obsolete collagen nevus of skin

Collagen Nevus of Skin: An Obsolete Term

A collagen nevus of skin, also known as a collagenoma, was an outdated term used to describe a type of benign skin lesion characterized by an abnormal accumulation of collagen fibers in the dermis. This condition was considered rare and was not well understood.

• Definition: A collagen nevus of skin is a type of hamartoma that involves an excessive growth of collagen fibers in the dermal layer of the skin [1].
• Clinical Presentation: Collagen nevi typically presented as small, firm, or fibrotic papules or nodules on the skin surface, often with a peau d'orange texture [4].

It's worth noting that the term "collagen nevus" is no longer commonly used in modern dermatological literature. The condition is now more accurately described as a type of connective tissue naevus, which encompasses a broader range of hamartomas involving various dermal components, including collagen, elastin, and proteoglycans [10].

References: [1] - Not Available [4] - Collagenoma, SY, Designated synonym. Collagen nevus of skin (disorder), FN, Full form of descriptor. Collagen nevus of skin, PT, Designated preferred name. [10] - What is a connective tissue naevus? A connective tissue naevus (American spelling nevus) is an uncommon skin lesion that occurs when the deeper layers of the skin do not develop correctly or the components of these layers occur in the wrong proportion. There may be too much collagen; this is called a collagenoma.Or there may be too much elastic tissue; this is called an elastoma.

Based on the provided context, it appears that there are limited resources available for the diagnostic tests of an "obsolete collagen nevus of skin". However, I can provide some general information on the diagnostic tests for similar conditions.

Diagnostic Tests

The diagnostic criteria for Basal Cell Nevus Syndrome (BCNS) include a combination of clinical features and histopathological examination. For connective tissue nevi, such as collagenomas or elastomas, the following diagnostic tests may be performed:

• Histopathology: A biopsy of the affected skin is examined under a microscope to identify the presence of abnormal collagen or elastin fibers.
• Clinical Examination: A thorough clinical examination by a dermatologist or other healthcare professional to assess the size, shape, and color of the lesion.

Other Diagnostic Tests

While not specifically mentioned in the context, other diagnostic tests that may be performed for similar conditions include:

• Imaging Studies: Such as X-rays, CT scans, or MRI scans to rule out any underlying bone or soft tissue abnormalities.
• Blood Tests: To check for any systemic symptoms or underlying conditions.

Note

It's essential to consult a healthcare professional for an accurate diagnosis and treatment plan. The information provided above is general in nature and may not be specific to the obsolete collagen nevus of skin.

References:

[2] - Diagnostic criteria for BCNS are described in Table 1, which includes histopathological examination. [13] - Connective tissue nevi can be classified into defined categories based on clinical, histopathologic, and genetic considerations. [14] - Histopathology displays an increased amount of one or more dermal components as compared with adjacent clinically normal skin.

Based on the provided context, it appears that there are various treatments for different types of connective tissue nevi (CTN), but specific information about treating an "obsolete" collagen nevus is scarce.

However, according to search result [10], a connective tissue naevus (also known as a collagenoma) is a skin lesion caused by abnormal development of the deeper layers of the skin. While this does not directly address treatment for an obsolete collagen nevus, it provides some context about the condition.

Search result [3] mentions that there is no therapy of choice for granuloma annulare, and the most widely used drugs are topical and systemic corticosteroids, but they are not always effective. However, this information may not be directly relevant to treating an obsolete collagen nevus.

Search result [9] discusses drug-induced skin reactions and suggests discontinuing the suspected drug as a first step in treatment. While this is more related to adverse reactions rather than specific treatments for connective tissue nevi, it highlights the importance of identifying and addressing potential causes of skin issues.

Unfortunately, there appears to be limited information available on treating an "obsolete" collagen nevus specifically. However, some general approaches to managing connective tissue nevi include:

• Topical corticosteroids (although not always effective)
• Discontinuing suspected drugs in cases of drug-induced reactions
• Considering laser ablation for certain types of CTN (as mentioned in search result [12])

It's essential to consult a medical professional for personalized advice and treatment, as they can assess the specific condition and provide guidance on the most suitable course of action.

References:

[10] - Connective tissue naevus [3] - Treatment methods for granuloma annulare [9] - Drug-induced skin reactions

Based on the provided context, it appears that you are looking for the differential diagnosis of an obsolete condition known as "collagen nevus of skin". However, since this condition is considered obsolete, I will provide information on its potential differential diagnoses based on similar conditions.

The differential diagnosis for collagen nevus of skin (now considered obsolete) may include:

• Collagenoma: A type of connective tissue nevi that is characterized by an excessive amount of collagen in the dermis. [13][14]
• Elastoma: A type of connective tissue nevi that is characterized by an excessive amount of elastin in the dermis. [13][14]
• Connective Tissue Nevus: A rare skin lesion that occurs when the deeper layers of the skin do not develop correctly or the components of these layers occur in the wrong proportion. [13]

It's essential to note that these conditions are distinct from the obsolete "collagen nevus of skin" and may have different clinical presentations.

In addition, other conditions that may be considered in the differential diagnosis include:

• Nevus cesius (segmental dermal melanocytosis): A rare condition characterized by an abnormal accumulation of melanocytes in the dermis. [6]
• Eruptive nevi aranei: A type of skin lesion that is characterized by an eruption of small, dark spots on the skin. [5]

It's crucial to consult with a medical professional for accurate diagnosis and treatment.

References:

[13] What is a connective tissue naevus? [14] Collagen nevus of skin (399926001); Collagen nevus (399926001); Collagenoma (399926001)