Background: Many a times during computed tomography scan of the head and neck, incidental density is noted in the paranasal sinuses in patients who are asymptomatic and there is need to document the degree of such opacification.
Objectives: To document the opacification and generate a numerical scoring system described as Lund Mackay Score which eases communication between the Radiologist and the referring Ear, Nose and Throat Surgeon in describing sinusitis.
Methods: This is a prospective study done in the Radiology Department of University of Benin Teaching Hospital, Benin, Edo, Nigeria. A total of 150 patients were enrolled for this study with 62% being male and 38% being females. They were patients who had cranial and neck computed tomography scans for pathologies other than that related to the sinuses.
Results: The mean age of the study population was 52.70±18.71years. Cerebro-vascular accident was the commonest indication for computed tomography scan in this study (49.3%). The total Lund Mackay Score was 0.803±2.90 for all sinuses being 0.417±1.47 for the right sinuses and 0.386±1.43 for the left sinuses. For the right, the maxillary sinus had the highest Lund Mackay Score with a value of 0.210±0.46 while the posterior ethmoidal sinus had the least Lund Mackay Score with a value of 0.027±0.16. For the left sinuses, the maxillary sinus also had the highest Lund Mackay Score value of 0.173±0.40.The posterior ethmoidal sinus also had least Lund Mackay Score value of 0.033±0.18. The Lund Mackay Score of the osteomeatal complex was 0.013±0.12 and 0.007±0.08 for the right and left respectively.
Conclusion: This study has documented the Lund Mackay score for incidental paranasal sinus
opacification as seen on computed tomography scan in our environment.

Background: Colorectal polyps are mucosal growths that occur in the large intestines. The adenomatous variants are precursors of colorectal cancer which is the third and fourth most common cancer among males and females respectively.
Objectives: This study documents the frequency, distribution and histopathological characteristic of colorectal polyps in our centre.
Method: This was a 10-year retrospective study of colorectal polyps diagnosed in the Pathology laboratory of a tertiary hospital from 2007 to 2016. Archived histopathology slides were reviewed to confirm the diagnosis. Relevant clinical information was obtained from patients' request forms. Data were presented as mean, standard deviation, frequencies and percentages. Relationships between neoplastic polyps and age, gender and anatomic site were measured using Fishers exact test.
Result: There were 124 cases of colorectal polyps recorded. Of these, were 82 (66.0%) males and 42 (34.0%) females (M:F=1.9:1). The average age at presentation was 29.0 ±23.6 years. Highest frequency of 45(36.2%) cases was in the 1st decade of life. There were 87(70.0%) cases in distal colon/rectum while 37(30.0%) were in the proximal colon. Juvenile polyps had the highest frequency overall, (60 cases, 48.0%), followed by tubular adenoma (31 cases, 25.0%), hyperplasic polyp (11 cases, 8.9%), villous adenoma (9 cases,7.3%), inflammatory polyp (6 cases,4.8%), tubulo-villous adenoma (3 cases, 2.4%), retention polyp (2 cases, 1.6%) and sessile serrated polyp (2 cases, 1.6%). There were 43 (34.7%) cases of neoplastic polyps. The average age of patients with neoplastic polyps was 47.3 years and they are located mostly in proximal colon (23/37 cases) (P<0.05).
Conclusion: Colorectal polyps are common in our environment especially juvenile polyp encountered mostly in children. We recorded significantly lower prevalence, lower mean age at presentation of neoplastic polyps compared to Western populations. This highlights the need for earlier age screening colonoscopy to detect and treat premalignant polyps.