Christopher Obiorah

University of Port Harcourt

Also at University of Port Harcourt Teaching Hospitalfrom their recent papers

Publishing since 2007, latest 2025

Oncology
Pulmonary and Respiratory Medicine
Surgery
Epidemiology
Pediatrics, Perinatology and Child Health
Gastroenterology

Their record on OpenAlex

Publications: 222007–2025
Citations: 201to those papers
h-index: 6i10-index 5
Field-weighted impact: 0.431.00 is the world average
World top 10%: 0%0 of 22 scored papers
Open access: 86%19 papers free to read

1 other work — a preprint, a dataset or the like — is listed but not counted.

By year

Papers, and the citations to them

Publications, left axisCitations to that year’s papers, right axis2026 still in progress

Career

On their papers

Every institution they have given on a paper.

Publications

22 in all

Non-neoplastic Bone Marrow Lesions in an Adult Population in Two Tertiary Institutions in Rivers State, Nigeria
2025Journal0 citations10.9734/ahrj/2025/v8i1191
Analysis of the genomic landscapes of Barbadian and Nigerian women with triple negative breast cancer
2022Cancer Causes & ControlJournalOpen access

Download CV:PDFWord

Citations received each year

Peerford

To all their work, old papers included. Google Scholar also counts citations from theses, books and web pages, so its line runs higher.

What they work on

From the classification of each paper

Subfields

Oncology732%
Pulmonary and Respiratory Medicine627%
Surgery418%
Epidemiology314%
Pediatrics, Perinatology and Child Health314%
Gastroenterology29%
Genetics29%
Health Information Management29%
Molecular Biology29%
Nephrology29%

Health Sciences
Life Sciences

Topics most written on

Global Cancer Incidence and Screening5
Cervical Cancer and HPV Research3
Colorectal Cancer Screening and Detection3
Helicobacter pylori-related gastroenterology studies3
Prostate Cancer Diagnosis and Treatment3
BRCA gene mutations in cancer2
Eosinophilic Esophagitis2
Global Health and Epidemiology2
Renal Diseases and Glomerulopathies2
Urinary Bladder and Prostate Research2
Advances in Oncology and Radiotherapy1
AI in cancer detection1

Who they write with

Their most frequent co-authors, and the papers those co-authors share

Where their co-authors are

18% of their papers have a co-author abroad

papers co-written1234567Home

Most frequent partner countries

United States4
Barbados1
Canada1
China1
France1
United Kingdom1
Jamaica1

Papers with at least one author in that country.

Institutions written with most

University of Port Harcourt Teaching HospitalNG21 papers
University Of Calabar Teaching HospitalNG3 papers
Institute of Human VirologyNG3 papers
University of Nigeria Teaching HospitalNG3 papers
Nnamdi Azikiwe University Teaching HospitalNG3 papers
University of Maryland, BaltimoreUS2 papers
University of Benin Teaching HospitalNG2 papers
Lagos State University Teaching HospitalNG2 papers
Lagos University Teaching HospitalNG2 papers
National Hospital AbujaNG2 papers

Where they publish

Afrischolar Discovery4
African Journal of Nephrology2
Cancer Epidemiology2
Cancer Causes & Control1
Cureus1
Frontiers in Public Health1
International Journal of Clinical Medicine

Development goals addressed

From each paper’s title and abstract

3Good health and well-being17
2Zero hunger1
9Industry, innovation and infrastructure1
17Partnerships for the goals1

Most cited

The role of hospital-based cancer registries in low and middle income countries—The Nigerian Case Study
Cancer Epidemiology
201274 citationsOpen access · Green
Developing National Cancer Registration in Developing Countries – Case Study of the Nigerian National System of Cancer Registries
Frontiers in Public Health17
201557 citationsOpen access · Gold
A 3-year retrospective review of mortality in women of reproductive age in a tertiary health facility in Port Harcourt, Nigeria

Colorectal Cancer in Niger Delta, Nigeria: Multi-centre lower Gastrointestinal Endoscopy Study.

2020Zenodo (CERN European Organization for Nuclear Research)JournalOpen access1 citation10.5281/zenodo.3669422

Cardiovascular System Mortalities in Nigeria; Case Study of the University of Port Harcourt Teaching Hospital

2019World Journal of Cardiovascular DiseasesJournalOpen accessFirst authorCorresponding3 citations10.4236/wjcd.2019.912077

Breast cancer in Rivers State, Nigeria: Ten-year review of the Port Harcourt cancer registry

2019South African Journal of OncologyJournalOpen accessFirst author3 citations10.4102/sajo.v3i0.58

The Role of Dutasteride in Acute Prostatic Haematuria

2017International Journal of Clinical MedicineJournalOpen accessSenior author3 citations10.4236/ijcm.2017.811056

P-Selectin As A Marker of Platelet Activation in Africans with Prostate Cancer: A Cross-Sectional Study.

2016IOSR Journal of Dental and Medical SciencesJournalOpen accessSenior author1 citation10.9790/0853-1509036770

Upper gastro-intestinal endoscopy in Port-Harcourt, Nigeria: an Audit

2015Afrischolar DiscoveryJournalOpen accessSenior author2 citations10.60787/tnhj.v14i3.171

Upper Gastro-Intestinal Endoscopy in Port-Harcourt: An Audit

2015Afrischolar DiscoveryJournalOpen accessSenior author0 citations10.60787/tnhj.v13i4.119

Histologic Study of Non-Malignant Kidney Lesions in Port Harcourt, Nigeria

2015Afrischolar DiscoveryJournalOpen accessFirst author0 citations10.60787/tnhj.v13i4.115

International Journal of Women s Health1

How it can be read

86% free to read

Diamond 7 · 32%Free to read and to publish
Gold 3 · 14%In an open-access journal
Hybrid 1 · 5%Open in a subscription journal
Bronze 1 · 5%Free to read, no open licence
Green 7 · 32%A copy in a repository
Closed 3 · 14%Behind a paywall

Who funds it

6 of 22 papers name a funder

National Cancer Institute3
National Human Genome Research Institute3
Bundesministerium für Gesundheit2
Fogarty International Center2
Canadian Cancer Society Research Institute1
Canadian Institutes of Health Research1
Cure Brain Cancer Foundation1
National Center for Advancing Translational Sciences1

International Journal of Women s Health

201717 citationsOpen access · Gold

Comparability, diagnostic validity and completeness of Nigerian cancer registries

Cancer Epidemiology3

201517 citationsOpen access · Green