Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.


Having comitance.
Synonym(s): concomitant
See: comitant strabismus.


adjective Accompanying, accessory, joined with another.


adjective Accompanying, accessory, joined with another

Patient discussion about concomitant

Q. My wife(53) has elevated CEA and CA19.9 levels - near 150, without any concomitant reason/observation? Comment

A. Hi Bobby3,

The most important question is why were these tests done?
An elevated level may result from many causes, some of them are simple and some are more problematic. IMHO the best thing would be consulting her doctor to consider the need to check-up her alimentary system.
You can read more here ( and here (

More discussions about concomitant
References in periodicals archive ?
Complete response was slightly higher with concomitant chemoradiation arm.
Of these, 556 patients were offered concomitant surgical or nonsurgical SUI treatment: 21% chose concomitant surgery, 19% chose nonsurgical SUI treatment, and 60% of patients opted for no SUI treatment.
As expected, preoperative NYHA-4, smoking, poor EF, previous cardiac surgery, moderate or severe tricuspid regurgitation, and concomitant CABG were independent risk factors for short-term mortality.
Data regarding the frequency of concomitant sensitization to MMA and glutaraldehyde in the investigated groups is summarized in the Table 3.
support current North American guidelines, which suggest use of proton pump inhibitors or misoprostol for traditional NSAID users taking concomitant medications such as antithrombotics, corticosteroids, or SSRIs, and use of PPIs for low-dose-aspirin users taking antithrombotics or taking corticosteroids if these patients are 60 years old.
We report the case of a young patient with concomitant T- cell acute lymphoblastic leukaemia (T-ALL) and acute myeloid leukaemia (AML) with a novel cytogenetic abnormality.
The rate of multiple concomitant metastatic sites decreased with increasing age (p < 0.001) (Fig.
Regardless of the mechanism, clinical trial data has clearly demonstrated that concomitant use of MTX improves response to adalimumab.
pylori by concomitant therapy based on the abundance of clinical evidence already published to date.
The known risk factors include advanced age, concomitant nephrotoxic medicinal products, concomitant diuretic therapy or dehydration occurring after administration of zoledronic acid.