Histopathologic patterns of cutaneous malignancies in individuals with oculocutaneous albinism in Anambra state, Nigeria: a paradigm swing?

Background: A high proportion of skin cancers in Nigeria occur in Individuals with oculocutaneous albinism (OCA). A reduction or absence of melanin, a skin pigment with photoprotective properties, makes them susceptible to skin malignancies such as squamous cell carcinomas (SCCs), basal cell carcinomas (BCCs) and rarely melanomas. Globally, BCCs are the commonest cutaneous malignancies among Caucasians and in fair-skinned Africans.

Diversity of human lip prints: a collaborative study of ethnically distinct world populations.

Background: Cheiloscopy is a comparatively recent counterpart to the long established dactyloscopic studies. Ethnic variability of these lip groove patterns has not yet been explored.

Aim: This study was a collaborative effort aimed at establishing cheiloscopic variations amongst modern human populations from four geographically and culturally far removed nations: India, Saudi Arabia, Spain and Nigeria.

Prevalence of Linea nigra in patients with benign prostatic hyperplasia and prostate carcinoma.

Background: Linea nigra (LN) is linear hyperpigmentation occurring from the umbilicus to the pubic symphysis. Although commonly associated with pregnancy (when it is known as linea gravidarum), it has been found in normal male and female individuals, particularly in the younger age group where estrogen or lack of sensitivity of androgen receptors has been suggested as a possible factor. From a previous study the incidence of LN varied in different genders, age groups, and certain clinical status such as pregnancy and, in men, benign prostate hyperplasia (BPH)/prostate carcinoma (PC).

The incidence of lower mid-trunk hyperpigmentation (linea nigra) is affected by sex hormone levels.

The incidence of linea nigra was studied in 1,550 Nigerians of both sexes and of different age groups and among pregnant women and men with benign and malignant prostatic diseases over a nine-month period. From the study, it would appear that linea nigra increases in incidence from the age group 0-15 years (31.4%) to the age group 16-30 years (47.