Quiz on Pigmentary Disorders

What is the most common site for melanoma arising from nevus of Ota?

1. Iris

2. Choroid

3. Retina

4. Epidermis

What is the preferred treatment for this condition [Figure 1]?

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Figure 1:

Greenish discoloration of nails.

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1. Oral itraconazole pulse

2. Ozenoxacin 1% cream

3. Oral terbinafine

4. Metronidazole 2% gel

Which of the following is the most common form of oculo-cutaneous albinism?

1. Type 1A

2. Type 2

3. Type 3

4. Type 4

Which of the following is not a melanocytic lesion?

1. Lentigo

2. Solar lentigo

3. Blue nevus

4. BAPoma

In acronym CUBED, “B” stands for?

1. Breslow’s index

2. Border

3. Brown-black pigmentation

4. Bleeding

Neuroectodermal melanolysosomal disease is a variant of?

1. Griscelli syndrome (type 1)

2. Waardenburg syndrome (type 1)

3. Chediak-Higashi Syndrome

4. Hermansky-Pudlak syndrome

Correlate Figure 2 and identify the condition in which this histopathological sign is seen?

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Figure 2:

Correlate both the images and identify the histo-pathological sign.

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1. Exogenous Ochronosis

2. Riehl’s Melanosis

3. Melasma

4. Ashy dermatosis

The presence of which element in the swimming pool causes greenish discoloration of hair?

1. Copper

2. Cobalt

3. Chromuim

4. Chlorine

Deficiency of which trace element causes Pseudo-albinism?

1. Magnesium

2. Copper

3. Selenium

4. Manganese

Microsatellosis in melanoma is defined as?

1. Atypical melanocytes >0.005 mm away from primary lesion

2. Atypical melanocytes >0.004 mm away from primary lesion

3. Atypical melanocytes >0.003 mm away from primary lesion

4. Atypical melanocytes >0.002 mm away from primary lesion

Extensive Mongolian spots can be seen in which syndrome?

1. Hurler syndrome

2. Hunter Syndrome

3. GM 1 Gangliosidosis

4. All of the above

What is the wavelength of Helium Neon laser used in Vitiligo?

1. 488

2. 633

3. 755

4. 355

In this technique of vitiligo surgery [Figure 3], what will be the size of punch to take graft from donor area?

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Figure 3:

Implantation of hair Grafts in vitiligo patch using FUE technique.

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1. 0.8 mm

2. 0.9 mm

3. 1 mm

4. 0.7 mm

A 60-year-old male with metabolic syndrome came with brown-black pigmentation over cheeks [Figure 4]. Based on dermoscopic findings, what is the likely diagnosis?

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Figure 4:

Dermoscopic image (Dermlite 4, non polarized mode, 10x magnification) of a brown black pigmentation over cheeks in a 60 years old male

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1. Melasma

2. Maturational hyperpigmentation

3. Solar Elastosis

4. Acanthosis nigrican

Correlate these images and identify the condition [Figure 5]

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Figure 5:

Correlate these 3 images.

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1. Reihl’s melanosis

2. Ashy dermatosis

3. Exogenous ochronosis

4. Lichen planus pigmentosus

Streaky hyperpigmentation as is seen in this patient [Figure 6], is most commonly caused by exposure to which plant family?

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Figure 6:

Streaky Hyper pigmentation over forearm and forehead.

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1. Apiaceae

2. Rutaceae

3. Moraceae

4. Hypericaceae

Penile lentigines are classically seen in?

1. Cronkhite-Canada syndrome

2. Touraine syndrome

3. Bannayan-Riley-Ruvalcaba syndrome

4. Laugier-Hunziker syndrome

Which amino acids are required for the formation of melanin in epidermis?

1. Tyrosine and phenylalanine

2. Tyrosine and cysteine

3. Tyrosine and leucine

4. Tyrosine and tryptophan

Vogt-Koyanagi-Harada syndrome is associated with which ophthalmic finding?

1. Retinal detachment

2. Lisch nodules

3. Corneal Opacities

4. Granulomatous Uveitis

Backers’s nevus can be associated with all of the following except?

1. Smooth muscle hamartoma

2. Unilateral breast hypoplasia

3. Skeletal defect

4. Heart defect

This proteolytic enzyme [Figure 7] which can be used after laser tattoo removal to help breakdown the ink, is derived from which fruit?

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Figure 7:

Chemical Structure of a proteolytic enzyme used after tattoo removal.

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1. Papaya

2. Pineapple

3. Orange

4. Grape

This famous personality [Figure 8] consumed a metal as a medicine for his dermatitis which led to slate grey pigmentation. This metal gets deposited in which part of skin?

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Figure 8:

Slate Grey discoloration of skin.

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1. Basement membrane of sebaceous gland

2. Basement membrane of Eccrine sweat gland

3. Basement membrane of apocrine sweat gland

4. Outer root sheath of hair follicle

Morsicatio buccarum results from which of the following?

1. Metal dental amalgam

2. Nicotine exposure

3. Keratin 4 and 13 mutations

4. Chronic irritation form biting

This patient on chemotherapy for non-Hodgkin lymphoma presented with this condition [Figure 9]. What is the source of drug causing this condition?

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Figure 9:

Streaky hyper pigmentation over back.

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1. Streptomyces verticillus

2. Streptomyces coelicolor

3. Streptomyces avermitillis

4. Streptomyces aureofaciens

b

b

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