A reverse form of Linburg–Comstock variation with comments on its etiology and demonstration of interactive 3D portable document format

Prasatkaew, Wijittra; Kruepunga, Nutmethee; Yurasakpong, Laphatrada; Korkong, Ratiyakorn; Ardsawang, Somkamon; Ronglakorn, Sirapatsorn; Sananpanich, Kanit; Suksri, Siwat; Suwannakhan, Athikhun

doi:10.1007/s00276-021-02858-8

Cited by 4 publications

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References 26 publications

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“…In the present study, the OPC-Radiomics dataset was explored and six anatomical variations in the head, neck and upper thorax, were investigated. Our findings are also presented three-dimensionally, which we believe will be standard in future anatomical studies [26]. Four skeletal variants were examined: the OA, EOs, CR and SBC.…”

Section: Discussionmentioning

confidence: 99%

Anatomical Variants Identified on Computed Tomography of Oropharyngeal Carcinoma Patients

et al. 2023

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Background and Objectives: Anatomical variations in the head, neck and chest are common, and are observed as occasional findings on computed tomography (CT). Although anatomical variations are mostly asymptomatic and do not cause any negative influence on the body function, they may jeopardize diagnosis and may be confused with pathological conditions. The presence of variations may also limit surgical access during tumor removal. The aim of this study was to investigate the prevalence of six anatomical variations—os acromiale, episternal ossicles, cervical rib, Stafne bone cavity, azygos lobe and tracheal bronchus—in an open-access computed tomography dataset obtained from oropharyngeal cancer patients. Materials and Methods: A total of 606 upper-chest and neck computed-tomography scans (79.4% male and 20.6% female) were retrospectively investigated. Sex difference was evaluated using the z-test for two proportions. Results: Os acromiale, episternal ossicles, cervical rib, Stafne bone cavity, azygos lobe, and tracheal bronchus were present in 3.1%, 2.2%, 0.2%, 0%, 0.3% and 0.5%, respectively, of all patients. Os acromiale was identified as meso-acromion in 86.6%, and as pre-acromion in 17.4%, of all acromia. Episternal ossicles were present unilaterally in 58.3%, and bilaterally in 41.7%, of all sterna. Only the cervical rib showed a sex difference in prevalence. Conclusions: awareness of these variations is important for radiologists interpreting head, neck and chest CTs; for example, those of oropharyngeal cancer patients. This study also illustrates the applicability of publicly available datasets in prevalence-based anatomical research. While most of the variations investigated in the present study are well-known, the episternal ossicles are not well explored, and need further investigation.

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Section: Discussionmentioning

confidence: 99%

Anatomical Variants Identified on Computed Tomography of Oropharyngeal Carcinoma Patients

et al. 2023

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An accessory muscle belly or an accessory muscle head? An unusual arrangement of muscles in the anterior compartment of the forearm

et al. 2023

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Purpose Knowledge of the unusual arrangement of the flexor pollicis longus (FPL) muscle is important as the variable tendon may be a rare cause of carpal tunnel syndrome. Methods During a routine dissection at the Department of Anatomy, an unusual formation of the FPL muscle was observed in a formalin embalmed Central European cadaver. Results This report presents a variation of the FPL muscle, where the muscle split and formed a separate accessory head inserting into the first lumbrical muscle. Moreover, a tendinous interconnection was present between the FPL muscle tendon and the tendon of the aberrant muscle head. Conclusion The cases described by previous literature, concerning the Linburg–Comstock variation or the accessory head of the first lumbrical muscle originating from the FPL muscle, are closest to the present case. Such variation has a clinical significance ranging from the functional limitation of the thumb and index finger movement to the potential median nerve compression.

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Topographical study of scapular foramina and scapular nutrient foramina in dried skeletons

et al. 2023

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A reverse form of Linburg–Comstock variation with comments on its etiology and demonstration of interactive 3D portable document format

Cited by 4 publications

References 26 publications

Anatomical Variants Identified on Computed Tomography of Oropharyngeal Carcinoma Patients

Anatomical Variants Identified on Computed Tomography of Oropharyngeal Carcinoma Patients

An accessory muscle belly or an accessory muscle head? An unusual arrangement of muscles in the anterior compartment of the forearm

Topographical study of scapular foramina and scapular nutrient foramina in dried skeletons

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