Port-site metastasis of unsuspected gallbladder carcinoma with ossification after laparoscopic cholecystectomy: A case report.

BACKGROUND: Unsuspected gallbladder carcinoma (UGC) refers to cholecystectomy due to benign gallbladder disease, which is pathologically confirmed as gallbladder cancer during or after surgery. Port-site metastasis (PSM) of UGC following laparoscopic cholecystectomy is rare, especially after several years. CASE SUMMARY: A 55-year-old man presenting with acute cholecystitis and gallstones was treated by laparoscopic cholecystectomy in July 2008. Histological analysis revealed unexpected papillary adenocarcinoma of the gallbladder with gallstones, which indicated that the tumor had spread to the muscular space (pT1b). Radical resection of gallbladder carcinoma was performed 10 d later. In January 2018, the patient was admitted to our hospital for a mass in the upper abdominal wall after surgery for gallbladder cancer 10 years ago. Laparoscopic exploration and complete resection of the abdominal wall tumor were successfully performed. Pathological diagnosis showed metastatic or invasive, moderately differentiated adenocarcinoma in fibrous tissue with massive ossification. Immuno-histochemistry and medical history were consistent with invasion or metastasis of gallbladder carcinoma. His general condition was well at follow-up of 31 mo. No recurrence was found by ultrasound and epigastric enhanced computed tomography. CONCLUSION: PSM of gallbladder cancer is often accompanied by peritoneal metastasis, which indicates poor prognosis. Once PSM occurs after surgery, laparoscopic exploration is recommended to rule out abdominal metastasis to avoid unnecessary surgery.

Bis(µ-6-hydroxy-naphthalene-1-carboxyl-ato)bis-[(6-hydroxy-naphthalene-1-car-box-yl-ato)(1,10-phenanthroline)cadmium(II)] tetra-hydrate.

The title complex, [Cd(2)(C(11)H(7)O(3))(4)(C(12)H(8)N(2))(2)]·4H(2)O, has a centrosymmetric binuclear structure in which two Cd(II) atoms are both six-coordinated and bridged by 6-hydroxy-naphthalene-1-carboxyl-ate ligands, with a Cd⋯Cd separation of 3.671 (1) Å. The remaining coordination sites are occupied by two N atoms of a 1,10-phenanthroline ligand and two O atoms of a 6-hydroxy-naphthalene-1-carboxyl-ate ligand. The crystal packing is stabilized by O-H⋯O hydrogen-bonding inter-actions.

Diaqua-bis[5-(2-pyrid-yl)tetra-zolato-κN,N]iron(II).

The title complex, [Fe(C(6)H(4)N(5))(2)(H(2)O)(2)], was synthesized by the reaction of ferrous sulfate with 5-(2-pyrid-yl)-2H-tetra-zole (HL). The Fe(II) atom, located on a crystallographic center of inversion, is coordinated by four N-atom donors from two planar trans-related deprotonated L ligands and two O atoms from two axial water mol-ecules in a distorted octa-hedral geometry. The Fe(II) mononuclear units are further connected by inter-molecular O-H⋯N and C-H⋯O hydrogen-bonding inter-actions, forming a three-dimensional framework.

Poly[[diaqua-bis(µ(2)-4,4'-bipyridine)-manganese(II)] bis-[2-(2-carboxy-phenyl-di-sulfanyl)benzoate]].

The title complex, {[Mn(C(10)H(8)N(2))(2)(H(2)O)(2)](C(14)H(9)O(4)S(2))(2)}(n), contains an octa-hedrally coordinated Mn(II) cation and 2-(2-carboxy-phenyl-disulfan-yl)benzoate anions. The Mn(II) center is situated on a crystallographic center of inversion and is coordinated by four 4,4'-bipyridine (4,4'-bipy) ligands and two water mol-ecules. The 4,4'-bipy ligands act as bridging ligands, producing a fishing-net-like two-dimensional framework. In the crystal structure, this positively charged framework is charge balanced by 2-(2-carboxy-phenyl-disulfan-yl)benzoate anions that form a separate anionic two-dimensional framework via inter-molecular O-H⋯O hydrogen bonds and C-H⋯π stacking inter-actions. Additional inter-molecular O-H⋯O hydrogen bonds link the cationic and anionic frameworks to form the three-dimensional crystal structure.

catena-Poly[[dichloridomercury(II)]-micro-1-(2-pyridylmethyl)-1H-benzotriazole]: the effect of different metal centers on the self-assembly of coordination complexes.

To further investigate the relationship between the structures of benzotriazol-1-yl-based pyridyl ligands and their complexes, a new linear one-dimensional Hg(II) coordination polymer, [HgCl(2)(C(12)H(10)N(4))](n), with the 1-(2-pyridylmethyl)-1H-benzotriazole (L) ligand was obtained through the reaction of L with HgCl(2). In this complex, each Hg(II) center within the one-dimensional chain is coordinated by two chloride anions as well as by one pyridine and one benzotriazole N-atom donor of two distinct L ligands in a distorted tetrahedral geometry, forming a linear one-dimensional chain running along the [010] direction. Weak C-H...pi and pi-pi stacking interactions link the one-dimensional motifs to generate an overall two-dimensional network parallel to the (100) plane. Comparison of the structural differences with previous findings suggests that the presence of different metal centers may plays an important role in the construction of such supramolecular frameworks.

Bis{mu-3-[3-(2-pyridyl)pyrazol-1-ylmethyl]pyridine}disilver(I) bis(trifluoromethanesulfonate): effect of counter-anions on the self-assembly of coordination complexes.

As part of a study on the effect of different counter-anions on the self-assembly of coordination complexes, a new dinuclear Ag(I) complex, [Ag(2)(C(14)H(12)N(4))(2)](CF(3)SO(3))(2), with the 3-[3-(2-pyridyl)pyrazol-1-ylmethyl]pyridine (L) ligand was obtained through the reaction of L with AgCF(3)SO(3). In this complex, each Ag(I) center in the centrosymmetric dinuclear complex cation is coordinated by two pyridine and one pyrazole N-atom donor of two inversion-related L ligands in a trigonal planar geometry. This forms a unique box-like cyclic dimer with an intramolecular nonbonding Ag...Ag separation of 6.379 (7) A. Weak Ag...CF(3)SO(3) and C-H...X (X = O and F) hydrogen-bonding interactions, together with pi-pi stacking interactions, link the complex cations along the [001] and [1\overline{1}0] directions, respectively, generating two different one-dimensional chains and then an overall two-dimensional network of the complex running parallel to the (110) plane. Comparison of the structural differences with previous findings suggests that the presence of different counter-anions plays an important role in the construction of such supramolecular frameworks.

Tetrakis(mu-anthracene-9-carboxylato)-kappa4O:O';kappa3O,O':O';kappa3O:O,O'-bis[(anthracene-9-carboxylato-kappa2O,O')(1,10-phenanthroline-kappa2N,N')erbium(III)]: effects of a noncoordinating anthracene ligand ring system on the final structure of a coordination complex.

The title complex, [Er(2)(C(15)H(9)O(2))(6)(C(12)H(8)N(2))(2)], has a centrosymmetric binuclear cage structure in which the two Er(III) atoms are both nine-coordinated and are bridged by four bulky anthracene-9-carboxylate (L) ligands, with a nonbonding Er...Er separation of 3.9041 (2) A. The L groups coordinate each Er(III) atom in three different ways. The results reported here reveal that the bulky anthracene skeleton of the L ligand plays an important role in the formation of the complex by virtue of intra- and intermolecular pi-pi stacking and C-H...pi interactions.

Bis[µ-2-(3-pyridylmeth-yl)-2H-benzo-triazole]bis-[nitratosilver(I)].

In the title centrosymmetric binuclear Ag(I) complex, [Ag(2)(NO(3))(2)(C(12)H(10)N(4))(2)], each Ag(I) center is coordinated by one pyridine and one benzotriazole N-donor atom of two inversion-related 2-(3-pyridylmeth-yl)-2H-benzotriazole (L) ligands, and an O atom of a coordinated NO(3) (-) anion in a distorted T-shaped geometry. This forms a unique box-like cyclic dimer with an intra-molecular non-bonding Ag⋯Ag separation of 6.327 (2) Å. Weak inter-molecular Ag⋯O(nitrate) inter-actions [2.728 (4) and 2.646 (3) Å] link the binuclear units, forming a two-dimensional network parallel to (100). Inter-molecular C-H⋯O hydrogen-bonding inter-actions, involving the L ligands and the coordinated NO(3) (-) anions, link the sheets, forming a three-dimensional framework.

Dichlorido[1-(1-naphthyl-meth-yl)-3-(2-pyrid-yl)-1H-pyrazole-κN,N]palladium(II).

In the title compound, [PdCl(2)(C(19)H(15)N(3))], the Pd(II) centre is four-coordinated by two N-atom donors from one 1-[3-(2-pyrid-yl)pyrazol-1-ylmeth-yl]naphthalene (L) ligand and by two Cl atoms in a distorted square-planar coordination geometry. In the crystal structure, adjacent Pd(II) mononuclear units form inter-molecular C-H⋯π inter-actions involving the benzene and pyridine rings of different L ligands and π-π stacking inter-actions between the pyrazolyl-pyridine and naphthalene rings of neighbouring L ligands, with a centroid-centroid separation of 3.522 (1) Å.