Simple Diagnostic Tests for Subungual Pigmentation

Simple Diagnostic Tests for Subungual Pigmentation

Subungual pigmentation can have benign and malignant etiologies. A common and important differential diagnosis is between subungual hematoma and subungual acrolentiginous melanoma. We have introduced Dr. Eckert Haneke's technique and our Hydrogen Peroxide modification for distinguishing these entities clinically. Dr. Haneke's technique uses the hemocult reaction to detect hematoma from the spec...

Simple Diagnostic Tests for Spatial Dependence

Subungual Nail Pigmentation and Malalignment of the Great Toe Nail in a Cancer Patient - A Diagnostic Challenge

Subungual pigmentation may have a variety of underlying pathologies, but clinicians should consider malignancies such as subungual melanoma or metastasis, even if they are not common. A delayed diagnosis can dramatically worsen the prognosis. Therefore, histologic examination is highly recommended. We present a 75-year-old female cancer patient presenting with subungual blackish pigmentation of...

Subungual haematomas: is simple trephining enough?

OBJECTIVES To determine the outcome of treating subungual haematomas by simple trephining, in terms of nail appearance and function, and to identify factors associated with a poor outcome. METHODS Patients with subungual haematomas attending an accident and emergency department over a 12 month period were identified; 5-13 months after injury a telephone and postal survey of patient's assessme...

Evaluation and Computation of Diagnostic Tests: a Simple Alternative

Methods of evaluating and comparing the performance of diagnostic tests are of increasing importance in medical science. When a test is based on an observed variable that lies on a continuous scale, an assessment of the overall value of the test can be made through the use of a Receiver Operating Characteristic (ROC) curve. The ROC curve descibes the discrimination ability of a diagnosis test f...