papules, plaques, cutaneous horns or nodules. [ncbi.nlm.nih.gov]

  Click here to view Figure 3: The basaloid cells formed well-defined islands and numerous melanocytes were scattered throughout the lesion (H&E stain: 400×) Click here to view Cutaneous melanoacanthomas manifest as pigmented papules, plaques, cutaneous [e-ijd.org]

Literature on melanoacanthoma usually refers to its origin, clinical features and histopathological characteristics with paucity of literature on the treatment options. There is no effective medical treatment available for cutaneous melanoacanthoma. [ijdvl.com]

Conservative excision of melanoacanthoma is the treatment of choice since incomplete removal of the tumor can result in persistence and continued growth or recurrence of the lesion. [pubmed.ncbi.nlm.nih.gov]

Sections Continuing Education Activity Introduction Etiology Epidemiology Pathophysiology Histopathology History and Physical Evaluation Treatment / Management Differential Diagnosis Prognosis Complications Deterrence and Patient Education Pearls and [pubmed.ncbi.nlm.nih.gov]

Possible etiologic factors in the development of a melanoacanthoma include secondary colonization of melanocytes, irritation-induced maturation of basal cells into squamous cells that block melanin transfer from the melanocytes into the keratinocytes, [pubmed.ncbi.nlm.nih.gov]

Sections Continuing Education Activity Introduction Etiology Epidemiology Pathophysiology Histopathology History and Physical Evaluation Treatment / Management Differential Diagnosis Prognosis Complications Deterrence and Patient Education Pearls and [pubmed.ncbi.nlm.nih.gov]

Sections Continuing Education Activity Introduction Etiology Epidemiology Pathophysiology Histopathology History and Physical Evaluation Treatment / Management Differential Diagnosis Prognosis Complications Deterrence and Patient Education Pearls and [pubmed.ncbi.nlm.nih.gov]