  The exterior derivative $d \theta$ of the Lee form $\theta$ of almost
Hermitian manifolds is studied. If $\omega$ is the K\"ahler two-form, it is
proved that the $\mathbb{R}\omega$-component of $d\theta$ is always zero.
expressions for the other components, in $[\lambda_0^{1,1}]$ and in $[[
\lambda^{2,0} ]]$, of $d\theta$ are also obtained. They are given in terms of
the intrinsic torsion. Likewise, it is described some interrelations between
the Lee form and $U(n)$-components of the Riemannian curvature tensor.
