Variation of Hair Follicle Counts among Different Scalp Areas: A Quantitative Histopathological Study

2021 ◽  
pp. 1-7 ◽  
Author(s):  
Suthinee Rutnin ◽  
Kumutnart Chanprapaph ◽  
Kallapan Pakornphadungsit ◽  
Kanchana Leerunyakul ◽  
Yingluck Visessiri ◽  
...  
Keyword(s):  
Gender Differences ◽  
Reference Values ◽  
Definitive Diagnosis ◽  
Histopathological Study ◽  
Hair Cycle ◽  
Biopsy Specimens ◽  
Histopathological Evaluation ◽  
Normal Hair ◽  
Scalp Biopsy ◽  
Vellus Hairs

<b><i>Introduction:</i></b> Scalp biopsy is a standard method for the definitive diagnosis of alopecia. The hair count parameters of each scalp area remain unclear. This study aimed to determine hair count values at different scalp locations from histopathology and to establish reference values for each part of the scalp. <b><i>Methods:</i></b> We obtained biopsy specimens from the frontal, vertex, temporoparietal, and occipital areas of the scalps of normal deceased subjects. All specimens were evaluated for the number of follicular units, hair counts, hair types, and stages of the hair cycle. <b><i>Results:</i></b> In total, 240 specimens were collected from 60 cadavers. Across all scalp sites, the temporoparietal area showed the lowest mean hair count, number of follicular units, terminal and vellus hairs, and terminal-to-vellus hair ratio. The average anagen-to-telogen hair ratio was comparable across all scalp sites. This study did not observe a significant association of hair parameters with gender differences or increasing age in all scalp areas. <b><i>Conclusions:</i></b> The present study revealed the diversity of the hair index among different scalp areas and suggested that normal hair count values should be separately standardized on each scalp region. Our findings may provide useful reference values for the histopathological evaluation of hair disorders in Asians.

Horizontal and vertical sections of scalp biopsy specimens from dermatomyositis patients with scalp involvement

2018 ◽  
Vol 78 (6) ◽  
pp. 1178-1184 ◽  
Author(s):  
Julio Jasso-Olivares ◽  
José Manuel Diaz-Gonzalez ◽  
Mariya Miteva
Keyword(s):  
Biopsy Specimens ◽  
Vertical Sections ◽  
Scalp Biopsy

Histopathological evaluation of liver biopsy specimens in children with chronic hepatitis B

2006 ◽  
Vol 34 (1) ◽  
pp. 9-14 ◽  
Author(s):  
I MOZERLISEWSKA ◽  
W SLUZEWSKI ◽  
A MANIA ◽  
B WALEWSKAZIELECKA ◽  
A BUJNOWSKA ◽  
...  
Keyword(s):  
Chronic Hepatitis ◽  
Hepatitis B ◽  
Liver Biopsy ◽  
Chronic Hepatitis B ◽  
Biopsy Specimens ◽  
Histopathological Evaluation

scholarly journals Histopathological Study of Endometrial Biopsy Specimens for Abnormal Uterine Bleeding

2016 ◽  
Vol 4 (2) ◽  
pp. 72
Author(s):  
Archana Tiwari ◽  
Narinder Kaur ◽  
Sushila Jain ◽  
Ramji Rai ◽  
Surendra Kumar Jain
Keyword(s):  
Light Microscopy ◽  
College Teaching ◽  
Abnormal Uterine Bleeding ◽  
Endometrial Biopsy ◽  
Uterine Bleeding ◽  
Histopathological Study ◽  
Medical College ◽  
Biopsy Specimens ◽  
Neoplastic Lesions ◽  
Post Menopausal

Introduction: Endometrial specimen for abnormal uterine bleeding (AUB) is the one of the commonest specimens received in histopathology laboratory. Histopathological characteristics of endometrial tissues, as assessed by light microscopy, remains the diagnostic standard for the management of AUB. The objective of study is to find out the histopathological pattern of endometrium in AUB in the light of clinical details.   Methods: This was a prospective observational study carried out in the department of Pathology, Lumbini Medical College Teaching Hospital for a period of two years from June 2014 to May 2016. Formalin fixed endometrial specimens were processed, paraffin embedded, sectioned at 3-4 µm, stained with hematoxylin and eosin, and studied under light microscopy along with their demographics. Data were collected, entered and analyzed using SPSS version 20.   Results: The study included 100 cases of endometrial biopsy specimens with clinical diagnosis of AUB. Menstrual disturbances was found in wide age range between 17-75 years with the mean age of 45 (SD=13.36) years. Menorrhagia was the commonest (n=60, 60%) clinical presentation. Most (n=85; 85 %) endometrium had non-neoplastic lesions. Among them, normal endometrial patterns were commonest (n=50, 50 %). Neoplastic lesions (n=15, 15%) were distributed in all menstruation status with majority in postmenopause (n=7, 7%) and included malignant cases (n=5, 5%) among others.   Conclusion: Post-menopausal bleeding was common presentation among women with malignant and premalignant disease which was present in 15% of the cases together. Timely evaluation of AUB  by histopathology can be life saving with early tissue diagnosis and management.

scholarly journals Primary Xanthoma of Femur: A Case Report

2015 ◽  
Vol 14 (4) ◽  
pp. 396-398
Author(s):  
Mohammad Ismail Hossain ◽  
AKM Shahabuddin Khan
Keyword(s):  
Medical Science ◽  
Fracture Site ◽  
Definitive Diagnosis ◽  
Lytic Lesion ◽  
Histopathological Study ◽  
Metastatic Lesions ◽  
Bone Disorder ◽  
Primary Bone ◽  
The Right ◽  
Primary Bone Tumours

Xanthoma of bone is a very rare benign bone disorder with features mimicking primary bone tumours or metastatic lesions and their definitive diagnosis is very difficult. This condition can occur in patients with both normal and abnormal lipid profiles. Xanthoma of femur in a normolipidemic patient is very rare. Histopathological study gives a definitive diagnosis. We report a case of a 17 year old patient who was hospitalized in orthopedic department for fracture of the right femur with a lytic lesion at the fracture site. The patient was normolipidemic and hypothyroid. The diagnosis of xanthoma was selected histomorphologically. The fracture was treated surgically by nailing and bone graft.Bangladesh Journal of Medical Science Vol.14(4) 2015 p.396-398

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